2024-03-29T08:07:13Z
http://journal.ipb.ac.id/index.php/jurnalikt/oai
oai:ojs.journal.ipb.ac.id:article/7555
2020-07-06T08:17:40Z
jurnalikt:ART
nmb a2200000Iu 4500
"131231 2013 eng "
2620-309X
2087-9423
dc
TEMPERATURE VARIABILITY AT SENUNU BAY, WEST SUMBAWA
Hidayat, Syamsul
Purba, Mulia
Waworuntu, Jorina
The purposes of this study were to determine the variability of temperature and its relation to regional processes in the Senunu Bay. The result showed clear vertical stratifications i.e., mixed layer thickness about 39-119 m with isotherm of 27°C, thermocline layer thickness about 83-204 m with isotherm of 14–26°C, and the deeper layer from the thermocline lower limit to the sea bottom with isotherm <13°C. Temperature and the thickness of each layers varied with season in which during the Northwest Monsoon the temperature was warmer and the mixed layer was thicker than those during Southeast Monsoon. During Southeast Monsoon, the thermocline layer rose about 24 m. The 2001, 2006, and 2009 (weak La Nina years), the Indonesia Throughflow (ITF) carried warmer water, deepening thermocline depth and reducing upwelling strength. In 2003 and 2008 thickening of mixed layer occurred in transition season was believed associated with the arrival of Kelvin Wave from the west. In 2002 and 2004 (weak El Nino period,) ITF carries colder water shallowing thermocline depth and enhancing upwelling strength. In 2007 was believed to be related with positive IODM where the sea surface temperature were decreasing due to intensification of southeast wind which induced strong upwelling. The temperature spectral density of mixed layer and thermocline was influenced by annual, semi-annual, intra-annual and inter-annual period fluctuations. The cross-correlation between wind and temperature showed significant value in the annual period.
Keywords: temperature, thermocline, variability, ENSO, IODM.
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
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http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7555
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 2 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7556
2020-07-06T08:17:40Z
jurnalikt:ART
nmb a2200000Iu 4500
"131231 2013 eng "
2620-309X
2087-9423
dc
SEASONAL SURFACE GEOSTROPHIC CURRENT IN ARAFURA-TIMOR WATERS
Ramadyan, Fachry
Radjawane, Ivonne M.
Research on the seasonal geostrophic surface current during 2002-2011 in Arafura-Timor waters was conducted using satellite altimetry data. Those data were absolute dynamic topography and absolute geostrophic velocity data taken from Archiving Validation and Interpretation of Satellite Oceanographic data (AVISO). The dynamics of geostrophic surface current varied in every monsoon due to the difference in absolute dynamic topography. During northwest (NW) season, the absolut dynamic topography in Arafura Sea was higher than in Timor Sea by an average difference of 0.1–0.2 m and the geostrophic surface current moved from Arafura Sea toward Timor Sea. During southeast (SE) season, the absolute dynamic topography in Arafura Sea lower than Timor Sea with an average difference of 0.03-0.04 m. In this season, upwelling occurs in Banda Sea and sea surface water in this region becomes lower and the current moved from Arafura Sea to Banda Sea. The absolut dynamic topography difference between Arafura Sea and Timor Sea in NW and SE monsoons was 0.05–0.06 m and so the geostrophic surface current moved from Arafura Sea toward Timor Sea. In Timor Sea, the current moved southwest towards the Indian Ocean. In NW and SE Monsoons the the velocity of surface geostrophic current in Timor Sea (0,3 m/sec) was higher compare in Arafura Sea (0.2 m/sec) due to the configuration of island surround the Timor Sea and its topography.
Keywords: Geostrophic surface current, altimetrysatellite, Arafura-Timor Sea
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7556
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 2 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7557
2020-07-06T08:17:40Z
jurnalikt:ART
nmb a2200000Iu 4500
"131231 2013 eng "
2620-309X
2087-9423
dc
THE CONDITION AND DISTRIBUTION OF STONY CORALS (Scleractinia corals) IN BANGKA WATER
Siringoringo, Rikoh Manogar
Hadi, Tri Aryono
Bangka water is well known as the best tin producer in which there are many off-shore tin-mining activities conducted by both local people and tin companies. Such condition apparently brings negative impacts to marine life. Stony corals are considered as the major component of coral reef ecosystems whose condition is influenced by environmental condition. The aim of this study is to observe the general condition of coral reefs and the distribution of stony corals in Bangka Water. The study was carried out between September and November 2010 by taking 10 stations. The method used was LIT as long as 70 meters installed parallel to the coast line. The result indicates that generally the condition of coral reef was categorized as fair condition, the coral cover averaging at 47, 82 %. There were 89 species of stony corals found, divided into 13 genera. The most dominant species was Porites lutea , particularly at Station 6 by 33,3%. The prolonged turbidity mainly caused by tin-mining activities is thought to lead the coral reefs to critical condition particularly in some areas.
Keywords: stony corals, coral cover, distribution, Bangka Water.
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7557
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 2 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7558
2020-07-06T08:17:40Z
jurnalikt:ART
nmb a2200000Iu 4500
"131201 2013 eng "
2620-309X
2087-9423
dc
CHEMICAL COMPOSITION AND ANTIOXIDANT ACTIVITY OF TROPICAL BROWN ALGAE Padina australis FROM PRAMUKA ISLAND, DISTRICT OF SERIBU ISLAND, INDONESIA
Santoso, Joko
Podungge, Fitriany
Sumaryanto, Heru
The proximate composition, dietary fiber, and total phenol contents as well as antioxidant activity of tropical brown alga Padina australis collected from the Pramuka Island, District of Seribu Island, Indonesia during the rainy season of 2011 were determined in order to evaluate their potential nutritional value and activity of natural antioxidant compound. The content of ash, protein, and fat were 22.26, 10.76, and 4.17 g/100 g dry matter, respectively; whereas the amounts of soluble, insoluble, and total dietary fibers were 8.4, 5.4, and 13.8 g/100 g, respectively. Methanol extract of P. australis contained the highest total phenol of 246.1 mg GAE/1000 g dry sample. The extract also had the highest activity on DPPH radical scavenging, measured by IC50 of 267.1 ppm. Both the total phenol and IC50 value extracts decreased in the following order: methanol > ethyl acetate > n-hexane.
Keywords: antioxidant, dietary fiber, DPPH-scavenging, Padina australis, proximate composition
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7558
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 2 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7559
2020-07-06T08:17:40Z
jurnalikt:ART
nmb a2200000Iu 4500
"131231 2013 eng "
2620-309X
2087-9423
dc
CHARACTERIZATION OF FUNCTIONAL PROPERTIES FISH PROTEIN CONCENTRATE OF SKIPJACK ROE (Katsuwonus pelamis)
Rieuwpassa, Frets Jonas
Santoso, Joko
Santoso, Joko
Trilaksani, Wini
Trilaksani, Wini
By product that rich in protein such as fish roes are potential as raw material for protein concentrate. This research aimed to utilize skipjack roes to produce protein concentrate and to characterize its functional properties. The method used to extract protein was defatting method using isopropyl alcohol and ethanol with extraction times of 1, 2, and 3 hours. The results showed that skipjack roes contained 19.81% of protein, 3.41% of fat, 71.32% of moisture, 2.04% of ash, and 1.53% of carbohydrate (by difference). Defatting method using isopropyl alcohol for 3 hours produced the best roe protein concentrate (RPC). The product meets to the quality requirements of fish protein concentrate type B, contained protein and fat of 71.79% and 2.78%, respectively. This product also had functional properties as follows: water absorption capacity (1.57 ml/g), oil absorption capacity (1.82 g/g), emulsion capacity (81.65%), bulk density (0.51 g/ml), foaming capacity (1.90 ml), foaming stability (0.22 ml) and protein digestibility (95.86%). Lysine and leucine became the major essential amino acid of RPC, with values were 70.76 and 64.91 mg/g protein, respectively. The composition of amino acids of RPC skipjack consisted of 8 essentials amino acids, 5 non-essentials amino acids and 2 semi-essentials amino acids.
Keywords: extraction, fish roe skipjack, roe protein concentrate
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7559
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 2 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7560
2020-07-06T08:17:40Z
jurnalikt:ART
nmb a2200000Iu 4500
"131231 2013 eng "
2620-309X
2087-9423
dc
NUTRIENT DIGESTIBILITY FEED WITH DIFFERENT LEVELS OF PROTEIN AND LIPID ON CORAL ROCK GROUPER (Epinephelus corallicola) JUVENILE
Marzuqi, Muhammad
Anjusary, Dewi Nasbha
The aims of this study was to determine the nutrient digestibility coefficient of diet with diertary levels of protein and lipid on coral rock grouper (Epinephelus corallicola) juvenile. This study used completely randomized design with factorial arranged in 3 different treatment of dietary protein levels i.e., 36%, 42%, and 48%;and 2 different treatment of dietary lipid levels i.e., 9% and 18%; with 3 repetition. The average initial body weight of fishes for this study was 29.19 ± 0.97 g/fish. Fishes were reared in 18 pieces of polycarbonate tank with water volume of 30 liters with stocked density of 7 fishes/tank. The tank equipped with aeration with water flow change of 20 liters/hour. Fish were fed 2 times per day on at satiation and fish rearing for 150 days. Parameters measured were protein, lipid, carbohydrate and energy of digestibility coefficient . The results showed that the interaction of protein and lipid levels that differ in feed ratio significantly affected on protein, lipid, carbohydrate, and energy digestibility coefficients. In general, feed with a protein content of 36% and 9% lipid produced good nutrient digestibility coefficient and better economic value.
Keywords: protein, lipid, feed nutrient digestibility, coral rock grouper
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7560
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 2 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7561
2020-07-06T08:17:40Z
jurnalikt:ART
nmb a2200000Iu 4500
"131231 2013 eng "
2620-309X
2087-9423
dc
IMPLANTATION OF LHRH-a HORMONE TO STIMULATION OF GONAD DEVELOPMENT OF HUMPBACK GROUPER SECOND GENERATION ( F-2 )
Tridjoko, Tridjoko
This study aimed to determine the effect of LHRH-a hormone implantation on gonadal development of humpback grouper, Cromileptes altivelis 2nd generation (F-2). Individuals used were 20 female grouper fish with weight range of 600-800 gram/fish and total length range of 28.0-30.0 cm. The treatment used 5 fish each with tagging. Grouper fishes were stocked into the 75 m3 circular concrete tank. Hormone of LHRH-a with dosage of 50 μg/kg body weight was used as implant treatment of (A) 1 time,, (B) 2 times, (C) 3 times, and (D) without implant. The results showed that implantation of LHRH-a hormone were significantly stimulate gonad development of humpback grouper second generation (F-2). Treatment of 3 times implant every month showed the best results produced oocyte diameter up to 480 μm, while the control of oocyte diameter only reached <400 μm.
Keywords: LHRH-a hormone, implantation, Humpback grouper, gonad development
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7561
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 2 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7562
2020-07-06T08:17:40Z
jurnalikt:ART
nmb a2200000Iu 4500
"131231 2013 eng "
2620-309X
2087-9423
dc
IMPROVEMENT OF SEED PRODUCTION AND QUALITY GROUPER BY HYBRIDIZATION PROGRAM
Ismi, Suko
Asih, Yasmina Nirmala
Kusumawati, Daniar
Several types of grouper hybrid seeds can now be massively produced in a hatchery. Hybrid seeds can increase diversification of aquaculture species and potential to increase fish production. Therefore, an improvement in hybrid seed production both in high quantity and quality is very important. This research was conducted to produce massively cantik grouper hybrid seeds i.e.,a crossbreed between female tiger grouper (Epinephelus fuscoguttatus) and male marbled grouper (Epinephelus microdon). This research examined the cantik grouper seed production compared with the production of tiger grouper and marbled grouper fingerlings. The research results showed that cantik hybrid grouper seeds production had higher survival rate (24.59%) than tiger grouper (17.44%) and marbled grouper (4.63%). The total length of the seed at the age of 45 days for cantik grouper was 3.59 ± 0.21 cm, tiger 3.24 ± 0.55 cm, and batik 2.61 ± 0.42 cm, respectively. Seed abnormality for cantik grouper was 4.13%, tiger grouper 30.21%, and marled tiger 0.57%, respectively. Based on genetic variation analyses, the cantik grouper had a closer genetic relationship with the marbled grouper compared with the tiger grouper.
Keywords: Marbled grouper, hybridization program, seeds production, quality
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7562
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 2 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7563
2020-07-06T08:17:40Z
jurnalikt:ART
nmb a2200000Iu 4500
"131231 2013 eng "
2620-309X
2087-9423
dc
HEREDITY OF BAND PATTERN IN CLOWN FISH, Amphiprion percula
Sembiring, Sari B.M.
Setiawati, K.M.
Hutapea, J.H.
Subamia, W.
One of marine ornamental fishes which was succeeded on its breeding, from eggs production to larval and juvenile rearing at Institute for Mariculture Research and Development, Gondol was Clown fish, Amphiprion percula. In local name, the fish also known as Biak Clown fish. In culture development, the fish frequently faced the problem on color pattern which was not meet with export demand. The fish should be bright orange and thin black stripe pattern. In this experiment, analysis was conducted to understand the juvenile color variation produced from 3 pairs broodstock. Larvae and juvenile were reared in the indoor hatchery for 2-3 months,then reared at outdoor tanks for other 3-4 months. Amplification of broodstock and juvenile genoms using specific primer for pigment sequens. Parameters observed on juvenile were classified into three color pattern classes i.e., class I (thick black stripe and disperse), class II(thick black stripe), and class III (thin black stripe). Numbers of juvenile analyzed from its pair broodstock and each class were 2-3 fishes. Color perform similarity coefficient was analyzed molecularly using sequencing. Sequencing process followed: DNA isolation, amplification using gen Tyr primer, purification PCR product and finally DNA sequencing. Sequencing analyses of PCR product, after alignment showed that similarity coefficient of color pattern of class I, II, and III between broodstock and juvenile was only 50 %, and phenotipically, color pattern appeared on juvenile were different than its broodstock. The changes of color perform on Clown fish also affected by interaction between genotype and environment and feed pigment concentration.
Keywords: heredity, color pattern, Tyr gene, clown fish, A. percula
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7563
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 2 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7564
2020-07-06T08:17:40Z
jurnalikt:ART
nmb a2200000Iu 4500
"131231 2013 eng "
2620-309X
2087-9423
dc
CHARACTERIZATION OF CRUDE EXTRACT POLYPHENOLOXIDASE ENZYME FROM BLACK TIGER SHRIMP (Penaeus monodon)
Suhandana, Made
Nurhayati, Tati
Ambarsari, Laksmi
Shrimp is a very important export commodity with high market value world wide. However, it is still facing problem related to the waste and deterioration quality as main issues for the shrimp industry. In this experiment, polyphenoloxidase from the carapace of Penaeus monodon was extracted and characterized. The research was carried out to obtain the optimum extraction condition and to evaluate the properties of enzyme i.e., pH, optimum temperature for activating enzyme, kinetic enzyme, and chelating on metal ion. The best method for PPO enzyme extraction used buffer with 1:3 proportion. The optimum activity of enzyme was at pH 7 and temperature of 35°C. The kinematic enzyme (Km) value and the maximum substrate concentration were 5.42 mM and 7.5 mM, respectively. Na+, Ca2+, Zn2+, and EDTA with concentration 5 and 10 mM inhibited enzyme activity. Cu2+at concentration of 10 mM and Mn2+ at concentration 5 mM also inhibited enzyme activity
Keywords: carapace, characterization, polyphenoloxidase, shrimp
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7564
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 2 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7565
2020-07-06T08:17:40Z
jurnalikt:ART
nmb a2200000Iu 4500
"131231 2013 eng "
2620-309X
2087-9423
dc
WATER MASSCHARACTERISTICS OFWEDA BAY,HALMAHERA ISLAND, NORTH MALUKU
Basit, Abdul
Putri, M.R.
The water quality parameters at 23 observation points in Weda Bay were collected using the Sea-Bird's Conductivity Temperature and Depth (CTD) 911 and Dissolved Oxygen (DO) meter ARO-USB 66 during Weda Expedition in 13 – 23 March 2013 (transition monsoon) with research vessel Baruna Jaya VII. The main goal of this research was to identify characteristics of water masses in Weda Bay. The results showed that the thickness of mixed layer in Weda Bay was about 40 m with the average levels of temperature, salinity, and oxygen at about 29.2 °C, 34.0, and 7.0 mg/L, respectively. Within thermocline layers, it was observed that there was the water type of Southern Subtropical Lower Water (SSLW) identified by the presence of salinity maximum above 35.0 occupied between 25.7 and 24.5 sigma-theta (16,2 °C < < 20,5 °C). Furthermore, there were oxygen homogenous layers at 5.1 mg/L situated at between 26 and 24.7 sigma-theta (15°C < < 20°C). In addition, oxygen inversion was found at 0.15 mg/L in the layer of between 26.8 and 26.0 sigma-theta (10°C < < 15°C). In the intermediate layer (>500 m), the temperature and salinity tended to be constant at 7.8 °C and 34.7, controlled by the sill separating Halmahera sea and Western North Pacific Ocean (WNPO). These water mass characteristics revealed the strong influences from WNPO to Weda Bay. The water, driven by Indonesian throughflow (ITF), flowed into Halmahera Sea before turned into Weda Bay.
Keywords: temperature, salinity, oxygen, SSLW, Weda bay
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7565
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 2 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7566
2020-07-06T08:17:40Z
jurnalikt:ART
nmb a2200000Iu 4500
"131231 2013 eng "
2620-309X
2087-9423
dc
THE COMPOSITION OF SPESIES AND CHANGES IN REEF FISHES COMMUNITY AT ECOREEF REHABILITATION SITE, MANADO TUA ISLAND, BUNAKEN NATIONAL PARK
Setiawan, Fakhrizal
Razak, Tries B.
Idris, Idris
Estradivari, Estradivari
The study conducted from 2006 to 2012 with an interval of every two years in the ecoreef area of Manado Tua island found 2,936 individual reef fishes of 181 species that include into 32 families. Species composition value of the 10 dominant species of reef fishes was 55.48% of the total species. The highest number of species was Plotosus lineatus with schooling behavior which only discovered in 2010 at a depth of 3 meters. Ecoreef area of Manado Tua island, when analyzed from the abundance and biomass of reef fishes exhibited a succession of reef fish that have been stable, with peak abundance and higher biomass in 2008 and 2010. Reef fish found in ecoreef seemed to start a new living and become a new habitat for them. These were indicated by the highest biomass during the previous year but the number of individuals and spesies were decline. There was no change in the structure of reef fish communities in the ecoreef area of Manado Tua Island, which characterized by non significant different ecological index between the years. Cluster analyses grouped reef fish species into 2 groups i.e., the group of 2006 and the group of 2008, 2010, and 2012. Early survey in 2006 showed lower abundance of reef fish species for allegedly associated with low ecoreef organisms.
Keywords: ecoreef, spesies composition, community structure, reef fish.
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7566
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 2 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7567
2020-07-06T08:54:43Z
jurnalikt:ART
nmb a2200000Iu 4500
"131231 2013 eng "
2620-309X
2087-9423
dc
FLUORESCENT LAMP LIGHT INTENSITY ON THE EMBRYOGENESIS DEVELOPMENT AND THE SURVIVAL OF PEARL OYSTER (Pinctada maxima) LARVAE
Hamzah, Mat Sardi
One of the important factors in determining the success of pearl oyster (Pinctada maxima) culture is the quality and quantity of larvae produced in brood stock spawning process in the laboratory. Problems were often found in larval rearing and larvae attachment to the substrate that were low in quality and little number of larvae. The study purposes were observe the embryogenesis development and the survival rate of pearl oyster larvae under different fluorescent lamp light intensities. The study was conducted in August 1nd – 30th, 2011 in Sambelia Bumi Gemilang Hamparan Mutiara laboratory, East Lombok. Results revealed that different in light intensities effected the survivorship of the pearl oyster larvae significantly (p<0.01). Honest Significant Difference (HSD) test indicated that the highest survival rate occurred in dark condition (dark treatment) of 38%, followed by intensity of 10 watts (34.67%), 5 watts (30.67%) and 15 watts (4.66%) resfectively
Keywords: embryogenesis development, survivorship, pearl oyster (Pinctada maxima) larvae, fluorescent lamp light intensity
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7567
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 2 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7568
2020-07-06T08:54:43Z
jurnalikt:ART
nmb a2200000Iu 4500
"131231 2013 eng "
2620-309X
2087-9423
dc
GROWTH AND SURVIVAL RATE OF GOLDEN TREVALLY, Gnathannodon Speciosus Forsskal WITH DIFFERENT LENGTH SIZE
Alit, Anak Agung
Golden travelly is a type of fish that can live on the surface, belongs to Carangidae family, for a length of 5-8 cm can function as marine ornamental fish with the name of yellow crime or yellow samba, and can be used for consumption. The study was conducted to determine the effect of length on the initial stocking of fish seed to the growth and survival rate of golden travelly. Fish samples were cultured fish golden travelly of 45 days old hatchery and stocked with density of 300 pc/tank in 9 tanks with volume of 1 m³ feber/tanks. Golden travelly were fed with commercial fish by feeding frequency of 3 times/day untill satiation. The tested treatments were based on initial different lengths i.e., treatment A (1.5 to 2.0 cm/pc), B (2.5 to 3.0 cm/pc), and C (3.5 to 4,0 cm/pc). Feeding was based on 10-15 % of body weight. Measured variables were body length growth, survival rate, and quality of water. Growth and survival rate were analysed using analyses of variance (ANOVA). The results showed that the growth rate of fish golden travelly Gnathannodon speciosus Forsskal was best at treatment B (2.5 to 3.0 cm/pc) with 7% per day and 92% survival rate.
Keywords: fish seed golden trevally, tanks , growth, and survival.
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7568
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 2 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7569
2020-07-06T08:54:43Z
jurnalikt:ART
nmb a2200000Iu 4500
"131231 2013 eng "
2620-309X
2087-9423
dc
ZONATION AND DENSITY OF INTERTIDAL COMMUNITIES AT COASTAL AREA OF BATU HIJAU, SUMBAWA
Yulianda, Fredinan
Yusuf, Muhamad Salamuddin
Prayogo, Windy
Characteristics of coastal tidal areas of Batu Hijau vary from sandy substrate type, sandy to rocky reef with a wide expanse of intertidal ranges from 100 meters to 350 meters. To find out zoning intertidal community,the observation conducted at five locations intertidal beach, each consisting of three zones: the high tide, middle tide and low tide. Living structure in tidal areas of coastal Batu Hijau, Sumbawa consists of the main communities and associated biota. The main intertidal community composed of coral, seagrass, algae, and other fauna, while the intertidal biota associated with tidal habitat consists of a group of molluscs, echinoderm, crustacean, worms and fish. Distribution of intertidal communities formed three zones consisting of (1) seagrass (21.3%) in the upper zone (high tide), (2) algae (35.5%) in the central zone (mid tide), and (3) coral (28.5%) and algae (42.5%) in the lower zone (low tide). The main groups of biota in the form of tidal zoning system consisting of two groups of molluscs (51.12%) in the upper zone, while the echinoderms that predominate in the central zone (36.96%) and lower (66.89%). No significant differences between the structure and composition of marine intertidal communities in September 2011 (rainy season) and April 2012 (dry season).
Keywords: intertidal (tidal), percent cover, density, community, biota
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
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http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7569
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 2 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7570
2020-07-06T08:54:42Z
jurnalikt:ART
nmb a2200000Iu 4500
"140402 2014 eng "
2620-309X
2087-9423
dc
COASTLINE CHANGES AT BUNGUS BAY PADANG CITY, WEST SUMATERA PROVINCE BASED ON SATELLITE IMAGERY ANALYSES
Yulius, Yulius
Ramdhan, M.
Ramdhan, M.
The Bungus Bay with 21,050 meters of coastline length and 1,383.86 ha of surface area confines with a rounded shape surface. This study aimed to determine coastline changes in the Bungus Bay based on overlay analyses of satellite imagery of 2000, 2006, 2010, and 2011. The method used in this research was visual interpretation using four key interpretation such as hue image, texture association, and shape. The results showed that in general there were abrasion processes in the Bungus Bay. The abrasion processes were more dominant in the Buo Bay, Kaluang Bay, and Kabuang Bay. The largest coastline changes occurred in the northern Bungus Bay for 26 m/yr, while in the Kaluang Bay and Kabuang Bay exhibited a moderate change of 9 m/yr. In general, the rate of coastline change in the Bungus Bay was 5.9 m/yr.
Keywords: abration, accretion, coastline changes, Bungus Bay
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
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http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7570
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 2 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7571
2020-07-06T08:54:42Z
jurnalikt:ART
nmb a2200000Iu 4500
"131231 2013 eng "
2620-309X
2087-9423
dc
VARIABILITY AND SPATIAL DISTRIBUTION OF TOTAL SCATTERING COEFFICIENTS OF SURFACE WATER IN VARIOUS SEASONS
Untung, Murjat Hi
Nababan, Bisman
Siregar, Vincentus P.
Variability and spatial distribution data of the total scattering coefficients ares useful in the development of bio-optical algorithms of ocean color satellite. The purpose of this study was to determine the variability and spatial distribution of the total scattering coefficient at 9 wavelengths (λ) in different seasons. Field data collection were conducted in the Northeastern Gulf of Mexico (NEGOM) of the spring , summer, and fall in 1999-2000 by using the ac-9 in-situ Spectrophotometer and restricted to coastal waters of 10 m isobath and offshore of 1000 m isobath. The data were filtered using the moving average method and tested with the Kruskal-Wallis. The results showed that the average value of the total scattering coefficients were significantly different among spring, summer, and fall. In general, the total scattering coefficients were relatively high, especially in the coastal waters near the mouth of the river each season and relatively low in offshore waters except during the summer that the total scattering coefficients were also relatively high in offshore watersdue to the intrusion of the Mississippi river flow toward offshore containing high nutrients that can promote the growth of phytoplankton in the offshore, suspended material and lower salinity jointly to increase the total scattering coefficients.
Keywords: variability, spatial distribution, total scattering coefficient, bio-optic, NEGOM.
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
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http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7571
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 2 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7572
2020-07-06T08:54:42Z
jurnalikt:ART
nmb a2200000Iu 4500
"140402 2014 eng "
2620-309X
2087-9423
dc
ACOUSTIC DETECTION AND CHARACTERIZATION OF MARINE SEDIMENT WITH SHALLOW SEISMIC TECHNOLOGY IN RAMBAT WATERS, BANGKA BELITUNG
Ramdhani, Haqqu
Manik, Henry M.
Susilohadi, Susilohadi
High resolution of marine seismic reflection seismic were used to detect the layers of seafloor sediment and to interpret the seismic data geologically. The objectives of this study weres to detect and to characterize the seafloor sediment in the Rambat area, West Bangka, Bangka Belitung. Acquisition data was held on 10-24 August 2012 located between 105.1°00'00" - 105.5°00'00 " N and 1.7°00'00"-1.9° 00'00" W. Several methods used to process the data were geometry processing, band pass filter, predictive deconvolution, and Autocoralation Gain Control (AGC) in order to reduce the multiple noise and to ease the data interpretation. Seismic cross section found in Cross Rambat (CRMBT) line 11 exhibited sedimentation process of the sea floor which rocky substrates. The process was assumed to be occurred due to legal and illegal mining activities for long period of time.
Keywords: seismic, acoustic, sediment, band pass filter, deconvolution, noise
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
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http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7572
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 2 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7573
2020-07-06T08:54:42Z
jurnalikt:ART
nmb a2200000Iu 4500
"131231 2013 eng "
2620-309X
2087-9423
dc
SHALLOW WATER HABITAT MAPPING AND REEF FISH STOCK ESTIMATION USING HIGH RESOLUTION SATELLITE DATA
Siregar, Vincentius P.
Wouthuyzen, Sam
Sunuddin, Andriani
Anggoro, Ari
Mustika, Ade Ayu
Shallow marine waters comprise diverse benthic types forming habitats for reef fish community, which important for the livelihood of coastal and small island inhabitants. Satellite imagery provide synoptic map of benthic habitat and further utilized to estimate reef fish stock. The objective of this research was to estimate reef fish stock in complex coral reef of Pulau Pari, by utilizing high resolution satellite imagery of the WorldView-2 in combination with field data such as visual census of reef fish. Field survey was conducted between May-August 2013 with 160 sampling points representing four sites (north, south, west, and east). The image was analy-zed and grouped into five classes of benthic habitats i.e., live coral (LC), dead coral (DC), sand (Sa), seagrass (Sg), and mix (Mx) (combination seagrass+coral and seagrass+sand). The overall accuracy of benthic habitat map was 78%. Field survey revealed that the highest live coral cover (58%) was found at the north site with fish density 3.69 and 1.50 ind/m2at 3 and 10 m depth, respectively. Meanwhile, the lowest live coral cover (18%) was found at the south site with fish density 2.79 and 2.18 ind/m2 at 3 and 10 m depth, respectively. Interpolation on fish density data in each habitat class resulted in standing stock reef fish estimation: LC (5,340,698 ind), DC (56,254,356 ind), Sa (13,370,154 ind), Sg (1,776,195 ind) and Mx (14,557,680 ind).
Keywords: mapping, satellite imagery, benthic habitat, reef fish, stock estimation
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
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http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7573
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 2 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7574
2020-07-06T08:54:42Z
jurnalikt:ART
nmb a2200000Iu 4500
"131231 2013 eng "
2620-309X
2087-9423
dc
MACROALGAE BIOMASS PRODUCTIVITY IN AMBALAU ISLAND WATERS, SOUTH BURU DISTRICT
Papalia, Saleh
Arfah, Hairati
Studies on the diversity and density of macroalga have been carried out in Ambalau island waters, south Buru district since 2010. The purposes of this study were to determine the diversity, density, frequency, and the dominance of macroalga in the coastal waters of the Ambalau island. Data collection with squares transect line method were conducted in October-November 2009. The results showed that the coastal areas of Masawoy showed the highest values in diversity, density, frequency, and the dominance of macroalga in the study area with 33 species from 20 genera consisting of 14 species of green alga, 10 species of red alga, and 9 species of brown alga. Caulerpa, Halimeda, Gracilaria, Acanthophora, Sargassum, and Padina were the most dominance in the region. The highest diversity, density, frequency, and dominance of macroalga on the Masawoy coastal waters were due to its habitat conditions in relatively good condition consisting of dead coral rubble, sand, coral live with seagrass vegetation dominated by Thalasia hemprizii and Enhalus acuroides. Meanwhile, habitat conditions at other locations have suffered a severe damage and dominated by dead coral. Environmental conditions in the study region were within the limits of decent support for the growth of macro alga.
Keywords: macroalga, biodiversity, density, frequency, dominance, Ambalau
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
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http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7574
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 2 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7741
2020-07-06T08:17:42Z
jurnalikt:ART
nmb a2200000Iu 4500
"130701 2013 eng "
2620-309X
2087-9423
dc
THE COMPOSITION AND DISTRIBUTION OF BENTHIC FORAMINIFERA AT CORAL REEF ECOSYSTEM IN THOUSANDS ISLAND
Toruan, Lumban Nauli Lumban
Soedharma, Dedi
Dewi, Kresna Tri
Composition and distribution of foraminifers are affected by human activities and have close association with coral reef ecosystem. The aims of this research were to investigate the benthic foraminifers’ composition and distribution in sediment of coral reef ecosystem. Eleven stations of Karang Bongkok, Pramuka, and Onrust Island were observed in this study. The sediments were taken from surface substrate up to 2 cm under the substrate. Samples were washed on sieve with mesh size 0,063 mm, and then dried in oven with 50°C of temperature for two hours. After separating from the sediment, the foraminifers were laid on foraminiferal slide and indentified using binocular microscope. The highest composition of symbiont-bearing foraminiferal assemblages which associated with reef ecosystem was in East Pramuka (78.17%) and the lowest was in South Onrust (21,83%). The opportunistic type had the highest composition in South Onrust (38.67%) and the lowest was in South Karang Bongkok. In west Pramuka had the highest composition of heterotrophic type (57.17%) and the lowest was in North Onrust (11.33%). Onrust Island was dominated by opportunistic type, indicating high nutrient. The highest amount of foraminifers’ taxa was found in Karang Bongkok with good coral reef coverage, while the lowest in Onrust facing with Jakarta Bay.
Keywords: composition, distribution, benthic foraminifers, coral reef.
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
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http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7741
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 1 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7742
2020-07-06T08:17:42Z
jurnalikt:ART
nmb a2200000Iu 4500
"130701 2013 eng "
2620-309X
2087-9423
dc
THE CHARACTERISTIC OF DEEP SEA FORAMINIFERAL COMMUNITY IN TOMINI BAY, SULAWESI
Dewi, Kresna Tri
Hanafi, Mustafa
Hanafi, Mustafa
A total of 14 sediment samples from Tomini Bay, Sulawesi were used for this study as a component of sediment. The samples were carried out by using a gravity corer at water depth range between 600 and 1400 m. This study was a part of mapping activity on marine geology and geophysics during the first cruise of R/V Geomarin III in 2010. The purpose of this study was to examine the subsurface geology related to the potency of energy and mineral resources. Top core sediment samples were washed through 0.063mm opening sieve and then dried in an oven. About maximum 300 foraminiferal specimens were picked from every dried washed residue sample to separate them from other particles under a binocular microscope with brush and water. The result showed that most samples were dominated by planktonic foraminifera (>90%), such as Globorotalia menardii, Orbulina universa, Globigerinoides ruber and others as typical of deep sea sediments. On the other hand, benthic foraminifera was found less than 10% that was represented by Cibicidoides wuellerstorfi, Ceratobulimina pacifica, Pyrgo sp., Bolivinita quadralatera, Uvigerina peregrina, etc. The characteristic of deep sea foraminiferal community of this area may be used for interpreting environmental deposition in the adjacent areas that is useful for petroleum exploration.
Keywords: foraminifera, deep sea, Tomini Bay, Sulawesi.
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
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http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7742
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 1 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7743
2020-07-06T08:17:41Z
jurnalikt:ART
nmb a2200000Iu 4500
"130701 2013 eng "
2620-309X
2087-9423
dc
BENTHIC FORAMINIFERA AS BIOINDICATOR OF CORAL REEF ENVIRONMENTAL CONDITION BASED ON FORAM Index IN NATUNA ISLANDS, PROVINCE OF RIAU ISLANDS
Gitaputri, Kinanti
Kasmara, Hikmat
Kasmara, Hikmat
Kasmara, Hikmat
Erawan, Tatang S.
M., Suhartati
Erawan, Tatang S.
Erawan, Tatang S.
M., Suhartati
M., Suhartati
Foraminifera is one of single-celled protozoa, living in the water environment especially marine waters. This organism can be used as bioindicator of environmental conditions of coral reefs through a simple index called FORAM Index. The purpose of this research are to obtain FORAM Index values, to know any species of benthic foraminifera bioindicator of coral reefs environmental conditions that have been found and to find out whether there is a relationship between FORAM Index to the condition of coral reefs based on coral coverage percentage. The research used survey method on sediment sampling and measurement of environment parameters by P20 LIPI team in April 2011. Several important steps in this research such as sediment samples preparation, sample observation, and sample identification. The results showed that there were 80 species and 31 genera benthic foraminifera bioindicator of coral reefs environmental conditions were found in the Natuna Islands. The condition of coral reefs in the Natuna Islands based on FORAM Index (FI) values ranged from 2.6 to 5.94, and overall there was a positive relationship between FORAM Index and the condition of coral reefs based on coral coverage percentage i.e., the increase of FI was followed by the increase of coral coverage percentage. However, in the terms of correlation there were several different results, there was a strong correlation and a weak correlation.
Keywords: foraminifera, FORAM index, coral reef.
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
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Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 1 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7744
2020-07-06T08:17:41Z
jurnalikt:ART
nmb a2200000Iu 4500
"130701 2013 eng "
2620-309X
2087-9423
dc
SEAGRESS COVERAGE AND ECOSYSTEM CONDITION AT THE COASTAL AREA OF MADASANGER, JELENGA AND MALUK, WEST SUMBAWA
Poedjirahajoe, Erny
Mahayani, Ni Putu Diana
Sidharta, Boy Rahardjo
Salamuddin, Muhamad
The increase of temperature might affect the distribution and reproduction of seagrass. This research aims to determine the seagrass bed coverage and the ecosystem condition. Three line transects were established perpendicular to the coastal line with the distance of 50-100 m, or up to the border of the intertidal area. In each transect, sampling points were determined with a distance of 10-20 m. At the sampling points, a plot of 50 cm x 50 cm was established to measure the coverage percentage of seagrass vegetation. The seagrass species were also observed and recorded along the line transects. The percentage of seagrass coverage was measured using a method from Saito and Atobe (1994). The results showed that the coastal area of Jelenga has the highest percentage of seagrass coverage (>60%, healthy) among other coastal areas. This may be caused by the characteristic of Jelenga coast which was relatively calm, few visitors, low water turbidity, and high light penetration. While, other transects have percentage coverage of less than 60% (less healthy). There was one transect on Maluk coast which has coverage percentage of less than 29% (lack of seagrass species). The small coverage percentage on Maluk coast can be caused by the high number of visitors and high activity of fishing boats around the coast which results in high turbidity.
Keywords: coverage, ecosystem condition, seagrass bed, west Sumbawa.
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
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Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 1 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7745
2020-07-06T08:17:41Z
jurnalikt:ART
nmb a2200000Iu 4500
"130701 2013 eng "
2620-309X
2087-9423
dc
LIFE-FEED ENRICHMENT FOR LARVAL REARING OF YELLOWBAND CLOWNFISH (Premnas biaculeatus)
Setiawati, Ketut Maha
Gunawan, Gunawan
The seeds of yellowband clownfish from hatchery has a pale skin colour and a yellow stripe became white colour. The purposes of this research were to know the effects of life-feed enrichment on the growth of larva and the appearance of colors yellowband clownfish. The treatments were the enrichment of rotifers and Artemia with commercial enrichment + Nannochloropsis (A), and without commercial enrichment as control, only Nannochloropsis (B). This research conducted for 15 days rearing. Larva rearings of yellowband clownfish fish with treatment A were resulted the total length at the end experiment was 7.72 ± 0.63 mm, dan survival rate 52.6 ± 19.1 %. The total length at treatment B was 7. 61 ± 0.43 mm and survival rate 47.7 ± 24.2%. Different enrichment of life-feed was not significant different effect for total length, survival rate and colour of seeds
Keywords: life-feed, enrichment, growth, survival rate, colour, yellowband clownfish.
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7745
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 1 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7746
2020-07-06T08:17:41Z
jurnalikt:ART
nmb a2200000Iu 4500
"130701 2013 eng "
2620-309X
2087-9423
dc
DURATION TIME AND EGGS DENSITY TO IMPROVE CLOSED TRANSPORTATION TECHNOLOGY ON EGGS GROUPER
Ismi, Suko
The grouper hatchery technology has been successfully developed and grouper seed can be produced massively and sustainly. Egg is one of key successes in the hatchery processes. Eggs taken from hatchery egg producer were often far away from a final hatchery location. This study tried to find out the effectiveness of eggs transportation duration and densities for eggs’ hatchability of tiger grouper (Epinephelus fuscoguttatus). The first treatment: eggs at a density of 400 000 eggs/8 l sea water, transported with different duration time i.e., 6, 12, 18, and 24 hours. The second treatment: transportation eggs with duration 24-hour at different density i.e., 100,000; 200,000;300,00; and 400,000 eggs/8 l sea waters. Eggs were packaged in a plastic bag with 8 liters of water media, the plastic size 100 cm x 55 cm, ratio water with oxygen was 1: 3, the plastic bag inserted to sterofoam with size 75 cm x 40 cm x 30 cm, to reduce the temperature in sterofoam was added ice the size of 500 grams , wrapped in newspaper, styrofoam covered by selotipe. The results showed that eggs with transportation time of 6 and 12 hours were better and significantly different (P <0.05) than transportation time of 18 and 24 hours. Furthermore, density of 100,000 and 200,000 eggs/8 l sea waters were better and significantly different (P <0.05) than that density of 300,000 and 400,000 eggs/8 l sea waters.
Keywords: hatchery, eggs grouper, transportation.
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7746
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 1 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7747
2020-07-06T08:17:41Z
jurnalikt:ART
nmb a2200000Iu 4500
"130701 2013 eng "
2620-309X
2087-9423
dc
SETTLEMENT ABILITY OF PEARL OYSTER (Pinctada maxima) LARVAE AT DIFFERENT POSITIONS AND DEPTHS COLLECTORS
Hamzah, Mat Sardi
One of the success factor in the cultivation of pearl oysters (Pinctada maxima) within laboratory scale of is the ability of the larvae to settle on the collector. Stocking collectors which are not on time with an irregular position could cause a decline in seed production. The research was conducted from 25 July to 27August 2011 at Laboratory of Marine Bio-industry Technical Implementatation Unit, Research Centre for Oceanography, Indonesian Institute of Sciences, Lombok, West Nusa Tenggara (NTB). The aim of the study was to observe the attachment of larvae at different position and depth. Analysis of variance showed that larvae settlement was influenced by depth instead of position and the interaction between them. Real Honest Different Test showed that in the 20 cm depth was significantly different from 60 cm and 100 cm in number of larvae attached on the collector. The highest survival rate was in 20 cm depth with 68,98% (516 larvae) while in 60 cm was 17,11% (128 larvae) and 100 cm (9,22% (69 larvae), and the others were attached on the wall of the tank 4,68% (35 larvae).
Keywords: settlement ability of pearl oyster’s larvae (Pinctada maxima), collector, depth
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7747
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 1 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7749
2020-07-06T08:17:41Z
jurnalikt:ART
nmb a2200000Iu 4500
"130701 2013 eng "
2620-309X
2087-9423
dc
SPECTRAL OF REMOTE SENSING REFLECTANCE OF SURFACE WATERS
Nababan, Bisman
Wirapramana, Anak A.G.
Arhatin, Risti E.
Spectral measurements of remote sensing reflectance (Rrs) of surface waters in the northeastern Gulf of Mexico were conducted in various seasons in 1999-2000 using Fieldspec Analytical Spectral Devices (ASD) Spectroradiometer. Filtering process was performed on the data to eliminate invalid data. In general, in coastal waters particularly near rivers mouth (water type-2) the Rrs spectrals were relatively low at blue, maximum at green, and decreased to a minimum value at the red wavelength. In offshore waters (type-1), the general pattern of Rrs spectrals were maximum at the blue wavelength and then continued to decline at the green wavelength until the minimum value at the red wavelength except during summer where Rrs spectrals in most offshore area having the maximum value at the green wavelength due to the phytoplankton bloom as a result of freshwater intrusion from the Mississippi river. In general, the patterns and values of Rrs were significantly different among seasons and locations. Results showed that Rrs values at the blue wavelength (λ=400 nm) were generally higher in the spring than in other seasons ranging of 0.007-0.018 sr-1 in offshore waters and 0.004-0.015 sr-1 in coastal waters. During spring, Rrs values at the green wavelength (λ=500 nm) were also higher than in other seasons ranging of 0.005-0.013 sr-1 found in coastal waters. However, during summer in coastal waters, the maximum values of Rrs spectrals were found in different green wavelength on different locations showed the differences in the type and composition of phytoplankton, organic materials, and suspension matters at those locations.
Keywords: remote sensing reflectance, phytoplankton, offshore, coastal, Gulf of Mexico
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7749
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 1 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7753
2020-07-06T08:17:41Z
jurnalikt:ART
nmb a2200000Iu 4500
"130701 2013 eng "
2620-309X
2087-9423
dc
THE EFFECTS OF DIFFERENT IMMERSION METHOD AND TIME ON THE PHYSICO-CHEMICAL CHARACTERISTICS OF SKIPJACK TUNA (Katsuwonus pelamis) FISH MEAL
Litaay, Christina
Santoso, Joko
High fat content in a dark fleshed fish can affect on nutritional value because it can lead to odors in fish meal products. Effort Immersion (deffating) is one way to reduce fat content in fish meal products in order to reduce the products from odor. Research on methods and durations of immersion effects were conducted from October to November 2011. This study aimed to determine the best method to get quality materials skipjact tuna fish meal based on methods and durations of immersion. Fish sampling were taken from the village of Latuhalat, Ambon-Maluku waters. Deffating process used water, 3% acetic acid, and 0.8% sodium bicarbonate. Immersion durations were 2, 4, and 6 hours. Deffating method using 0.8% sodium bicarbonate with 6 hours immersion time exhibited the best quality fish meal with protein content of 82.86% and 1.10% fat content.
Keywords: deffating, fish meal, skipjact tuna.
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7753
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 1 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7754
2020-07-06T08:17:41Z
jurnalikt:ART
nmb a2200000Iu 4500
"130701 2013 eng "
2620-309X
2087-9423
dc
DIMENSION OF SEAMOUNT USING MULTIBEAM ECHOSOUNDER IN BENGKULU WATERS
Fahrulian, Fahrulian
Manik, Henry
Hartoyo, Djoko
The purpose of this research was to determine the dimensions of seamount using echosuonder in Bengkulu waters. The survey was conducted by BPPT, LIPI, the Ministry of Energy and Mineral Resources, CGGVeritas, and the Institut de Physique du Globe (IPG) Paris in the southwest of the Sumatera island on 18-19 December 2010. Two acoustic instruments were used i.e., ELAC Seabeam 1050D with a frequency of 50 kHz and Simrad EM 12D with a frequency of 12 kHz. Data acquisition was obtained by using the hydrostar software in Baruna Jaya 3 and 4 research vessels. CARIS HIPS and SIPS6.1 softwares were used toprocess the data of bathymetry. Amplitude and backscatter data were obtained by data processing on the MBSystem. Data visualization in 3-D was performed using the Fladermaus 6.2 software (personal license of Djoko Hartoyo). Seamount form was assumed as a cone with an elliptical base to calculate the dimensions. The result showed an under water seamount of 320 Km from the southwest of Bengkulu city at -4°22’9.16’’latitude and 99°25’01.47’’ longitude. The seamount height was ± 3,968 meters and had two peak separated at ± 3,050 meters. Seamount peaks located at ± 1.270 meters below sea level. The major axis was ± 50,240 meters and the minor axis in this seamount was ± 5,644 meters
Keywords: seamount dimension, bathymetry, backscattering, Bengkulu Waters
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7754
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 1 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7755
2020-07-06T08:17:41Z
jurnalikt:ART
nmb a2200000Iu 4500
"130701 2013 eng "
2620-309X
2087-9423
dc
GENETIC VARIATION OF HUMPBACK GROUPER (Cromileptes altivelis) ON F1 AND F3 GENERATIONS
Sembiring, Sari Budi Moria
Tridjoko, Tridjoko
Haryanti, Haryanti
Hatchery and culture technology of Humpback grouper has been developed. However, sometimes it is still found constraint in sedd production and caused instability of production due to failure by many factors. Breeding program become necessary to provide seed with high quality and good genetic variation. Quantitative characteristic selection is one of breeding program to improve productivity in grouper aquaculture. The aim of this research was to produce good phenotyphic and genotypic quality of Humpback grouper candidate broodstock. Selection of Humpback grouper F1 and F3 was done based on quantitative characteristic (body length and weight) and genotyphic characteristic by using ramdom amplified polymorphism DNA (RAPD) method. The results of conventional selection were found candidate broodstock of Humpback grouper F1 and F3 with body weight range from 170-210 g and 160-170 g consecutively. Heterozygosity values of Humpback grouper analized by RAPD of F1 and F3 were 0.7940 and 0.7749 consecutively and it was not significantly different. This value emphasis that population of this F3 Humpback grouper was still good to grow for broodstock.
Keywords: genetic variation, humpback grouper, F1, F3.
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7755
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 1 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7756
2020-07-06T08:17:41Z
jurnalikt:ART
nmb a2200000Iu 4500
"130701 2013 eng "
2620-309X
2087-9423
dc
ECOLOGICAL ASSESSMENT IN SEMARANG COASTAL WATER
Rositasari, Ricky
Lestari, Lestari
Lestari, Lestari
Lestari, Lestari
Coastal water is vulnerable to anthropogenic substances such as human activities by product in coastal land and upper land area. Semarang coastal area is one of areas which has progressive development in northern coastal of Java Island. The aim of this study was to evaluate ocean health status based on heavy metal contain and benthic foraminiferal characteristics as the bioindicator. Sampling and laboratory activities were carried out in August 2010. Sampling stations were located on the estuaries of Western Canal Flood, Tanjung Mas Port and Eastern Canal Flood. The result showed that Tanjung Mas pool port had the highest Pb, Zn,and Total Organic Compounds (TOC) concentrations. The average of abnormal test of benthic foraminiferal (Ammonia beccarii) were also higher in Tanjung Mas port than in eastern and western canal flood.
Keywords: assessment, coastal water, Semarang.
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7756
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 1 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7758
2020-07-06T08:17:40Z
jurnalikt:ART
nmb a2200000Iu 4500
"130701 2013 eng "
2620-309X
2087-9423
dc
DIFFERENCES CONCENTRATION DISTRIBUTION AND SOURCE OF IN ORGANOCHLORINE PESTICIDES IN WATER AND SEDIMENT IN JAKARTA BAY WATERS DURING TRANSITION SEASON
Khozanah, Khozanah
Study on the distribution and sources of organochlorine pesticide concentrations in water samples and sediments from the Jakarta Bay was conducted in April 2011 (transition season I) and June 2011 (dry season). The purpose of this study was to determine the distribution of pesticide concentrations in water and sediments and to identify possible sources of organochlorine pesticides. The concentrations of organochlorine pesticides was measured by the GC/ECD (electron capture detection) HP 5890 series II. Concentrations found in the water column during transition I season ranged from 11.596 to 74.338 ng/l (average=41.998 ng/l) and in dry season varied from 4.554 to 19.119 ng/l (average=7.741 ng/l). In sediment samples, concentrations found in transition I season varied from 0.936 to 2.816 ng/g (average=1.782 ug/g), and in dry season about 0.7691 to 7.138 ug/g, (average=2.722 ug/g). In the water column, the average concentration in transition I was higher than that found in dry season, whereas levels in sediment during transition season I was lower. The average levels of pesticides in the water column was higher than those found in sediments. These results suggested that the seasons played a role in the distribution of organochlorine pesticides in the water column and sediments. Source of organochlorine pesticides were suggested from agricultural activities in the mainland Cisadane.
Keywords: organochlorine pesticides, DDT, BHC, Jakarta Bay waters.
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7758
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 1 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7759
2020-07-06T08:17:40Z
jurnalikt:ART
nmb a2200000Iu 4500
"130701 2013 eng "
2620-309X
2087-9423
dc
COMMUNITY STRUCTURE OF PHYTOPLANKTON IN SEKOTONG AND KODEK BAY WATERS, WEST LOMBOK
Sutomo, Sutomo
Phytoplankton plays important roles of food weeb in aquatic ecosystem, can absorb and release CO2 which is very useful for other organisms and the environment. The purpose of this research was to study the community structure, including abundance, composition and diversity of phytoplankton in the Sekotong and Kodek Bay, West Lombok. The study was conducted in April 2012 at 10 stations in the Sekotong Bay and six stations in Kodek Bay. Sampling was done vertically by using plankton Kitahara net having mesh size of 80 μm. The results showed that the abundance of phytoplankton from 10 stations in Sekotong Bay ranged between 834,134-6,488,888 sel/m3, while in Code Bay ranged between 53,571-191,642 sel/m3. Phytoplankton dominant in the waters of Sekotong Bay were Chaetoceros and Skeletonema, while in Kodek Bay the dominant phytoplankton were Chaetoceros, Hemialus, Lauderia, and Skeletonema. The results of the analysis of the diversity of phytoplankton genera in Sekotong Bay showed the value of diversity index (H')=0.40-1.13 and dominancy index=0.41-0.85. While in Kode Bay, the diversity of phytoplankton genera showed the value of diversity index (H')=1.53-1.98 and dominancy index=0.03-0.28. Based on these results, it can be concluded that the diversity of phytoplankton genera in the waters Sekotong Bay could be classified as less to moderate and there was a tendency of being dominated by one genera in the population. The diversity of phytoplankton genera in Kodek could be classified as moderate and there were low tendency of domination by certain genera in the population.
Keywords: stucture community, phytoplankton, Sekotong Bay, Kodek Bay, West Lombok.
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7759
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 1 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7761
2020-07-06T08:17:40Z
jurnalikt:ART
nmb a2200000Iu 4500
"130701 2013 eng "
2620-309X
2087-9423
dc
THE ABUNDANCE AND SPATIAL DISTRIBUTION OF PLANKTON COMMUNITIES IN BANGGAI ISLANDS WATERS
Thoha, Hikmah
Rachman, Arief
Rachman, Arief
Banggai Islands waters are mixing area between Banda Sea and Makassar Sea, thus resulting in the existence of many unique marine ecosystems. This conditon might also lead to the occurrence of unique and specific plankton community in the oceanic ecosystem of Banggai Islands. This research was conducted in 26 June to 8 July using Baruna VIII research vessel. Phytoplankton and zooplankton samples were collected in 14 stations using Kitahara and NORPAC plankton net. The plankton data in this research was analyzed with Bray-Curtis Clustering Analysis (Single Link), linear regression and Pearson correlation matrix. The results showed that zooplankton abundance was highest at the strait between Liang and Labobo Island, while phytoplankton was found abundant at eastern Tinangkung Island. On the other hand, Mesamat Bay was found having very low abundance of zooplankton and phytoplankton, which probably related to low nutrient availability in the water column. Calanoids, cyclopoids, and oikopleurans were dominant taxa with widest spatial distribution and highest importance value in zooplankton community of Banggai Islands. Meanwhile Chaetoceros, Rhizosolenia and Thalassiothrix were the dominant genus with widest spatial distribution and highest importance value in phytoplankton community. The result of clustering analysis showed that there were three stations with unique plankton community, and was found very different from the planktonic community in other stations. It was interesting to note that bottom-up control by nutrient availabilty, and top-down control by predator-prey interaction, probably not the main factor responsible for the unique pattern of plankton community structure of Banggai Islands.
Keywords: plankton community, Banggai islands waters, Bray-Curtis clustering analysis, biological indices.
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7761
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 1 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7762
2020-07-06T08:17:40Z
jurnalikt:ART
nmb a2200000Iu 4500
"130701 2013 eng "
2620-309X
2087-9423
dc
TRIGLYCERIDE COMPOSITION OF SIXTEEN STRAINS OF MARINE DIATOM
Panggabean, Lily M.G.
Rasyid, Abdullah
Duniani, Zarrah
Meliana, Yana
Kurniasih, Indah
Trigliceride or triacylglicerol (TAG) composition in crude oil of sixteen strain of marine diatom has been detected by spectra analyses on an Electrospray - Ion Trap – Mass Spectrometry (ESI-IT-MS) HCT Bruker-Daltonic GmbH instrument with AgNO3 used as coordination ionization agent. Biomass samples of each microalga strain were taken from early and late stationary cultures in f/2 enriched seawater and algal oils were extracted according to Bligh and Dyer. Results from spectra analysis showed that P-Pt-P (C16:0-C16:1-C16:0) were distinguished in TAG from diatom strains Chaetoceros sp.1, Chaetoceros sp.2, Thalasiossira sp.1, Thalasiossira sp.2, Thalasiossira sp.3, Navicula sp. 1, Navicula sp. 2, Navicula sp. 3, Navicula sp. 4, Nitzschia sp. 2 and Amphora sp. In contrast, TAGs in Melosira sp. included P-P-P (C16:0-C16:0-C16:0) and P-P-O (C16:0-C16:0-C18:1) were identified. TAGs from Chaetoceros sp. were the most varies among samples, i.e. P-Pt-P (C16:0-C16:1-C16:0), A-P-M (C20:4-C16:0-C14:0), P-Pt-Lt (C16:0-C16:1-C18:3), P-Pt-A (C16:0-C16:1-C20:4), D-P-P (C22:6-C16:0-C16:0), A-Ln-P (C20:4-C18:2-C16:0). Various TAGs were also detected in Nitzschia sp.2, i.e. P-Pt-M (C16:0-C16:1-C14:0), P-Pt-P (C16:0-C16:1-C16:0), P-Pt-S (C16:0-C16:1-C18:0), P-Pt-A (C16:0-C16:1-C20:4). TAGs composition in Skeletonema strains that similar to those in Nitzschia sp.1 has longer carbon, i.e. P-P-O (C16:0-C16:0-C18:1), P-O-O (C16:0-C18:1-C18:1) and O-O-O (C18:1-C18:1-C18:1). TAGs with longer carbon chain and more double bond including highly unsaturated fatty acid C20:4 were increased with culture age in diatoms Chaetoceros sp.1, Chaetoceros sp.2, Thalasiossira sp.2, Navicula sp.1 and Nitzschia sp. 2.
Keywords: diatom, TAG, ESI-IT-MS, f/2, early and late stationary
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
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http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7762
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 1 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7763
2020-07-06T08:17:40Z
jurnalikt:ART
nmb a2200000Iu 4500
"130701 2013 eng "
2620-309X
2087-9423
dc
DISTRIBUTION AND PREDICTION ON HEAVY METALS POLLUTION LEVEL (Pb, Cd, Cu, Zn, and Ni) IN SEDIMENT IN BANGKA ISLAND WATERS USING LOAD POLLUTION INDEX AND GEOACCUMULATION INDEX
Ahmad, Fasmi
Bangka Island is rich in natural resources particularly tin minerals. The increasing of tin mining has elevated various wastes such as tailings, oil, and fuel coming from the sand scraper tin boat. These wastes containing toxic heavy metals may harmful to marine organism. Measurement of Pb, Cd, Cu, Zn, and Ni were carried out in September 2010. The purpose of this research was to predict the pollution degree of Pb, Cd, Cu, Zn, and Ni in sediment using two different methods namely geoaccumulation index (I_geo) and pollution load index (PLI). The samples of sediments were collected at 20 stations using Gravity Core. The content of heavy metals in all samples was determined using Atomic Absorption Spectrophotometer with a mixture of air and acetylene flame. The results showed that there was a different of prediction on sediment pollution level between Load Pollution Index with Geoaccumulation Index. According to Load Pollution Index, sediments in this waters were not polluted by Pb, Cd, Cu, Zn, and Ni (PLI<1). Based on Geoaccumulation Index, sediment were also not polluted by Pb, Cu, Zn, and Ni (Igeo<0). While for Cd, sediments divided into three categories, namely not polluted (Igeo<0), light polluted (0<Igeo<1), and medium pollued (1<Igeo<2). The concentration of the heavy metals still lower than that sediment quality guideline values.
Keywords: Bangka Island, heavy metals, geoaccumulation index, pollution load index.
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7763
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 1 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7764
2020-07-06T08:17:40Z
jurnalikt:ART
nmb a2200000Iu 4500
"130701 2013 eng "
2620-309X
2087-9423
dc
CONCENTRATION OF Hg, Cd, Cu, Pb AND Zn IN SEDIMENT OF GRESIK WATERS
Lestari, Lestari
Budiyanto, Fitri
Gresik coastal waters is one of the areas that have a potential risk for environmental damage due to anthropogenic activities. Water and sediment samples were collected to determin metals concentration and to identify sediment quality in February 2012. Twelve samples were collected for analysis of mercury (Hg) and four other metals (Cd, Cu, Pb, and Zn). Mercury was analyzed using USEPA method 7471B with Flameless-AAS (Atomic Absorption Spectrophotometer) varian type SpectarAA VGA 20-76 and the other metals were analyzed using USEPA 30050B with Flame-AAS. Results showed that ranges and average concentrations of Hg were 0.04-0.33 (0.13) mg/kg, Cd 0.08-3.05 (0.64) mg/kg, Cu 23.7-234.0 (85.5) mg/kg, Pb 1.74-12.7 (4.29) mg/kg, and Zn 77.0-405.0 (133.0) mg/kg. Metals with high concentrations were detected in some places and by SQG-Q, surface sediment showed a moderate impact level of biological adverse effects in aquatic sediments.
Keywords: mercury, heavy metal, sediment, Gresik.
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
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http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7764
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 1 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7766
2020-07-06T08:17:40Z
jurnalikt:ART
nmb a2200000Iu 4500
"130701 2013 eng "
2620-309X
2087-9423
dc
EMBRYONIC DEVELOPMENT AND HATCHING EGGS RATIO OF BLACKSADDLED CORAL GROUPER (Plectropoma laevis) AT DIFFERENT TEMPERATURE MEDIA
Andriyanto, Wawan
Slamet, Bejo
Ariawan, I Made Dharma Jaya
In seed production, the success of spawning and egg production is very important to mantain the cultivating sustainability. The quantity and quality of the blacksaddled coral grouper eggs should be properly manipulated to produce the higher values. The purpose of this study was to determine the effect of different temperatures on the results of hatch success (embryo development, incubation time, hatching rate and larvae abnormality). The eggs used were obtained from natural spawning and collected with egg collector. The fertilized eggs were incubated in four pieces of container and were treated with different temperatures of 26°C, 28°C, 30°C, and 32°C which each treatment was repeated 3 times. The incubation equipment with automatic temperature control was used in this treatment. The results showed that the eggs which were incubated at 32°C produced a faster of embryonic development and hatch within 14 hours while the temperature of 26°C took 18 hours to hatch. However, the temperature of 32°C resulted in low egg hatchability, with 60.29%, as well as the abnormalities of 8.42%. The best temperature of each treatment was obtained at the incubation temperature of 30°C, whereas the phase of the hatch was achieved within 15 hours, with egg hatchability of 92.25% and the abnormality of 6.29%. From these results, it can be concluded that the optimum incubation temperature for Blacksaddled coral grouper was 30°C.
Keywords: hatching, egg of Blacksaddled coral grouper, Plectropoma laevis, incubation temperature.
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7766
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 1 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7769
2020-07-06T08:17:40Z
jurnalikt:ART
nmb a2200000Iu 4500
"130701 2013 eng "
2620-309X
2087-9423
dc
MICROBES PARAMETERS OF WATER QUALITY FOR AQUACULTURE ON PARI ISLAND WATERS
Sutiknowati, Lies Indah
The objective of this research was to evaluate waters quality in Pari island waters for aquaculture purpose based on bacteriological information conducted in Mei and September 2011. Microbiological parameters analyzed were total density of bacteria for coliforms, E.coli, pathogenic, heterotrophic, halotoleran, phosphate-nitrate-ammonia breaker, and total cells. Method to analyze coliform bacteria was filtration, identification of pathogenic bacteria using biochemical test, density analises for heterotrophic bacteria, analises for phosphate-nitrate-ammonia breaker bacteria using pour plate, and total cell using Acridine Orange Epifluorescence Microscopy. Results showed that the abundance of total coliform cell was about 1000-7000 colony forming unit (cfu)/100 ml. The abundance of heterotrophic, halotolerant, phosphate-nitrate-ammonia bacteria in seawater was (3.6-4.3)x105 cfu/ml, (1.1-1.3)x105 cfu/ml, (0.5-3.44)x103cfu/ml; and (3.6-6.7)x105 cfu/ml, (1.6-2.7)x105 cfu/ml, (0.6-5.22)x103 cfu/ml in sediment, respectively. The total cell of bacteria was (0.05-2.1)x107cells/ml. The dog-conch (Strombus turturella) and blood-clamps (Anadara granosa) can survive in Pari Island and there was a significant increase in sea grass litter with growth average of 0.67 mm/day and 0.90 mm/day. During snails and clamps growth, there were found several genus of pathogenic bacteria such as Salmonella, Vibrio, Aeromonas, Pseudomonas, Citrobacter, Proteus, Shigella, Hafnia, and Yersinia. The results showed that Pari island waters was suitable for developing shellfish aquaculture dog conch and blood clamps.
Keywords: bacteria, parameter, shellfish, aquaculture.
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
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http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7769
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 1 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7770
2020-07-06T08:17:40Z
jurnalikt:ART
nmb a2200000Iu 4500
"130701 2013 eng "
2620-309X
2087-9423
dc
ZOOPLANKTON COMMUNITY IN LAMALERA SEA AND SAWU SEA, EAST NUSA TENGGARA
Fitriya, Nurul
Lukman, Muhammad
Zooplankton community was studied in Lamalera Sea and Sawu Sea during DIKTI-P2O LIPI Expedition from 19 – 30 July 2011. Besides being a potential fishing ground, the Lamalera sea and Sawu Sea have been a migration path for Cetacean (large marine mammals), particularly during the southeast monsoon season. The purposes of this study were to investigate community structure, abundance, and spatial distribution of zooplankton in the Lamalera Sea and the Sawu Sea. Plankton samples were collected from 23 stations, by NORPAC 300 µm-net that was vertically hauled from maximum 200 meter depth up to the surface water. The result showed that there were 45 taxa of zooplankton, which was dominated by copepods . The abundance of the zooplankton between 491 - 4537 individu/m3. Average diversity index and evenness values were 1.59 ± 0.21 and 0.50 ± 0.04, respectively. In this area, Creel has been found in all research stations but the abundance was small. Species composition was relatively the same between sampling stations suggesting that there was no different in composition between north and south parts, which virtually comprise of different water masses. It showed that spatial distribution of zooplankton was relatively wide-reaching.
Keywords: zooplankton, copepoda, creel, Lamalera sea, and Sawu Sea.
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7770
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 5 No. 1 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
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oai:ojs.journal.ipb.ac.id:article/7778
2020-07-06T08:17:45Z
jurnalikt:ART
nmb a2200000Iu 4500
"121231 2012 eng "
2620-309X
2087-9423
dc
INCREASING COLOR QUALITY OF RED EMPEROR SNAPPER Lutjanus sebae SEED THROUGH ENRICHED DIET WITH RED FRUIT Pandanus conoideus OIL AS BETA-CAROTEN SOURCE
Aslianti, Titiek
Nasukha, Afifah
Market price of red emperor snapper Lutjanus sebae is often determined by its color performance. Adding beta-carotene on a fish diet would possibly escalate red pigmentation. Oil from a red fruit (Pandanus conoideus, Lam) known as potential beta-carotene source was used as a supplement diets. The dosage of 10, 5, and 0 ml were added to every kg of pellet as the treatment. Three hundred seeds with initial average length of 8.43±0.9 cm and body weight of 13.22±3.9 g were stocked in each of three unit fiberglass tank of 4 m3 seawater (salinity of 33-34). Experiment was conducted during three-month periods. Feeding frequency was twice a day with dosage of 3% of biomass. Monthly monitoring was done to measure the growth rate. Color performance was taken by digital photography at the end of observation and analyzed by conversion methods of color gradation using “Microsoft Adobe Photoshop-8”program. Carotene contents in the diets and fish body was examined. Fed effectivity values were observed by analysis of feed conversion ratio (FCR) and water quality that observed every 3 days. The results showed that the Pandanus conoideus oil as beta-carotene source had a significant role in increasing performance of red emperor snapper color i.e. brighten in red color. Ten ml dosage of Pandanus conoideus oil gave the best color and growth performance with 17.99 cm and 143.10 g for total length and body weight respectively, with 95.67% survival rate.
Keywords: Beta-carotene, Color Performance, Red emperor snapper, Red fruit oil.
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
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http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7778
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7780
2020-07-06T08:17:45Z
jurnalikt:ART
nmb a2200000Iu 4500
"121231 2012 eng "
2620-309X
2087-9423
dc
REPRODUCTION BIOLOGY OF TRUE PERCULA CLOWN FISH Amphiprion percula IN HATCHERY
Setiawati, Ketut Maha
Gunawan, Gunawan
Hutapea, Jhon Harianto
True percula clown fish (Amphiprion percula) is one of marine ornamental fish with high economic value and can spawn throughout the year in an aquarium. The aims of this research were to understand reproduction aspects of true percula clown fish broodstock in an aquarium. A pair of broodstock used in this experiment were 4-9 cm in total length and maintained in an aquarium of 60x40x30 cm3 dimension. Numbers of brrodstock were 18 pairs and each aquarium filled with one pair of broodstock. During the experiment, fish were fed with artificial feed first and one hour later with mysids shrimp and copepod until satiation twice a day. Parameters observed were broodstock size, numbers and hatching rate of eggs. The results showed, the size of spawned female were range from 6.6-9.5 cm and male from 4.6-6.2 cm. Average of eggs produced per spawning was varied 423±255 with the average of spawning frequency was 2.78±0.38 times/month. Broodstock was spawn partially with the maximum spawning frequency of single broodstock was 4 times/month. The biggest female with size of 9.5 cm was still productive and spawn 3 times/month. There was a pair of broodstock which can produce more than 700 eggs/spawning. This results indicated that true percula clown fish can spawn throughout the year in the aquarium with varied of eggs number and spawning frequency for each individual and spawning period. The average of hatching rate during the experiment was 79.72±13.73 % with range between first to the next spawning 0f 7-14 day.
Keywords: reproduction, true percula clown fish, Amphiprion percula, hatching rate
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
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http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7780
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7781
2020-07-06T08:17:45Z
jurnalikt:ART
nmb a2200000Iu 4500
"121231 2012 eng "
2620-309X
2087-9423
dc
GROWTH AND SURVIVAL OF TROPICAL ABALONE Haliotis asinina SEED IN CONCRETE TANKS AT DIFFERENTS STOCKING DENSITY
Hamzah, Mat Sardi
Dwiono, Sigit Anggoro Putro
Hafid, Safriyadi
Tropical abalones (Haliotis asinina) is a marine gastropod that has high economic value and consumed by people in the world. In 2002, the production of abalones was 4.076 ton from total production of marine fisheries in the world 8.000 ton. The countries that produce abalone by farming are Taiwan, Cina, South Africa, Japan, Cilie, USA, Australia and New Zealand. Information about the production in Indonesia is scarce. The main issue faced by farmer is higher mortality during post larvae and juvenile. The aim of this research was to observe the influence of abalone seed density in concrete tanks regarding to growth and survival. The research was conducted in January - May 2012 Mataram Marine Bio Industry Technical Implementation Unit, LIPI. Analysis of varians showed that seed densities was not significantly different (P>0.05). The highest survival rate were in density 75 individual/tank with 11.11 % mortality. The highest growth rate were in 50 individual/tank with shell growth rate 0.21cm/14 days and seed weight was 1.23 g.
Keywords: growth, survival rate, seed of abalone (Haliotis asinina), density
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
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http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7781
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7782
2020-07-06T08:17:45Z
jurnalikt:ART
nmb a2200000Iu 4500
"121231 2012 eng "
2620-309X
2087-9423
dc
PERIODS OF MOUTH OPENING AND YOLK ABSORPTION RELATED TO THE ACTIVITY OF DIGESTIVE ENZYMES IN THE EARLY STADIA FROM THE SECOND GENERATION OF HUMPBACK GROUPER BROODSTOCK
Andriyanto, Wawan
Marzuqi, Muhammad
The experiment was carried out to determine the exposure time of the first mouth opening on humpback grouper larval from F2 broodstock on hatchery until 10 DAH (days after hatching) because this phase is a critical phase of larval adaptation from food endogenous (from yolk sac) to the ability of absorbing nutrients from external (exogenous). The eggs used were collected from natural spawning of second generation of humpback grouper reared in the tank size of 150 litre. The mouth opening was observed at 90 and 45 degrees under computerize integrated microscope and processed by a specific software. The rate of yolk absorption was observed in larvae from the beginning to the end of breeding, while the activities of digestive enzymes (trypsin and chymotripsin) were analyzed by enzyme assay techniques. The results showed that the period of mouth opening of larvae of humpback grouper occurred at 3 DAH with mouth openings of 45° as large as 0.103 mm and of 90° as large as 0.156 mm. In the early stadia, the diameter of yolk was 0.1875 mm, while the oil globule was 0.0537 mm. At 4 days after hatching, the yolk and oil globule had been absorbed, while the enzymes trypsin and chymotripsin were detected in the early stadia. The results also showed that the larvae was started to use foods from outside after the age of 4 DAH. Up to the age of 10 days, the mouth opening increased and the activity of trypsin and chymotripsin were still detected.
Keywords: progeny larvae of humpback grouper F2, mouth opening, yolk sac, enzyme
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
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Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7783
2020-07-06T08:17:44Z
jurnalikt:ART
nmb a2200000Iu 4500
"121231 2012 eng "
2620-309X
2087-9423
dc
EFFECT OF CALCIUM – PHOSPHOROUS WITH DIFFERENT RATIO ON NUTRIENT RETENSION AND CHANGES THE CHEMICAL COMPOSITION OF TIGER SHRIMP JUVENILE (Penaeus monodon FABR.)
Zainuddin, Zainuddin
Calcium and phosphorous are two important minerals because of their functions for growth and bone mineralization as well as lipid and carbohydrate metabolisms. The study purposes were to determine the effects of calcium and phosphorus with different ratios of nutrient retention and chemical composition changes of juvenile shrimp body. Organism used in this experiment were juvenile tiger prawns with an average weight of 3.43 ± 0.05 g/fish. Stocking density was 6 fish per aquarium (size 60cmx50cmx40cm). This research was formulated according to completely randomized design with four treatments and three replicates. The treatments applied were the ratio of calcium and phosphorus in shrimp food i.e., A (Ca/P=1:0,5), B (Ca/P=1:1,0), C (Ca/P=1:1.5) and D (Ca/P=1:2,0 ). Food was served four times per day i.e. 07.00 AM, 11.00 AM, 15.00 PM, and 21.00 PM.. The juvenile tiger prawns maintained for 8 weeks. The results showed that calcium and phosphorus with different ratios in the diet did not give effect to the retention of nutrients include protein, fat, calcium, and phosphorus. While the provision of calcium and phosphorus in different ratios to changes in body chemical composition includes protein, fat and ash content of juvenile tiger prawns have a significant effect except for crude fiber and BETN not significant. The result indicated that the ratio of Ca and P with a value of 1:1.0 to 1:1.5 gave better effect in changing the chemical composition of juvenile shrimp body.
Keywords: tiger shrimp juvenile, retention of nutrients, chemical composition
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
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http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7783
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7784
2020-07-06T08:17:44Z
jurnalikt:ART
nmb a2200000Iu 4500
"121231 2012 eng "
2620-309X
2087-9423
dc
THE GROWTH PATTERN OF BLACKSADDLED CORALGROUPER LARVAE (Plectropoma laevis LACEPÈDE, 1801) AND THEIR CONSUMPTION RATE TO ZOOPLANKTON ROTIFER (Brachionus rotundiformis)
Melianawati, Regina
Astuti, Ni Wayan Widya
Astuti, Ni Wayan Widya
Slamet, Bejo
Slamet, Bejo
Blacksaddled coralgrouper Plectropoma laevis has been started to conserve to prevent from over exploitation. The study purposes were to determine the growth pattern during larvae to juvenile stage of Blacksaddled coralgrouper and their consumption rate to zooplankton rotifers Brachionus rotundiformis. Domesticated broodstocks have been rearing in 100,000 l concrete tanks. The eggs from spawning broodstocks were hatched and the larvae have been kept to juvenile. Larvae rearing was done in 6,000 l concrete tanks. During the rearing period, larvae were fed with zooplankton rotifer, artemia and artificial food. Parameters measured were eggs and oil globule diameter, larval total length, length of larval dorsal fin and ventral fin, the number of zooplankton that consumed by larvae and water temperature. Microscopic method was used to measure the parameters. The result showed that eggs and oil globule diameter ranged in 800-850 μm and 168-200 μm, respectively. Total length of newly hatched larvae was 2.53±0.13 mm. The growth pattern of total length from larva to juvenile stage was exponential, while the growth pattern of dorsal fin and ventral fin length was linear. Larvae grew very fast after 35 days old. The pattern of larval consumption rate to zooplankton rotifers was linear. Time period from larvae to juvenile stage was 45-55 days on water temperature 27-29oC.
Keywords: growth, consumption rate, rotifers, larvae, Blacksaddled coralgrouper
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
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http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7784
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7785
2020-07-06T08:17:44Z
jurnalikt:ART
nmb a2200000Iu 4500
"121231 2012 eng "
2620-309X
2087-9423
dc
THE GRUNTS (FAMILY HAEMULIDAE) OF THE SPERMONDE ARCHIPELAGO, SOUTH SULAWESI
Burhanuddin, Andi Iqbal
Iwatsuki, Yukio
Fish diversity monitoring could be utilized as a basis for formulating management regulation of the fisheries resources. This study was conducted to describe the grunt of the family Haemulidae from the Spermonde Archipelago, South Sulawesi. Specimens were collected in Rajawali and Paotere Fish Landing Port Makassar, South Sulawesi from August 2003 to November 2010. The results showed that there were thirteen species representing three genera of family Haemulidae inhabiting the area were examined and identified: Diagramma pictum (Thunberg, 1792), Plectorhinchus albovittatus (Rüppell, 1838), Plectorhinchus chaetodonoides Lacepède, 1801, Plectorhinchus chrysotaenia (Bleeker, 1855), Plectorhinchus flavomaculatus (Cuvier in Cuvier and Valenciennes, 1830), Plectorhinchus gibbosus Lacepède, 1802, Plectorhinchus lessonii (Cuvier in Cuvier and Valenciennes, 1830), Plectorhinchus lineatus (Linnaeus, 1758), Plectorhinchus picus (Cuvier in Cuvier and Valenciennes, 1830), Plectorhinchus polytaenia (Bleeker, 1852), Plectorhinchus vittatus (Linnaeus, 1758), Pomadasys argenteus (Forsskål, 1775), Pomadasys maculatus (Bloch, 1793). The local name available of each species was given.
Keywords: grunt, haemulidae, spermonde, south Sulawesi
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
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Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7786
2020-07-06T08:17:44Z
jurnalikt:ART
nmb a2200000Iu 4500
"121231 2012 eng "
2620-309X
2087-9423
dc
OPTIMALIZATION OF FEED DOSAGE AND FREQUENCY IN PRODUCTION OF ROTIFER (Brachionus rotundiformis)
Astuti, Rina P.
Sagala, Sophia L.
Gunawan, Gunawan
Sumiarsa, Gede S.
Imanto, Philip T.
The availability of rotifer as live food is importance in a larval mariculture. Therefore a continuous and high production of rotifer is needed. The study was aimed to determine the frequency and dosage of the best food in rotifer culture. Nannochloropsis oculata, yeast and scott’s emulsion are used as potential feeds for rotifer. Three dosages of N. oculata (150,000; 250,000, and 350,000 cells/ind.rotifer/day) were applied in the study and were given twice per day. Meanwhile, yeast(0.5 g/106 ind./day) and Scott’s emulsion with different dosages (2, 4, and 8 μg/106 ind./day) were given with two different feeding frequencies (two and four times a day) for each dosages. Each treatment was done in triplicates. Sampling of rotifer was conducted in the morning (AM) and afternoon (PM). Water quality (temperature, dissolved oxygen and ammonia) was also measured. Growth and productivity of rotifer were determined from the number of rotifer and the number of rotifer eggs, respectively. The results showed that the optimum productivity of rotifer was achieved by giving N. occulata of 250,000 sel/ind/day, twice a day in four days culture. Meanwhile, treatment with yeast and Scott’s emulsion gave best performance when applying 0.5 g/106 and 2 μg/106 ind./day twice per day, respectively. Yeast and scott’s emulsion treatment yielded optimum production in two days of culture.
Keywords: rotifer, productivity, yeast, Scott’s emulsion, foodd dosage
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
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http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7786
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7787
2020-07-06T08:17:44Z
jurnalikt:ART
nmb a2200000Iu 4500
"121231 2012 eng "
2620-309X
2087-9423
dc
ZOOPLANKTON SPATIAL DISTRIBUTION AND COMMUNITY STRUCTURE IN BANGGAI SEA
Rachman, Arief
Asniariati, Elly
Banggai Sea is an interesting ecosystem due to mixing influences from Banda Sea in the west and Maluccas Sea in the east. Therefore, a unique zooplankton community structure and specific distribution pattern should be found in this area. This research was carried on using Baruna Jaya VIII research vessel and samples were collected in 14 sampling stations. Vertical towing using NORPAC plankton net (300 μm) was conducted to collect zooplankton samples. Result showed that inner Mesamat Bay had the lowest abundance of zooplankton, probably due to low water quality resulted from anthropogenic activity. Meanwhile the strait between Liang and Labobo Island had the highest zooplankton abundance in Banggai Sea. Calanoids was the dominant zooplankton taxa in the ecosystem and contributing 55.7% of total density of zooplankton community. The highest importance value made this taxa to be very important factor that regulates the lower trophic level organisms. Results also showed that zooplankton was distributed nearly uniform in eastern but aggregated to several stations in western Banggai Sea. Zooplankton abundance was higher in the central of Banggai Sea, compared to western and eastern area. According to Bray-Curtis clustering analysis the strait between Liang and Labobo Island has unique zooplankton community structure. This might happened due to mixing of water from two highly productive seas that influenced the Banggai Sea ecosystem. From this research we conclude that this strait probably was the zooplankton hot spot area which might also indicate that this area also a hot spot of fishes in the Banggai Sea.
Keywords: spatial distribution, zooplankton, community structure, hot spot, Banggai
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
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Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7788
2020-07-06T08:17:43Z
jurnalikt:ART
nmb a2200000Iu 4500
"121231 2012 eng "
2620-309X
2087-9423
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THE DISTRIBUTION OF TOXIC DINOFLAGELLATES ON SEA GRASS Enhalus acoroides AT PARI ISLAND, SERIBU ISLANDS
Widiarti, Riani
Anggraini, Fitrian
Benthic dinoflagellates causing Ciguatera Fish Poisoning (CFP), could be found attached either on macroalgae or sea grasses. Research on density and distribution of benthic dinoflagellates on sea grass leaves was conducted in Pari Island waters, Seribu Islands, in April 2012. Research was carried out by collecting Enhalus acoroides leaves from each site, and put inside the plastic jars containing seawater. In order to separate the dinoflagellates species from the leaves, the plastic jars were shaken vigorously and the seawater filtered through a series of sieves (125μm and 20μm). The resulted residue was than observed using Sedgewick rafter cell under light microscope. Based on samples collected, eight benthic dinoflagellates were found, where five of them were potentially toxic. They were Prorocentrum concavum, P. lima, P. rhathymum, Ostreopsis lenticularis, and O. siamensis. The highest abundance was found in the reef flat on the southern side of the island (652 sel/cm2 seagrass leaf). Research showed that the density and distribution of toxic dinoflagellates on sea grass at Pari Island, Seribu Islands were more influenced by local water currents.
Keywords: benthic dinoflagellates, Ciguatera Fish Poisoning, Pari Island, seagrass
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7788
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7789
2020-07-06T08:17:43Z
jurnalikt:ART
nmb a2200000Iu 4500
"121231 2012 eng "
2620-309X
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FOULING ORGANISMS ASSOCIATED WITH MANGROVE IN AMBON INNER BAY
Tapilatu, Yosmina
Pelasula, Daniel
Limited literatures exist on fouling organisms attached to mangrove in Ambon Inner Bay (AIB). The purpose of this research is to obtain updated information on fouling organism in this ecosystem. Samplings were carried out in two periods, representing first transition period and west monsoons, at two different locations in AIB (Poka and Kate-kate). Methods used were direct observation and descriptive exploration during sampling. Fouling organisms and mangrove type were identified using identification books. The results obtained indicate that predominant organisms belonged to mollusks and crustacea. Four gastropod species (Littorina scabra, Nerita oualaniens, Terebralia sulcata, Cassidula nucleus) and one bivalve (Saccostrea cucullata) were identified. Clibanarius ambonensis and Cardisoma carnifex were the species identified from crustacea group. Type of mangrove found, either naturally or through replanting program in Poka were Rhizophora apiculata, R. stylosa and Sonneratia alba. There were four different species found in Kate-kate (S. alba, R. apiculata, Ceriops tagal and Aegiceras corniculatum).
Keywords: fouling organisms, mangrove ecosystem, Ambon Inner Bay
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7789
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7790
2020-07-06T08:17:43Z
jurnalikt:ART
nmb a2200000Iu 4500
"121231 2012 eng "
2620-309X
2087-9423
dc
SPATIAL ANALYSIS OF SHORELINE CHANGES IN THE COASTAL OF SUBANG DISTRICT, WEST JAVA
Taofiqurohman, Ankiq
Ismail, M. Furqon Azis
Ismail, M. Furqon Azis
Ismail, M. Furqon Azis
ABSTRACT
Observation of coastal shoreline changes in the Subang District was conducted using Digital Shoreline Analysis System Program based on the satelite images of Landsat TM from 1996 to 2010. The purpose of this study was to determine the distance of shoreline change. Methods used in this study were field survey and regression analysis of shoreline data. The results of this study indicated the existence of a region experiencing accretion and abrasion. The maximum width of accretion of the coast was 1,051.55 meter while the maximum abration was 1,206.83 meter. Coastal shoreline change in Subang District occurred mainly due to the development activities such as residential construction, altering the coastal mangrove to ponds and rice paddies, and sediment transport from the river around Subang District.
Keywords: shoreline, Subang District, satelite images, accretion, abration
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7790
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
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oai:ojs.journal.ipb.ac.id:article/7791
2020-07-06T08:17:43Z
jurnalikt:ART
nmb a2200000Iu 4500
"121231 2012 eng "
2620-309X
2087-9423
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SEA WATER QUALITY OBSERVED FROM NUTRIENT ASPECT, DISSOLVED OXYGEN AND PH IN THE BANGGAI WATERS, CENTRAL SULAWESI
Simanjuntak, Marojahan
Banggai Waters, Central Sulawesi is very important because the waters is very rich in marine resources and its oceanographic conditions are affected by land and Banda Sea. This research was conducted in June-July 2011 using a research vessel Baruna Jaya VIII. The research objective was to determine water quality based on as an indicator of fertility waters and factors influencing the water quality. The parameters studied were phosphate, nitrate, silicate, dissolved oxygen, and acidity (pH). Water samples were collected using Niskin Bottle attached with CTD form three different depths i.e., surface (0-1 m), middle (20-100 m), and near bottom layer (100-200 m) at 14 stations. Concentrations of phosphate, nitrate, and silicate were analyzed according to the method of Strickland and Parsons. Dissolved oxygen concentrations were measured by Winkler method. The degree of acidity (pH) was measured with pH meter Cyber Scan 300. The results indicated that nutrient concentrations were generally higher in eastern and southern waters. Phosphate concentrations ranged from 0,04–1.70 µg A/l; nitrate 0.28–27.23 µg A/l, and silicate 1.96–46.56 µg A/l. Dissolved oxygen concentrations ranged from 2.14–4.15 ml/l, and pH values from 7.95–8.26. In reference to the quality standards set by the Ministry of Environment (KMNLH), the Banggai Waters, Central Sulawesi is still in good conditions for the life of various biota..
Keywords: water quality, fertility waters, nutrients, Banggai Waters
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
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http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7791
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7792
2020-07-06T08:17:42Z
jurnalikt:ART
nmb a2200000Iu 4500
"121231 2012 eng "
2620-309X
2087-9423
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NUTRIENT PHOSPHATE, NITRATE AND SILICATE DISTRIBUTION OF NATUNA ARCHIPELAGO WATERS
Muchtar, Muswerry
Research on phosphate, nitrate and silicate distributions of Natuna ArchipelagoWaters was conducted using RV Baruna Jaya VIII in April 2011. Concentration of phosphate, nitrate and silicate were analyses by Spectrophotometry. The purpose of the study was to assess the distribution of nutrients as fertility indicator of marine life. The results showed that the phosphate concentration at surface layer of Subi, Bunguran, and Laut islands ranged from 0,04 to 0,22 µg A/l, 0,04 to 0,18 µg A/l and from 0,04 to 0,13 µg A/l, with average 0,11 µgA/l, 0,08 µgA/l and 0,07 µg A/l, respectivelly. Concentration of nitrate ranged from 0,31 to 4,90 µg A/l, 0,23 to 2,29 µg A/l and from 0,14 to 0,32 µg A/l with average of 90 µgA/l, 0,78 µg A/l and 0,22 µg A/l, respectivelly. Silicate concentration ranged from 2,97 to 5,35 µg A/l, 2,28 to 4,85 µg A/l and from 2,28 to 3,57 µg A/l with average 4,49 µgA/l, 3,62 µg A/l and 3,02 µg A/l,respectivelly. While phosphate concentration at bottom layer of Subi, Bunguran and Laut islands ranged from 0,04-0,27 µg A/l, 0,04-0,31 µg A/l and 0,09-0,22µg A/l,, with average 0,13 µgA/l, 0,13 µgA/l dan 0,12, µg A/l respectivelly. Concentration of nitrate ranged from 2,59-5,61µg A/l, 0,73-4,75 µg A/l and 2,06-3,03 µg A/l with average 2,85 µgA/l, 3,14 µg A/l and 2,49 µg A/ respectivelly. Silicate concentration in Subi, Bunguran and Laut Islands ranged from 4,46-6,21 µg A/l, 3,20-5,84 µg A/l dan 3,07-4,66 µg A/l with average 5,323,73 µgA/l, 4,74 µg A/l dan 3,73 µg A/l. In general concentration of those nutrient of Natuna Archipelago waters was still within the Standard Quality set by the Ministery of Environment (KMNLH).
Keywords: nutrient, phosphate, nitrate, silicate, Natuna Archipelago waters.
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
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http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7792
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
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oai:ojs.journal.ipb.ac.id:article/7793
2020-07-06T08:17:42Z
jurnalikt:ART
nmb a2200000Iu 4500
"121231 2012 eng "
2620-309X
2087-9423
dc
PREDICTION OF SEDIMENT TRANSPORT DUE TO IRREGULAR WAVE MOTION
Rachman, Taufiqur
Suntoyo, Suntoyo
In general, waves in coastal environments are irregular and have a random shape with a height and period that was not constant. The accuracy of sediment transport rate prediction is the most important stages in the study of morphology and coastal marine environments. In addition, the predictive model of coastal morphology is more efficient to use the bottom shear stress calculation approach for practical purposes rather than a more complex approach to the modeling of two phases. In this paper, the calculation of sediment transport was based on the bottom shear stress modelling purposed with data validation from the experimental results in the turbulent bottom boundary layer over rough bed under irregular waves. The new approach to estimate the bottom shear stress was based on combining velocity and acceleration terms. Furthermore, a new approach of the bottom shear stress was applied to formulate the sheet flow sediment transport rate for irregular waves by using the experimental data from Dibadjnia and Watanabe (1998) and the empirical formula was found.
Keywords: sediment transport, bottom shear stress, irregular waves
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7793
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7797
2020-07-06T08:17:42Z
jurnalikt:ART
nmb a2200000Iu 4500
"121231 2012 eng "
2620-309X
2087-9423
dc
WATER CONDITIONS OF CORAL REEFS WITH FORAMINIFERA BENTHIC AS BIOINDICATOR BASED FORAM INDEX IN BANGGAI ISLANDS, PROVINCE OF CENTRAL SULAWESI
Aulia, Khairunisa N.
Kasmara, Hikmat
Erawan, Tatang S.
Natsir, Suhartati M.
Research of water condition of coral reefs with foraminifera benthic as bioindicator based on FORAM Index (FI) in Banggai Islands, Province of Central Sulawesi was conducted by P2O-LIPI, Jakarta team in July 2011. This study was an exploratory research, conducted using survey methods. Sediment sampling was collected by a Van Veen Grab and measurement of other biotic and abiotic parameters was performed in 8 point sampling stations scattered in Banggai islands. Sediment samples were analyzed qualitatively and quantitatively to identify the types of foraminifera, determines FORAM Index, and find out the relationship between FORAM Index with condition of coral reefs views by coral cover. The results showed that foraminifera benthonic as bioindicator were 75 species, which belong to 33 genera. Water conditions of Banggai Islands by FORAM Index (FI) values ranged from 2.99 to 5.54. There was a fairly close relationship between FI with condition of coral reefs views by percentage coral cover in Banggai Islands.
Keywords : coral reefs, FORAM Index, foraminifera benthic, Banggai Islands
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7797
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7798
2020-07-06T08:17:42Z
jurnalikt:ART
nmb a2200000Iu 4500
"121231 2012 eng "
2620-309X
2087-9423
dc
ECOTOURISM DEVELOPMENT IN TANJUNG BALAI DISTRICT, NORTH SUMATERA: MANGROVE FOREST ECOLOGICAL FACTORS
Fahriansyah, Fahriansyah
Yoswaty, Dessy
District of Tanjungbalai characterized by mangrove ecosystem with mud and sandy beaches has the potential to be developed for marine ecotourism. One way to maintain the existence of mangrove forests from destruction or extinction is to develop the Tanjungbalai district to be an ecotourism area. The research objective was to determine the potential ecological mangrove forest to be developed as an ecotourism area. The study was conducted in August-November 2011, using survey methods. Primary data were obtained through direct observation in the village of Bagan Asahan, Asahan Mati and Sungai Apung on mangrove community structure (density value) and ecological potential. Data analyses for suitability tourism index were based on Yulianda (2007). The results showed that the mangrove forest in the Tanjungbalai District had a good density in the category of very dense (the value of 1778 ind./Ha), mainly consisting of Bruguiera gymnorrhiza, Xylocarpus granatum, Rhizophora mucronata and Rhizophora apiculata. Suitability tourism index in the Tanjungbalai District was very suitable (S1) for mangrove tourism development including Village of Bagan Asahan (score 65, IKW 85.53%), Asahan Mati (score 61, IKW 80.26%) and Asahan Apung (score of 61, IKW 80.26%). Ecologically, mangrove forests in the district of Tanjungbalai is potential to serve as a mangrove ecotourism area.
Keywords: mangrove forest, potential ecological, ecotourism development
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7798
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7799
2020-07-06T08:17:42Z
jurnalikt:ART
nmb a2200000Iu 4500
"121231 2012 eng "
2620-309X
2087-9423
dc
IDENTIFICATION OF SECONDARY METABOLITES COMPOUNDS, ANTIBACTERIAL AND ANTIOXIDANT ACTIVITIES ON THE METHANOL EXTRACT OF SEA CUCUMBER Stichopus hermanii
Rasyid, Abdullah
Identification of secondary metabolites, antibacterial and antioxidant activities assay of methanol extract of sea cucumber Stichopus hermanii were conducted from May to July 2011 at the Natural Products Laboratory, Research Center for Oceanography, Indonesian Institute of Sciences. Sea cucumber used in this study comes from South Lampung waters. Objective of the study was to get information of secondary metabolites, antibacterial and antioxidant activities of methanol extract of sea cucumber S. hermanii. The extraction method which used in this experiment was the maceration method using methanol solvent. Identification of secondary metabolites was performed through observing reaction of colors, precipitation, and foaming. Antibacterial and antioxidant activities of methanol extract from sea cucumber were tested using agar diffusion method and reducing of free radicals 1.1-Diphenyl-2-Picrylhydrazyl (DPPH) respectively. The results showed that secondary metabolites identified in the methanol extract of sea cucumber S. hermanii were saponin and steroids. Both secondary metabolites had antibacterial activities against Staphylococcus aureus, Vibrio eltor and Bacilus subtilis. The analysis of antioxidant activity showed that the IC50 value of methanol extract of sea cucumber S. hermanii was about 65.08 ppm. It indicated that S. hermanii is having potency as antibacterial and antioxidant.
Keywords: antibacterial, antioxidants, sea cucumber Stichopus hermanii, secondary metabolites
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7799
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7800
2020-07-06T08:17:42Z
jurnalikt:ART
nmb a2200000Iu 4500
"121231 2012 eng "
2620-309X
2087-9423
dc
INDONESIAN THROUGHFLOW TRANSPORT VARIATIONS AND OCEANOGRAPHIC’S PARAMETER IN TIMOR SEAS AS AN INDICATION OF ENSO EVENTS
Safitri, M.
Cahyarini, S. Y.
Putri, M. R.
Variation of Indonesian Throughflow transport, salinity, and temperature at surface level of Timor Seas monthly, seasonal, and annual mean scale was studied using the datasets provided by IRI/LDEO Climate Data Library i.e Simple Ocean Data Assimilation (SODA) for the salinity. The period data used in this study was 1995-2004, ERSST for the temperature. The Indonesian Thourghflow transport was obtained from Hautala et al. (2001). Result of this study showed there was influence of monsoon and ENSO on oceanographic parameters. During the South East (SE) monsoon, an emptiness on the surface water occurred in Timor Seas due to the easterly wind, which causes the upwelling. The results was also shown that during the SE monsoon the average temperature was 26.84oC, salinity was 34.35, and Indonesian Throughflow transpor was -0.34 Sv. While during the North Western (NW) monsoon the average temperature was 29.6 oC, salinity was 34.22, and the Indonesian Throughflow transport was -0.27 Sv. The negative value (-) means that the flow toward the Indian Ocean. In addition, based on temporal correlation between Indonesian Throughflow transport and NINO 3.4 index was found that the annual mean variability increases (-0.18 Sv) during La Niña period and decreased (-0.13 Sv) during period El Niño. These indicated that ENSO phenomena influenced the transport across the Equatorial Pacific east-west.
Keywords: Indonesian throughflow, salinity, temperature, SODA, Monsoon, ENSO, Timor Seas.
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
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http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7800
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7801
2020-07-06T08:17:48Z
jurnalikt:ART
nmb a2200000Iu 4500
"120701 2012 eng "
2620-309X
2087-9423
dc
A CONCEPTUAL MODEL ANALYSIS OF SST INFLUENCE ON MARINE BIOTA IN THE SOUTH JAVA SEA
Sulaiman, Albert
Hendiarti, Nani
Hendiarti, Nani
We developed a conceptual coupled atmosphere-ocean-ecosystem model for the South Java seas to investigate interaction between marine biota and SST variability due to monsoon-forced. Ocean and atmosphere are represented by a box model for one dimensional water column. The equation of motions of the zonal wind stress and SST are represented in term of nonlinear oscillator model. Marine biota are represented by three components (nutrient, phytoplankton and zooplankton) of NPZ Edward-Brindley model. The marine ocean-atmosphere coupling mechanism is done through the absorption of blue light by phytoplankton. The system of nonlinear dynamical equation is solved by using Matlab ODE solvers. Monthly SST data is used to compare the model. Result showed that the period and amplitude of oscillation of SST and ecosystem component strongly depend on the parameter choice which describes the dynamical characteristic of the system. The SST and ecosystem variability will strongly correlate with monsoonal wind if we choose the parameter of light attenuation by water 0.2 m-1. Strong seasonal variations associated with monsoonal winds were observed for SST, phytoplankton and zooplankton concentration. On the other hand, the nutrient concentration shows a weak seasonal variation
Keywords: SST, NPZ, monsoon, delayed oscillator
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
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http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7801
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 4 No. 1 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
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oai:ojs.journal.ipb.ac.id:article/7802
2020-07-06T08:17:48Z
jurnalikt:ART
nmb a2200000Iu 4500
"120701 2012 eng "
2620-309X
2087-9423
dc
POTENTIAL ROLES OF BIOTIC FACTORS IN REGULATING ZOOPLANKTON COMMUNITY DYNAMICS IN JAKARTA BAY SHALLOW WATER COASTAL ECOSYSTEM
Rachman, Arief
Fitriya, Nurul
The dynamics in zooplankton abundance were regulated by changes in water physical-chemical parameters and interaction with biotic factors. In this research we examined the relationship between zooplankton community dynamic and important biotic factors, such as predation and food availability, in Jakarta bay. Plankton samplings were done in 10 sampling stations in Jakarta bay, from July to November 2009. Zooplankton samples were collected using horizontal towing method with NORPAC plankton net (mesh size 300 μm). Salinity, water depth, water temperature, and water transparency were measured. Phytoplankton samples were also collected with the same method as zooplankton, using Kitahara plankton net (mesh size 80 μm). Zooplankton taxas were grouped into two groups, the prey and predatory zooplankton. The results showed that there were two different patterns in zooplankton groups dynamic i.e., the single and double peak. The abundance peak in most zooplankton groups, such as copepods, cirripeds, luciferids, and tunicates, were induced by the high food availability during the phytoplankton bloom in August. The high abundance of prey zooplankton groups in August was responded by the predatory zooplankton groups, resulting in high abundance of predatory zooplankton in adjacent month. The high abundance of ctenophores and chordates (fish larvae) were suggested as the main factor for the low abundance of other zooplankton in September. Physical and chemical factors were not the regulating factors due to the stability of those factors during this research period. Thus we concluded that food availability and predator-prey interaction were the main factors which regulate zooplankton community dynamics in Jakarta bay.
Keywords: predator-prey interaction, zooplankton, abundance peak, food availability, phytoplankton bloom
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
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http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7802
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 4 No. 1 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7803
2020-07-06T08:17:48Z
jurnalikt:ART
nmb a2200000Iu 4500
"120701 2012 eng "
2620-309X
2087-9423
dc
CONDITIONS OF MARITIME METEOROLOGY AND OCEANOGRAPHY IN THE VICINITY OF KOTOK ISLAND, SERIBU ISLANDS: APRIL 2011
Lubis, Atika
Yosi, Mira
Meteorological data measurement by an Automatic Weather Station (AWS) were carried out at the pier of Kotok Island for East Monsoon period on April 2011 to obtain the changes phenomenon of maritime meteorological parameter and their correlation with the changes of oceanographic condition in shallow waters area and its surrounding. The measurement consists of surface wind parameter, air temperature, humidity, air pressure, and oceanographic data observations such as batimetry, tide, sea current, sea surface temperature, and salinity distributions. Result of maritime meteorological assessment obtained from previous reports (1980, 1998, and 2001) showed that the changes of the maximum air temperature were relatively significant. Furthermore, the air pressure data at the sea surface increased approximately 1.3 mBar. Nevertheless, other meteorological data seemed to be less significant in changes, but indicated a strong correlation with the pattern of tidal current and propagated waves to the shoreline. The changes of oceanographic parameter in the shallow water area were triggered the sedimentation processes, so that the coral reef growth might be decreased.
Keywords: Maritime meteorology, oceanographic parameter, flat coral reef
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7803
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 4 No. 1 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7804
2020-07-06T08:17:48Z
jurnalikt:ART
nmb a2200000Iu 4500
"120701 2012 eng "
2620-309X
2087-9423
dc
THE COMPOSITION OF SPECIES AND STRUCTURE OF SEAGRASS FISH COMMUNITY IN TANJUNG TIRAM – INNER AMBON BAY
Latuconsina, Husain
Nessa, M. Natsir
Rappe, Rohani Ambo
The study was conducted in March - May 2011 in the coastal waters of Tanjung Tiram – inner Ambon bay. The aims of the study were to determine the composition of species and structure of fish communities in seagrass beds ecosystems. Fish were collected every spring and neap tide for three month periode with a swept area method using beach seine. Fishes were collected as many as 6444 individuals representing 68 species from 29 families. Siganus canaliculatus was contributed up to 62.91% of the total individual fish found.The fish community structure was varied between spring and neap tide. Index of dominance was in low category, diversity in medium, and evenness in unstable conditions. Moreover, the results indicated that seagrass ecosystems in Tanjung Tiram (TAD) have an important role as spawning, nursery ground, and feeding ground. Therefore, management and conservation efforts are urgently needed to maintain the ecological role of seagrass ecosystems for the sustainability of the fish resources.
Keywords: Seagrass beds, fish community, tanjung tiram, inner Ambon Bay
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7804
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 4 No. 1 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
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oai:ojs.journal.ipb.ac.id:article/7805
2020-07-06T08:17:48Z
jurnalikt:ART
nmb a2200000Iu 4500
"120701 2012 eng "
2620-309X
2087-9423
dc
MEIOFAUNA (FORAMINIFERA) IN SEDIMENTS AND ITS RELATION TO WHITE SANDY BEACH OF SENGGIGI AND WATER CONDITION OFF WEST LOMBOK
Dewi, Kresna T.
Arifin, L.
Yuningsih, A.
Permanawati, Y.
A development of meiofaunal data (foraminifera) from offshore area of West Lombok was conducted on 20 marine sediment samples. The samples were taken out using a grab sampler in 1997. The purpose of this study was to apply the formula of Foraminiferal Index by Hallock et al. (2003). Another purpose of this study was to recognize its relation of white sands of Senggigi beach that was dominated by Shlumbergerella floresiana. The result of analysis showed that the value of Foraminiferal Index (FI) was varies between 1.22 and 9.81. The low value of FI (<2) was found at sites that were close to the coastal area. The values FI >2 and <4 occur at five stations that gave indication of limited environment for coral growth. Value of FI >4 that showed good water condition was found in an area surrounding small islands of Gili Trawangan, Gili Meno, Gili Air and southern part of the study area. Based on the identification of foraminiferal specimens, the occurrence of Shlumbergerella floresiana was not abundant as it was accumulated in Senggigi beach. This result showed that this species did not come from samples studied but might come from marine sediment adjacent to the Senggigi beach
Keywords: Benthic foraminifera, FORAM Index, west Lombok
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7805
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 4 No. 1 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
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oai:ojs.journal.ipb.ac.id:article/7806
2020-07-06T08:17:48Z
jurnalikt:ART
nmb a2200000Iu 4500
"120701 2012 eng "
2620-309X
2087-9423
dc
EFFECT ON DIETARY PROTEIN AND FEEDING RATE ON GROWTH OF TIGER GROUPER (Epinephelus fuscoguttatus) JUVENILE
Marzuqi, Muhammad
Astuti, Ni Wayan Widya
Suwirya, Ketut
The grouper fish culture was developed after its succesful seed production in hatchery well known. In grow-out culture grouper, the protein requirement and feeding rate have to know well in order to understand the effectiveness on feed utilization . The experiment was designed by factorial design with the first factor as 3 dietary protein (36%, 42%, 48%) and the second factor as 3 feeding rate ( 1,5%, 2,0%, 2,5%). Ten of juvenile tiger grouper (102, 51-102, 73 g of body weight) were stocked in 27 polycarbonate tanks with 400 l volume each. Each tank was equiped with aeration and flow-through water system. Fish was fed three time per day i.e. 08:00, 11:30 and 15:30 Central Indonesia Standard Time for 16 weeks. Every week was measured body weight, survival rate, and feed quantity. The parameter used in this experiment were weight gain, spesific growth rate, feed efficiency and survival rate. The results of the experiment showed that the combination of protein level (36%, 42%, 48%) with feed ratio (1.5%, 2.0%, 2.5%) gave response on growth, weight gain and survival rate. Combination dietary protein level of 48% and feed ratio 1.5% gave higher weight gain and survival rate with values of 104.05 ± 5.89% and 96.67 ± 5.57 %, respectively.
Keywords: Dietary protein and feeding rate , growth, tiger grouper (Epinephelus fuscoguttatus)
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7806
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 4 No. 1 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
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oai:ojs.journal.ipb.ac.id:article/7807
2020-07-06T08:17:47Z
jurnalikt:ART
nmb a2200000Iu 4500
"120701 2012 eng "
2620-309X
2087-9423
dc
INFLUENCES OF UPWELLING DURATION AND INTENSITY BASED ON SEA SURFACE TEMPERATURE ANOMALY TOWARD PRIMARY PRODUCTIVITY VARIABILITY IN INDONESIAN WATERS
Kemili, Putri
Putri, Mutiara R.
The existence of upwelling generally increases waters productivity. However, the influence of upwelling could be different based on location and time. The difference of upwelling duration and intensity (strength) can affect the variability of primary productivity in Indonesian waters. The estimation of primary productivity during the period of January 2000 to December 2007 was conducted using Carbon-based Production Model (CbPM). Sea Surface Temperatures (SST) Anomaly data on the same period was used as parameter to determine the upwelling conditions. The study locations were west coast of Sumatra, south waters of East Java to East Nusa Tenggara, Banda Sea, Gulf of Bone, Maluku Sea and Halmahera Sea. The results showed that in the south of East Java and Banda Sea have upwelling with longer duration (3–4 months) and higher intensity (decrease in temperature reached >2°C below average), the primary productivity was higher than other locations. Halmahera Sea showed the existence of upwelling only at certain time when El Niño occurred, while Gulf of Bone and Maluku Sea showed the occurrence of upwelling during southeast season only with 2–3 months of duration and vary intensity, which shown with the decrease in temperature ranging from 0,5–1,8oC below average. El-Niño and dipole mode in Indonesia waters generally caused longer duration and stronger intensity of upwelling producing more productivity than normal years.
Keywords: Upwelling, Primary Productivity, Carbon-based Production Model
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7807
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 4 No. 1 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
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oai:ojs.journal.ipb.ac.id:article/7808
2020-07-06T08:17:47Z
jurnalikt:ART
nmb a2200000Iu 4500
"120701 2012 eng "
2620-309X
2087-9423
dc
CULTURE OF EMPEROR SNAPPER Lutjanus sebae
Melianawati, Regina
Aryati, Restiana Wisnu
Emperor snapper Lutjanus sebae is one of marine fishery commodities with high economic value, therefore capture rate of this fish is very high. To maintain its sustainability in nature, the culture of this species should be done in proper manner to support their conservation. This study was aimed to determine the culture technology of emperor snapper L. sebae. The eggs for this study was taken from wild broodstocks that have been domesticated in concrete rearing tank. Larval rearing was done in 500 liter polyethylene tank placed in hatchery. Phytoplankton Nannochloropsis oculata was used during larval rearing period. Larvae was fed with zooplanktons such as rotifer Brachionus rotundiformis and copepod Tisbe holothuriae in the beginning of rearing and artemia starting in day 16. Observed parameters were absorption of endogenous energy, preferrence of food, larval growth and survival rate. The result indicated that total length of newly hatched larvae were 2,44-2,63 mm, while yolk sac and oil globule were 179x10-3 - 183 x10-3 mm3 and 0,66x10-3 - 0,67x10-3 mm3, respectively. Yolk sac was absorbed at 60 hours after hatching, while oil globule almost totally absorbed at 80 hours after hatching. Live food rotifers were dominantly preferred by larvae until 10 days old, while copepods and artemia were preferred after 12 and 16 days. Larval rearing period was 22-29 days at water temperature 28.5-30.0°C. Survival rate of larvae were between 1.5 until 2.1%, while juveniles were 84.00-100.00%.
Keywords: Emperor snapper, L. sebae, culture technology
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7808
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 4 No. 1 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
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oai:ojs.journal.ipb.ac.id:article/7809
2020-07-06T08:17:47Z
jurnalikt:ART
nmb a2200000Iu 4500
"120701 2012 eng "
2620-309X
2087-9423
dc
REPRODUCTION ASPECTS OF THE YELLOWFIN TUNA (Thunnus albacares)
Andamari, Retno
Hutapea, Jhon Haryanto
Prisantoso, Budi Iskandar
Tuna is one of the important fishery commodities in Indonesia, including tuna caught by longliners in Indian Ocean. The most popular of tuna is yellowfin tuna (Thunnus albacares). Currently, the production of tuna based on the capture fisheries, therefore, in order to preserve its sustainability, the understanding of the biological and reproduction aspect is required. Research on the biological reproduction of this species was conducted at Gondol Research Institute for Mariculture. Samples of female gonad were collected from Indian Ocean tuna longliners during April to July 2009 from the processing companies within Benoa Port. Result of the histological analysis on 128 female gonads showed that majority of gonads were at the early development level and the only 16 gonads have reached at the mature level. The analysis of the oocyte development showed the asynchronous, indicating that yellowfin tuna is a multiple spawner.
Keywords: yellowfin tuna, gonad, asynchronous
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7809
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 4 No. 1 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7810
2020-07-06T08:17:47Z
jurnalikt:ART
nmb a2200000Iu 4500
"120701 2012 eng "
2620-309X
2087-9423
dc
ABUNDANCE OF DIATOM AT THE GUMILAMO AND MAGALIHO ISLAND, NORTH HALMAHERA
Astuti, Rina Puji
Imanto, Philip Teguh
Sumiarsa, Gede S.
Observation on abundance of diatom has been conducted in Gumilamo-Magaliho waters, North Halmahera. The aims of this study were to identify and analyze daily fluctuations of diatom abundance also analyze the biological indices in the plankton in that waters and . Sampling was conducted at three stations representing the strait, mangrove areas and estuary. Plankton were collected using a plankton net no.25. Sampling was carried out for 24 hours with six hour interval. Identification and counting of cells using a microscope with 400x magnification. The results showed that seven genera of diatoms were found: Chaetoceros sp. with the highest of cells abundance (5.061 cells/L), successively followed by Nitzschia sp. (611 cells/L), Thalassionema sp. (569 cells/L), Skeletonema sp. (446 cells/L), Coscinodiscus sp. (176 cells/L), Navicula sp. (40 cells/L) and Amphora sp. (11 cells/L). At station I and II showed that the maximum abundance occurred at 6 am, and the minimum abundance occurred at 6 pm. At station III the maximum abundance occurred at midnight and a minimum abundance occurred at noon. Diatoms showed different daily fluctuations at different time and stations. The supporting diversity index value of medium, low uniformity, and no dominance factor causing the Gumilamo-Magaliho waters can be developed for aquaculture.
Keywords: diatom, diatom abundance
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7810
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 4 No. 1 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7811
2020-07-06T08:17:46Z
jurnalikt:ART
nmb a2200000Iu 4500
"120701 2012 eng "
2620-309X
2087-9423
dc
SPAWNING AND LARVAL DEVELOPMENT DOG CONCH (Strombus turturella)
Dody, Safar
Dog conch (Strombus turturella) is considered one of fishery commodities in Bangka Belitung Islands. This conch is often exploited and result in their populations are increasingly threatened. The aim of study to observe the reproduction and larval development of dog conch were studied under laboratory conditions. For the treatment of spawning the dog conch were placed in spawning tanks with a capacity of 1 ton. Stimulation of spawning is done by replacing the water in the tank as much as 90% every 24 hours until the eggs released by females. Spawning was preceded by copulation and fertilization occurs inside the female's body.The results showed that the first egg cell divides into two cells after two hours of spawning. Then each cell continues to divide into four cells to become multicellular and reach the gastrula stage after 48 hours. Free swimming larval phase for four days and then settle down along with the formation of the first shell. The larvae will grow up to 5 mm shell length for 20 days.
Keywords: Dog conch, Strombus turturella, spawning, larva development
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7811
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 4 No. 1 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7814
2020-07-06T08:17:46Z
jurnalikt:ART
nmb a2200000Iu 4500
"120701 2012 eng "
2620-309X
2087-9423
dc
ABUNDANCE AND DIVERSITY OF ECHINODERM IN PARI ISLAND, SERIBU ISLANDS
Supono, Supono
Arbi, Ucu Yanu
Pari Island is one of the island in the Seribu Islands region. Abundance of echinoderms in Pari Island waters has been observed since 1969. In this research, data of echinoderms was collected on March 2011 applying quadratic transect method 1 x 1 m2, as well as freely collection methods using snorkel and scuba equipment. Thirteen individuals of echinoderms were collected during the study, one species (Archaster typicus) was found by quadratic transect method and 12 species of echinoderms by freely collection methods. The density of starfish Archaster typicus at the sites was between 2.1 to 4.3 individual/m2.
Keywords: Echinodermata, distribution, abundance, density, Pari Island, Seribu Islands
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7814
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 4 No. 1 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7815
2020-07-06T08:17:46Z
jurnalikt:ART
nmb a2200000Iu 4500
"120701 2012 eng "
2620-309X
2087-9423
dc
VARIABILITY OF CHLOROPHYLL-A CONCENTRATION AND SEA SURFACE TEMPERATURE OF NATUNA WATERS
Nababan, Bisman
Simamora, Kristina
Variability of chlorophyll-a concentration and sea surface temperature (SST) in Natuna waters were analyzed using satellite data Sea-viewing Wide Field-of-view Sensor (SeaWiFS) and the National Oceanic and Atmospheric Administration-Advanced Very High Resolution Radiometer (NOAA-AVHRR). SeaWiFS data with a resolution of 9×9 km2 and AVHRR with a resolution of 4×4 km2 were the monthly average data downloaded from NASA website. Chlorophyll-a concentrations and SST were estimated using OC4v4 and MCSST algorithms. In general, the concentration of chlorophyll-a in Natuna waters ranged between 0.11-4.92 mg/m3 with an average of 0.56 mg/m3 during the west season and 0.09-2.93 mg/m3 with an average of 0.66 mg/m3 during the east season. Chlorophyll-a concentrations were relatively high seen in coastal areas, especially around the mouth of the Kapuas, Musi, and Batang Hari rivers allegedly caused by the high nutrient intake from the mainland. SST variability in Natuna waters ranged from 23.46-30.88 °C during the west season and tended to be lower than that the east season (27.91-31.95 °C). In addition, the SST values tended to be lower in the offshore than that inshore. During the west season (Nov-Feb) and the transitional season (Apr) in the years of Elnino Southern Oscillation (ENSO), the concentration of chlorophyll-a and the SST in Natuna waters was generally higher than that in non-ENSO years. The results of wind analyses showed that ENSO caused the change of direction and speed of wind from its normal conditions.
Keywords: Sea surface temperature, chlorophyll-a, Natuna waters, ENSO, SeaWiFS, AVHRR
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7815
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 4 No. 1 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7816
2020-07-06T08:17:45Z
jurnalikt:ART
nmb a2200000Iu 4500
"120701 2012 eng "
2620-309X
2087-9423
dc
FISIOLOGY ADAPTATION OF SANDY ANEMONE (Heteractis malu) EXPOSED TO ELEVATED TEMPERATURES: LABORATORY CONDITION
Zamani, Neviaty Putri
Sandy anemone (Heteractis malu), belongs to Phylum Cnidaria, physiologically is very close to coral stone, which was a major component of coral reef ecosystems. As coral stone, Heteractis malu also has symbiotic algae (Zooxanthella). Physiologically, the alga symbiotic relationship of coral stone is almost similar with Heteractis malu. Maintaining Heteractis malu in the laboratory is relativly easier compared to that of coral stone. Advantages of the Heteractis malu vs. stone coral, its body is not covered by limestone makingit easier in processing analyses. The response of the anemone to stress is expected similar with coral stone. This research aims to analyze the response and adaptation of Heteractis malu to the temperature increase of 1 °C and 2 °C of the normal temperature (28 °C). The impact of temperature increases on Heteractis malu did not significantly affect the density of zooxanthellae, however, there was a significant increase of mitotic index. In addition, during a recovery process, Heteractis malu immune system did not show a significant increase based on its mitotic index results tended to decrease during the second phase of stress treatment.
Keywords: Adaptation, sandy anemone (Heteractis malu), temperature increase,, zooxanthellae
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7816
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 4 No. 1 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7817
2020-07-06T08:17:45Z
jurnalikt:ART
nmb a2200000Iu 4500
"120701 2012 eng "
2620-309X
2087-9423
dc
MARINE ENVIRONMENTAL VULNERABILITY OF EACH PROVINCE IN INDONESIA
Wibowo, Adi
Interaction between mainland and ocean are not balance. That means condition in mainland will higher affect the ocean, but not vice versa. Indonesia as a tropical island country has very long beaches and many rivers flow into the sea. The increased population in each province will have an impact on increasing contaminant into the river, so those are will cause the contaminant into the sea increasing. The problem statement is at what level of the marine environmental vulnerability in each province? Using methods of spatial analysis those find the spatial pattern of the marine environmental vulnerabilities in Indonesia. Level of the marine environmental vulnerability is generated based on numbers of regency along the coast line, including the total of population and population growth in each province and the number of rivers along the coast line. Conclusion in this research is province with the very high level of the marine environmental vulnerability is eleventh provinces, fifteenth provinces with high level, five provinces with moderate level, and two provinces with the lowest level. The province with very high level is caused by variation combination from the high number of regency along the coast line, including the highest number of population and population growth and the highest number of river. Such conditions may cause high vulnerability in some provinces such as Nanggroe Aceh Darusallam, Bangka Belitung, Kepulauan Riau, Banten, Bali, Nusa Tenggara Barat, Nusa Tenggara Timur, Sulawesi Utara, Sulawesi Tengah and Sulawesi Tenggara.
Keywords: Vulnerability, marine environmental, spatial analysis
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7817
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 4 No. 1 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7818
2020-07-06T08:17:51Z
jurnalikt:ART
nmb a2200000Iu 4500
"111231 2011 eng "
2620-309X
2087-9423
dc
COASTAL ENVIRONMENTAL VULNERABILITY ON COASTAL CITIES IN INDONESIA
Wibowo, Adi
Supriatna, Supriatna
Indonesia is known as a country with a strong in shipping, both nationally and internationally, which is shown by the number of coastal cities in Indonesia. Population growth in coastal cities in line with history of civilization who lived along the coast of Indonesia. Population growth led to expansion of the coastal cities in Indonesia, this increase affect land use change. Changes in land use, especially use of forest, will increase the use of setlement and agricultural caused an impact on increasing the contaminant throw into the river body or water body. Eventually cause contamination into the sea also increase, mainly going to affect the coastal environment around the coastal city. The objective is to find out coastal environmental vulnerability on coastal cities in Indonesia using spatial analysis method. First, count the number of population growth per year as index of population. Second, the number of land use change will be used as in index of change of land use. Third, count the number of river through the city and towards the sea coast, the results will show the index number of rivers. Index of population growth, land use change index and index number of rivers are combined and used to calculate the level of vulnerability of coastal environment around the coastal city spatially. The conclusion was that the higher the number of population growth, the higher of the landuse change and the most of rivers in the coastal city, that’s the higher the level of vulnerability of coastal environments.
Keywords: coastal city, land use, river, environmental vulnerability
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7818
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 3 No. 2 (2011): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7819
2020-07-06T08:17:51Z
jurnalikt:ART
nmb a2200000Iu 4500
"111231 2011 eng "
2620-309X
2087-9423
dc
BENTHIC FORAMINIFERAL ASSEMBLAGES IN NATUNA ISLANDS
Natsir, Suhartati M.
Subkhan, M.
Rubiman, Rubiman
Wibowo, Singgih P.A.
Natuna Islands cluster consisting of large and small islands which a very diverse ecosystems are occurred, including mangrove, seagrass and coral reefs. These waters can be a conducive habitat for various marine organisms, including foraminifera that can live in all types of waters. Collected foraminifera from a site reflect the relationships between species that are affected by ecological factors and the ability of these organisms adapt to their environment. These organisms are also used in the petroleum and mining line, and studied in the micropaleontology and palaeoecology. Therefore, the data on foraminifera in a marine community, including the waters of Natuna Islands are very important to support the fields. Sampling of this study was conducted in April 2011 in the waters off the coast until the ocean waters covering Bunguran, Subi Besar and Laut Islands. The benthic foraminifera that was collected as abundant in these three waters is symbiont bearing foraminifera, namely Amphistegina lessonii.
Keywords: Assemblage, foraminifera, benthic and Natuna
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7819
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 3 No. 2 (2011): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7820
2020-07-06T08:17:51Z
jurnalikt:ART
nmb a2200000Iu 4500
"111231 2011 eng "
2620-309X
2087-9423
dc
THE STUDY OF FERTILITY MARINE ECOSYSTEM OF SOUTHEAST SULAWESI BASED ON BACTERIOLOGICAL ASPECT
Kunarso, Djoko Hadi
The study of waters fertilization in Southeast Sulawesi include Flores Sea, Kabaena Strait, Muna Strait, Buton Strait and Tioro Strait based on bacteriological aspect was conducted on April–May 2006, using the Research Vessel Baruna Jaya VII with total stations 25. The aim of investigation was to find out the total numbers and pattern of distribution heterotrophic bacteria and productivity bacteria in the marine ecosystem of Southeast Sulawesi and related with waters fertilization. The analysis of heterotrophic bacteria was determined based on the Total Plate Count method, whereas bacterial productivity with Acridine Orange Direct Count method. The result indicated that the pattern of distribution and total numbers of heterotrophic bacteria at the surface layers varied between (10–10220)CFU x 10-1/ml with an average 940CFU x 10-1/ml. While at the bottom layer varied between (2–488)CFU x 10-1/ml with an average 91CFU x 10-1/ml. For the bacterial productivity in the form of Carbon biomass at the surface layers varied between (1.30– 5.84) x 10–7grC/m3 with an average 3.56 x 10–7grC/m3, at the bottom layer varied between (0.24–1.33) x 10–7grC/m3 with an average 0.64 x 10–7grC/m3. The result of numbers bacteria that in Southeast Sulawesi waters was lower than the Arafura Sea but still higher than the Aceh Sea. The fluctuation of numbers bacteria perhaps due to the factor of monsoon and environmental was influenced on the marine ecosystem. In general this paper conclude that the condition of marine ecosystem Southeast Sulawesi still relatively fertility.
Keywords: Fertility, heterotrophic bacteria, productivity bacteria, Southeast Sulawesi waters
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7820
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 3 No. 2 (2011): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7821
2020-07-06T08:17:50Z
jurnalikt:ART
nmb a2200000Iu 4500
"111231 2011 eng "
2620-309X
2087-9423
dc
THE EFFECT OF SEASONS AND DEPTHS ON GROWTH AND SURVIVAL RATE OF PEARL OYSTER (Pinctada maxima) IN KODEK BAY, NORTH LOMBOK
Hamzah, M. S.
Nababan, Bisman
Nababan, Bisman
The pearl oyster (Pinctada maxima) farming in the West Nusa Tenggara waters in particular and in other areas, complained to the mass mortality of pearl oysters saplings on shell width between 3-4 cm. The mass mortality, allegedly as a result of changing in environmental conditions and triggered by the shift in seasons. This research aimed to determine the effect of seasonal variations in water conditions at different depth levels on growth and survival of seedlings of pearl oysters conducted on March 23, 2008 to February 22, 2009. This research was very useful for pearl oyster farming in an effort to suppress the mass mortality rates based on the appropriate level of depth and seasons. Analysis of variance showed that the seasonal factors, the level of depth, and the interaction between both factors responded very significantly on pearl oyster seedling survival. The "significant difference test" showed that the interaction between season and level of 2 m depth provided the best result with 100% survival. The similar survival rate was also found at a depth of 8 m during the transition season I and the east season. For single factor (depth), the best result for growth and survival rate was found in 2 m deep during the transition season I.
Keywords: Oyster sapling, Pinctada maxima, growth, mortality, season, depth, Kodek Bay
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7821
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 3 No. 2 (2011): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7822
2020-07-06T08:17:50Z
jurnalikt:ART
nmb a2200000Iu 4500
"111231 2011 eng "
2620-309X
2087-9423
dc
MICROALGAE FOR CO2 REDUCTION AND WASTEWATER TREATMENT APPLICATION IN INDUSTRIAL AREA
Santoso, Arif Dwi
Darmawan, Rahmania A.
Susanto, Joko P.
The microalgae incorporated photobioreactor (PBR) is a highly efficient biological system for converting carbon dioxide (CO2) gases into biomass and treating wastewater. In this study, the freshwater microalgae Chlorella sp. was cultured in two unit photobioreactors which were connected to a boiler of dairy factory. The source of water for microalgae culture media (in the photobioreactors) are collected from the waste water treatment plant of the dairy factory itself. The objective of this microalgae photobioreactor activity were to reduce CO2, produce biomass and as a part of a waste water treatment in a dairy industry in Indonesia. Both photobioreactors were operated for 14 days culture interval in the semi continuous cultivation, with initial stocking rate of 2 x 105 cells/ml microalgae. Carbon dioxide concentration from the boiler stack was 10-11 % vol. The photobioreactors were injected with the specified CO2 concentration with flow rate of 2 l/min. and 1.5 l/min. The result showed that microalgae photobioreactors capability in CO2 absorption were 0.78 ± 0.25 and 0.92 ±0.36 g CO2/l media/day, respectively. Before and after utilized by the photobioreactors system, Nitrate and Phosphate concentration of the culture media (supplied from the waste water treatment plant) decreased from 3-4 mg/l to 0.05-0.1 mg/l. After 14 days cultivation, biomass concentration of microalgae which were injected with CO2 flow rate of 2 l/min. and 1.5 l/min. were 19 x 106 cells/ml and 15 x 106 cells/ml respectively. Results showed that microalgal photobioreactors operated in an industrial area could reduce CO2 concentration and produce biomass.
Keywords: photobioreactor (PBR), Chlorella sp., CO2 flue gas emissions, wastewater
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7822
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 3 No. 2 (2011): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7823
2020-07-06T08:17:50Z
jurnalikt:ART
nmb a2200000Iu 4500
"111231 2011 eng "
2620-309X
2087-9423
dc
CHARACTERISTIC OF PHYSICAL OCEANOGRAPHY IN EAST INDIAN OCEAN DURING POSITIVE PHASE OF INDIAN OCEAN DIPOLE (IOD) OF 1994/1995, 1997/1998, AND 2006/2007
Dipo, Pramudyo
Nurjaya, I Wayan
Syamsudin, Fadli
There is an inter-annual phenomenon in the Indian Ocean that occurs because of the interaction between atmosphere and ocean are known Indian Ocean Dipole (IOD). IOD is a bipolar structure that characterized by the difference of sea surface temperature to normal. The objectives of this study is to know the characteristic of physical oceanography in the eastern part of Indian Ocean during the formation phase, maturation phase and decay phases of positive IOD. The second objective was to determine the comparative characteristic of physical oceanography in the eastern Indian Ocean between the positive IOD in different years. The strengthening of the South Equatorial Current in transitional seasons I (March-May) followed by early cooling of the SST which is indicated by the formation phase of IOD. At the Southeast monsoon (June to August) and the beginning of the season transition II, there is a visible presence of upwelling in the south of Java, which is then further extends to the peak in September (maturation phase) and begin to disappear in October followed by warming of the SST on the East of Indian Ocean in November (decay phase).
Keywords: Indian Ocean Dipole, upwelling, Empirical Orthogonal Function (EOF) analysis, Eastern Indian Ocean
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7823
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 3 No. 2 (2011): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7824
2020-07-06T08:17:50Z
jurnalikt:ART
nmb a2200000Iu 4500
"111231 2011 eng "
2620-309X
2087-9423
dc
SCREENING OF INDONESIAN ORIGINAL BACTERIA VIBRIO SP AS A CAUSE OF SHRIMP DISEASES BASED ON 16S RIBOSOMAL DNA-TECHNIQUE
Felix, Feliatra
Nugroho, Titania T
Silalahi, Sila
Octavia, Yuslina
Shrimp disease caused by Vibrio sp is one of the main limiting factors in the increasing production in shrimp farming. This disease may kill the shrimp and cause high loss in shrimp culture in South East and East Asia. Samples of 10 individuals of a ten months cultured giant tiger prawn as well as 1 liter pond water and sea waters were collected from shrimp pond in Bengkalis Island, Sumatra. Samples of shrimps were also collected from Jepara shrimp pond in Central Java and they were selected by looking at their behavior and unhealthy physical characteristics. Amplification, rDNA 16s sequencing and bioinformatics analysis to identify Vibrio species were conducted in Biotech Center, BPPT Serpong Banten. The results of DNA sequencing of each bacteria isolate were compared to DNA sequence from international DNA bank database. Tracing were made by BLAST (Basic Local Alignment Search Tool) system accessed through the internet at http://www./ncbi.nlm.nih.gov/blast. The result of this study found seven strains of Vibrio sp bacteria where five of which (V. alginolyticus, V. parahaemolyticus, V. harveyi, V. shilonii and V. vulnificus) were already registered in the world gen bank with homolog level above 97%. Meanwhile, another two strain found in this study were not found in the list of world gen bank and therefore are considered as native Vibrio sp bacteria from Indonesia.
Keywords: Vibrio sp, bacteria, shrimp, aquaculture, fish disease
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7824
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 3 No. 2 (2011): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7825
2020-07-06T08:17:49Z
jurnalikt:ART
nmb a2200000Iu 4500
"111231 2011 eng "
2620-309X
2087-9423
dc
THE CHARACTERISTICS OF FORAMINIFERAL COMMUNITY IN JAKARTA BAY
Rositasari, Ricky
Jakarta bay is a unique water since there are hydrological and ecological complexity. In general, the feature of these water consist of three ecological elements that are estuaries, coral reefs and open sea. Each of these ecological element has different hydrology, ecology as well as biological characteristics. As a form of meiobenthic community, foraminifera has adaptive behavior to each of ecological element of the waters. The observation on foraminiferal adaptive behavior due to the hydrological condition of Jakarta Bay was conducted from 2003 to 2009. The result showed that foraminiferal distribution was tend to pursue to the degradation water conditions and constructed a specific pattern. Coastal water and estuary were found dominated by Ammonia beccarii, Calcarine and other larger benthic foraminifera were common in coral reef area, Elphidium and Nonion depressulum were common in open waters area. Based on the diversity indices, the foraminifera in Jakarta Bay has a higher diversity compared to foraminifera in the coastal water of Semarang and Cirebon and among the ecological element of Jakarta Bay, reef area has the highest diversity index than coastal nor open sea area.
Keywords: Foraminifera, Calcarine, Jakarta Bay
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7825
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 3 No. 2 (2011): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7826
2020-07-06T08:17:49Z
jurnalikt:ART
nmb a2200000Iu 4500
"111231 2011 eng "
2620-309X
2087-9423
dc
STUDY OF SHORELINE CHANGES AT JENEBERANG RIVER DELTA, MAKASSAR
Sakka, Sakka
Purba, Mulia
Nurjaya, I Wayan
Pawitan, Hidayat
Siregar, Vincentius P.
The study of shoreline changes during 1990 - 2008 in the delta of the River Jeneberang, Makassar was conducted by evaluating sediment transport into and out of a cell. Longshore sediment transport was computed by considering the influence of heights and angles of the breaking waves. Results of calculation of sediment transport showed that the dominant of sediment transport was to the north during the arrival of the southwest and west waves, and to the south when the wave coming from the northwest. Comparison between shore profiles resulting from model and coastline satellite imagery showed similarity. The difference between the two tend to be occurred at the head land part of the shoreline. This was due to complexity of coastal dynamic at the area. The results of the 19 years shoreline simulation showed that there was a tendency of abrasion at the upsteam head land part as the wave energy tend to converge and accretion at the bay part as the wave energy tend to diverge. Abrasion mainly occurred at Tanjung Bunga (head land) where the coast retreat 181.1 m. Accretion occur in the bay area (Tanjung Merdeka) where the coast advance to the sea for about 59.8 m. The shoreline tend to be stable when the profile was straight such as Barombong Coast.
Keywords: abrasion, accretion, sediment transport, shoreline changes.
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
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http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7826
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 3 No. 2 (2011): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7827
2020-07-06T08:17:49Z
jurnalikt:ART
nmb a2200000Iu 4500
"111231 2011 eng "
2620-309X
2087-9423
dc
SEA LEVEL VARIATION AND GEOSTROPHIC CURRENT OF THE SUNDA STRAIT BASED ON TIDAL AND WIND DATA IN YEAR 2008
Oktavia, Resni
Pariwono, John Iskandar
Manurung, Parluhutan
Sea level variation from four tide-gauge data in the Sunda Strait, Indonesia, in the year 2008 has been studied by using Wavelet 1 D Daubechius 1 level 5 type and Fast Fourier Transform methods. The hourly sea level variation in April and November (representing transitional seasonal conditions) is approximately +0.49 m; whereas in January (representing Northwest Monsoon condition) and July (representing Southeast Monsoon condition) can reach up to -0.48 m. In 2008, sea level variation in the Sunda Strait is mainly influenced by the monsoon. Results from this study show that there are at least three phenomena of sea level variations in the Sunda Strait, namely (1) seasonal variation (periodicity between 4-6 months) where it is believed influenced by the Java Sea; (2) intra-seasonal (periodicity between 1-3 months), which is more influenced by the Indian Ocean; and (3) tidal forcing (periodicity between 14-17 days, suggesting fortnightly tidal forces) which propagates from the Indian Ocean into the Sunda Strait. Result from surface geostrophic approximation calculation suggests that during Southeast Monsoon (June-August), monthly mean current flows southwestwardly towards the Indian Ocean with a velocity of 0.14-0.16 m/s. Whereas during Northwest monsoon (December-February), current flows northeastwardly towards the Java Sea with a velocity of 0.14-0.17 m/s. Furthermore, on the daily time scale, tidal current in the Sunda Strait flows into the Java Sea (Indian Ocean) during high tide (low tide) with a velocity ranging from 0.51 to 0.72 m/s (0.48 to 0.51 m/s).
Keywords: sea level variation, geostrophic approximation, tides, monsoon, Sunda Strait
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7827
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 3 No. 2 (2011): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7829
2020-07-06T08:17:49Z
jurnalikt:ART
nmb a2200000Iu 4500
"111231 2011 eng "
2620-309X
2087-9423
dc
MORPHOLOGY AND CELL BIOMASS OF SPONGE Aaptos aaptos AND
Ismet, Meutia Samira
Soedharma, Dedi
Effendi, Hefni
Aaptos aaptos and Petrosia sp. sponges are known for their ability to produce potential marine bioactive compound. As a metazoan animal with simple body structure, the morphology and it association with symbiont-bacteria could influence their bioactive compound both type and activity, as much as their habitat adaptation. In order to determine morphology and its cell biomass of Aaptos aaptos dan Petrosia sp., samples were taken from the West Pari Island, at 7 m depth. Preserved samples (in 4% formaldehyde) were examined using a histological mounting and centrifugation method to separate the cells fraction of sponge’s tissues. A. aaptos sponge has a soft body structure with 55.9% skeleton-forming fraction, 14.2% sponge cell fraction and 29.9% bacteria fraction. Meanwhile, Petrosia sp. sponge has a rigid body with dominant skeleton-forming fraction (68.6%), and lesser sponge cell and bacteria associated (19.7% and 11.7%, respectively).
Keywords: A. aaptos, Petrosia sp, morphology, cell biomass
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7829
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 3 No. 2 (2011): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7830
2020-07-06T08:12:57Z
jurnalikt:ART
nmb a2200000Iu 4500
"110701 2011 eng "
2620-309X
2087-9423
dc
STUDY COMPONENTS OF SHALLOW WATER TIDE (OVER AND COMPOUND TIDES) 1 DIMENSIONAL CHANNEL MODEL BY USING VARIATIONAL DATA ASSIMILATION METHOD
Sudjono, Evie H.
Setiawan, A.
Hadi, S.
Ningsih, N. S.
Shallow water tides are very important to improve accuracy of tidal predictions. It is used by port interest, sea transportation, fishing industry, coastal engineering, etc. Simulation of shallow water tides was obtained from harmonic analysis of 1 dimensional channel model (12 grid) by using variational data assimilation (grid 3 and 8). Two partial tides with angular frequencies σ1 = 1,4x10-4 and σ2 = 1,6x10-4 rad/sec and amplitude A1 = 1x10-8 and A2 = 0,5x10-8 meters are used for defining external forcing in the model domain. When inspecting the amplitudes of both partial tides σ1 and σ2 and some of their dominant over- and compound tides (σ3 = 2σ1-σ2 and σ4 = 3σ1), in general the “to be corrected” solution can be improved significantly. Root mean square (rms) error of tidal constituent σ1 between the “reference” and the “to be corrected” without data assimilation is 0,1075 m/sec, and for σ2 is 0,0440 m/sec, respectively. On the other hand, the harmonic analysis of the phase of tidal constituent σ1 showed a good result (root mean square = 0.0000 m/s) and for σ2 (root mean square = 0.0002 m/s).
Keywords: shallow water tides, data assimilation, harmonic analysis.
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
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http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7830
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 3 No. 1 (2011): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7831
2020-07-06T08:12:57Z
jurnalikt:ART
nmb a2200000Iu 4500
"110701 2011 eng "
2620-309X
2087-9423
dc
POTENTIAL ENERGY OF OCEAN CURRENT FOR ELECTRIC POWER GENERATIONIN COASTAL AREAS OF EAST FLORES, NTT
Yuningsih, Ai
Masduki, Achmad
The electrical energy is one of the important needs for coastal communities particularly in small islands that has not reached by national electricity network. In order to fulfill this particular electricity needs, we do variety diversification efforts, such as the utilization of the ocean currents. The purpose of this survey is to recognize the morphology of seafloor and characteristic of hydro-oceanography as a fixed reference location in using the current energy. The study area is in the Larantuka Strait between Flores and Adonara islands which is part of the Flores Strait, East Nusatenggara Province. The methods of this study are current measurements, tidal and meteorological parameter observations, condition of coastal morphology and seafloor of the study area. The result show that, the location for turbine position is in area with relatively gentle slope morphology at a 20 meters water depth and it is close to local community. Based on the analysis of ADCP mobile current measurement, the minimum current velocity is 0.004 m/sec and maximum 3.68 m/sec. Whereas, from the ADCP static measurements the current velocity is from 0.002 m/sec to 2.83 m/sec. This condition is closely related to the semi-diurnal tide type in the study area, with two pairs of flood and web events within 24 hours. Therefore, the results of ocean current energy analysis indicate that the study area is very potential for using as a power plant location.
Keywords: potential energy of ocean currents, power plants, energy diversification, Larantuka Strait, East Flores
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
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http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7831
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 3 No. 1 (2011): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7832
2020-07-06T08:12:57Z
jurnalikt:ART
nmb a2200000Iu 4500
"110630 2011 eng "
2620-309X
2087-9423
dc
MARINE SEDIMENT CHARACTERISTICS AT KARIMUN JAVA SEA BASED ON STRATIGRAPHIC PROFILE ANALYSIS, TOTAL SUSPENDED SOLID (TSS) AND GRAIN-SIZE ANALYSIS (GRANULOMETRY)
Suryantini, Suryantini
Ismanto, Aris
Aji, Indarta Kuncoro
Saputri, Dwi Fajar
Helfinalis, Helfinalis
A sedimentology survey was conducted during “Pelayaran Kebangsaan” research activities with a marine vessel of "Baruna Jaya VIII" in Karimun Java Sea. The objectives of the research were to determine the characteristics of marine water and its sediment, which are important control for coral reef growth in the study area. The survey acquired samples of Total Suspended Sediment (TSS) and gravity coring. Several analyses were then carried out on those samples; TSS analysis to determine the amount of suspended sediments in sea water that reflect the water quality for marine ecology, stratigraphic profile and sediment thickness pattern analyses to determine the sources of sediment, and grain-size analysis based on granulometry to determine deposition energy and grain-size distribution in the area. Those analyses were both conducted on-board Baruna Jaya VIII research vessel and P2O LIPI laboratory in Jakarta. The results showed that in Java Sea nearby Karimun Java Islands, the sediment supply came from the surrounding islands. Two sedimentary units were found in this area. The first units has thickness of tens centimeter from sea bed surface. It is characterized by grayish green color, grain size variation from clay to coarse sand, soft or low density and abundance with shells. The second unit is located beneath the first one, indicated by sharp contact. It is characterized by brownish color, higher density resembling the density of rock, less compacted and can be broken easily by hand, with occasionally thin carbon lenses or remnant of decomposed vegetation, and less shell or fossil At sea surface, TSS distribution shows value between 0.018 and 0.034 gr/l, with average of 0.025 gr/l, whereas at near bottom sea, it ranges between 0.024 and 0.030 gr/l, with average value of 0.027 gr/l. The granulometry shows that more than 50% of sediment is characterized by the abundance of grain size greater than 3 phi. It suggest that sea water around Karimun Java Islands was clear and the current was relatively calm. These conditions were relatively stable for a long time span. Those sea characteristics were important for successful growth of coral reefs and its complementary marine biotas. However, further studies and researches based on chemical and physical characteristics of sea water, and plankton and microbiology variation and abundances are necessary to confirm those presuppositions.
Keywords: total suspended solid, gravity coring, stratigraphic profile, granulometry, Karimun Java Sea
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
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http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7832
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 3 No. 1 (2011): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7834
2020-07-06T08:12:57Z
jurnalikt:ART
nmb a2200000Iu 4500
"110701 2011 eng "
2620-309X
2087-9423
dc
COASTAL VULNERABILITY PREDICTION TO CLIMATE CHANGE: STUDY CASE IN CIREBON COASTAL LAND
Rositasari, Ricky
Setiawan, Wahyu B.
Supriadi, Indarto H.
Hasanuddin, Hasanuddin
Prayuda, Bayu
Coastal area is the most vulnerable area to climate change. Cirebon coastal land in Western Java, Indonesia is low-lying coastal area which is one of the potential areal for fish culture and farming. There are also major transportation facilities for western Java province to the whole area in the island (Java) through this area. As low-lying landscape, populated and developing city, Cirebon should be considered vulnerable to future sea level rise. Geomorphology, geo-electric and remote sensing study were conducted during 2008 and 2009 in coastal land of Cirebon. The result showed that most part of coastal area in Cirebon was eroded in various scales which vulnerable turn to worst. Sea water was penetrating throughout several kilometres inland. Valuation on various land-uses would project 1,295,071,755,150 rupiah/ha/year of loss while sea level were rose 0.8 meters that would inundate various land-uses i.e., Shrimp, fish and salt ponds, rice fields and settlement in the area.
Keywords: vulnerability, coastal, climate change, sea level rise
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
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http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7834
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 3 No. 1 (2011): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7835
2020-07-06T08:12:57Z
jurnalikt:ART
nmb a2200000Iu 4500
"110701 2011 eng "
2620-309X
2087-9423
dc
TOXICITY TEST OF EXTRACTS OF THE FOUR SEA CUCUMBER (FAMILY HOLOTHURIIDAE) FROM EAST PENJALIRAN ISLAND, SERIBU ISLANDS, JAKARTA BASED ON THE BRINE SHRIMP LETHALITY TEST (BSLT)
Albuntana, Arum
Yasman, Yasman
Wardhana, Wisnu
Sea cucumber is one of the marine bioactive compounds resources . The properties of the bioactive compound are biologically shown by their functions as anticancer, antifungi, hemolytic, and immunomodulatoryt. The purpose of this research is to predict (determine) the toxicity level of the extracts of Actinopyga miliaris, Holothuria leucospilota, Bohadschia argus, and Bohadschia marmorata collected from Penjaliran Timur Island, Seribu Island National Park Jakarta. The method used in this research is Brine Shrimp Lethality Test (BSLT). The result of this research showed that all of the extract from those species are active in BSLT, indicated by LC50 values of less than 1000 μg/ml. Bohadcshia argus is highest active species indicated by LC50 value 69,254 μg/ml. Water fraction of H. leucospilota’s crude extract is the most active fraction indicated by LC50 50,968 μg/ml.
Keywords: Brine Shrimp Lethality Test, Crude Extract, Fractionation, Family Holothuriidae, Sea Cucumber
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7835
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 3 No. 1 (2011): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7836
2020-07-06T08:12:57Z
jurnalikt:ART
nmb a2200000Iu 4500
"110701 2011 eng "
2620-309X
2087-9423
dc
BACTERIA ASSOCIATED HOLOTHURIANS: THE KEY OF HABITAT PREFERENCE, DIET, AND FUNCTIO
Hatmanti, Ariani
Purwati, Pradina
An investigation of bacteria as holothurians’s feed carried out from May until June 2006 in Medane Bay and Kombal Bay, Lombok, Indonesia. The aims of this study are to know whether holothurians eat bacteria, to observe that bacteria are the key for holothurians’ habitat preference, and to understand the functions of bacteria in holothurians intestine. The results showed there are many kind of bacteria in the substrates and inside intestine of sea cucumber. There are no specificity in performance, species and number of bacteria which found in anterior or posterior of intestine, as well in their substrates. Therefore, the holothurians do not choose specific bacteria for their feed. Bacteria are the consequence of substrates ingested. Some of them can be microflora in holothurians intestine. Bacteria inside holothurians produce some enzymes such as protease, amylase and agarase. This function was proven by the increasing of Total Organic Matters (TOM) in their feces. This evidence supporting Wiedmeyer (1992) statement that sea cucumber adds organic matters in the sediment. So this also firm holothurians’ function in their habitat, as supplier for organic matters. The conclusion is that bacteria are eaten by holothurians by absorption, bacteria is not the key for microhabitat preference for holothurians, and inside the intestine of holothurians, digestion and degradation are the function of bacteria by producing their enzymes.
Keywords: bacteria, holothurians, microhabitat preference, function
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
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http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7836
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 3 No. 1 (2011): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7837
2020-07-06T08:12:57Z
jurnalikt:ART
nmb a2200000Iu 4500
"110701 2011 eng "
2620-309X
2087-9423
dc
SKIPJACK TUNA IN RELATION TO SEA SURFACE TEMPERATURE AND CHLOROPHYLL-A CONCENTRATION OF BONE BAY USING REMOTELY SENSED SATELLITE DATA
Zainuddin, Mukti
Skipjack tuna is an important species targeting by pole and line fishery in Bone Bay. The distribution and abundance of this species tended to aggregate to the preferred bio-physical environments. To describe the short term relationship between skipjack tuna and oceanographic conditions and to visualize the predicted high catch areas, remotely sensed satellite based-oceanographic sea surface temperature (SST) and chlorophyll-a together fisheries data were used. Results indicated that the highest skipjack CPUEs were mainly found in coastal areas of Palopo and Kolaka both in 2007 and in 2009 during the period of study. The high tuna concentrations corresponded well with chlorophyll-a of 0.15-0.40 mg mg-3 and SST of 29.0-31.5 °C. The preferred ranges provide a good indicator for initially detecting potential skipjack fishing grounds. This study suggested that thermal and chlorophyll fronts as well as upwelling may important mechanisms in explaining the temporal and spatial dynamics of skipjack tuna distribution and abundance in Bone Bay.
Keywords: skipjack tuna, potential fishing grounds, satellite images and fronts
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
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http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7837
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 3 No. 1 (2011): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7838
2020-07-06T08:12:57Z
jurnalikt:ART
nmb a2200000Iu 4500
"110701 2011 eng "
2620-309X
2087-9423
dc
MICROBIAL COMMUNITY DURING BIOREMEDIATION EXPERIMENTAL ON OIL SPILL IN COASTAL OF PARI ISLAND
Sutiknowati, Lies Indah
There is an information how to identify hydrocarbon degrading bacteria for bioremediation of marine oil spill. We have Bioremediation treatment for degradation of oil spill on Pari island and need two kind of experiment there are tanks experiment (sampling 0 to 90 days) and semi enclosed system (sampling 0 to 150 days). Biostimulation with nutrients (N and P) was done to analyze biodegradation of hydrocarbon compounds. Experiment design using fertilizer Super IB and Linstar will stimulate bacteria can degrade oil, n-alkane, and alkane as poly aromatic hydrocarbon. The bacteria communities were monitored and analyzed by Denaturing Gradient Gel Electrophoresis (DGGE) and Clone Library; oil chemistry was analyzed by Gas Chromatography Mass Spectrometry (GCMS). DNA (deoxyribonucleic acid) was extracted from colonies of bacteria and sequence determination of the 16S rDNA was amplified by primers U515f and U1492r. Strains had been sequence and had similarity about 90-99% to their closest taxa by homology Blast search and few of them suspected as new species. The results showed that fertilizers gave a significant effect on alkane, PAH and oil degradation in tanks experiment but not in the field test. Dominant of the specific bacteria on this experiment were Alcanivorax, Marinobacter and Prosthecochloris.
Keywords: Bioremediation, Biostimulation, DGGE, PAH, Pari Island
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7838
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 3 No. 1 (2011): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7839
2020-07-06T08:12:57Z
jurnalikt:ART
nmb a2200000Iu 4500
"110701 2011 eng "
2620-309X
2087-9423
dc
HEAVY METALS CONCENTRATIONS IN WATER, SEDIMENT AND BIOTA IN KELABAT BAY, BANGKA ISLAND
Arifin, Zainal
Kelabat Bay is a semi enclosed waters divided into two parts, i.e., outer part of Klabat bay facing the Natuna Sea (T Luar) and inner Kelabat bay surrounded by human activities and five river mouths (T Dalam). Study on metal concentrations on sediments and biota was carried out in March and July 2006. Water and sediment samples as well as biota were analyzed using Flame-Atomic Absorption Spectrophotmetry (Flame AAS). The result showed that concentrations of the dissolved heavy metals were generally low with ranged as follows, Pb(1,0 – 26,0 μg L-1), Cd(<0,1– 3,0 μg L-1 ), Cu(1–2,0 μg L-1) dan Zn(1,0–4,0 μg L-1). An average of metal concentrations in sediments were as follows, Pb (11,46 mg kg-1), Cd (0,10 mg kg-1), Cu (2,50 mg kg-1) and Zn(13,64 mg kg-1). Average concentrations of Pb, Cu dan Zn in T Dalam was about double compared to that of sediments of T Luar. However, no significant different was observed between west and south-east monsoon. In contrast, concentrations of Cd in sediment was similar throughout Kelabat bay and influenced by seasons. Accumulation of metals by fishes were mostly lower compared to that of shellfishes. The snail Strombus canarium accumulated the highest of Pb and Cu, cockle Anadara sp was for Cd and Zn.
Keywords: heavy metals, water, sediment, biota, temporal variation, Kelabat Bay
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7839
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 3 No. 1 (2011): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7840
2020-07-06T08:12:57Z
jurnalikt:ART
nmb a2200000Iu 4500
"110701 2011 eng "
2620-309X
2087-9423
dc
INCREASE OF THE THERMOCLINE LAYER DUE TO TSUNAMI 2004 IN NANGRO ACEH DARUSSALAM WATERS
Hadikusumah, Hadikusumah
Lekalete, J. D.
Research of physical oceanographic conditions post-tsunami was carried out and subsequently compared with the pre-tsunami 1998. Measurement of suhu, salinity and light transmission was conducted by CTDSBE911pls Model. Results showed that the flow in the Straits of Malacca flowed into the northwest and turned back into the Strait of Bengal and the next rotation into the flow of waters along the west coast of Nangro Aceh Darusalam (NAD). The mainstream off coast NAD in the Indian Ocean flowed to the northwest. Upper thermocline layer (17 m to 50 m) moved upward in 2005 and 2006 compared with previous data 1998 (90 m to 125 m). The moving upward thermocline in 2006 was allegedly due to the influence of Indian Ocean Dipole (IOD) positive. This requires further verification through long-term data collection to determine the monthly and annual variations, which will be compared with previous research. Light transmission (Tx) in 2005 from the surface to near the bottom (water column) was found lower than the year 1998 and 2006. This result was allegedly caused by resuspension from the seabed by energy turbulent produced by the tsunami. Heat content between 5 to 65 m depth in 2005 was higher than in 1998 and 2006. The higher heat content during the year of 2005 (post tsunami) was caused by friction due to the influence of tsunami energy, which predominantly found in the mixed layer depth. Type of water masses in the study area was a mixing between the local water mass, Malacca Strait Water (MSA), Bay of Bengal Water (BBW) under the influence of Arab Waters (AW), and the Indian Deep Water (IDW).
Keywords: current, thermocline, heat content, watermass type, and Nangro Aceh Darusalam
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7840
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 3 No. 1 (2011): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7842
2020-07-06T08:12:57Z
jurnalikt:ART
nmb a2200000Iu 4500
"101231 2010 eng "
2620-309X
2087-9423
dc
THE EFFECT OF CALCIUM AND PHOSPHOROUS ON GROWTH, FEED EFFICIENCY, MINERAL CONTENT AND BODY COMPOSITION OF BROWN MARBLED GROUPER (Epinephelus fuscoguttatus) JUVENILE
Zainuddin, Zainuddin
The objectives of this study were to know concentration of calcium (Ca) and posphorus (P) in feed for growth, feed efficiency, proximate composition of the body and mineral content of brown marbled grouper juvenile. The study was conducted in the Center for Brackiswater Aquaculture Development, Takalar with randomized completed design 6 x 3 with the treatment of Ca and P supplement in feed i.e., (A) the supplement of 0 g/kg Ca and 0 g/kg P, (B) the supplement of 6 g/kg Ca and 0 g/kg P, (C) the supplement of 0 g/kg Ca and 6 g/kg P, (D) the supplement of 6 g/kg Ca and 6 g/kg P, (E) the supplement of 12 g/kg Ca and 6 g/kg P, and (F) the supplement of 18 g/kg Ca and 6 g/kg P. The result showed that P supplement with doses of 6 g/kg and Ca of 0 g/kg in feed are significantly affects on relative growth, feed efficiency, proximate composition and mineral content of brown marbled grouper juvenile.
Keywords: growth, feed efficiency, proximate composition, brown marbled grouper juvenile
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7842
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 2 No. 2 (2010): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7845
2020-07-06T08:12:57Z
jurnalikt:ART
nmb a2200000Iu 4500
"101231 2010 eng "
2620-309X
2087-9423
dc
IDENTIFICATION OF ANEMONEFISHES (Amphiprioninae) AND THEIR SIMBIONT IN SPERMONDE ARCHIPELAGO, SOUTH SULAWESI
Yasir, Inayah
Syafiuddin, Syafiuddin
Sumarjito, Sumarjito
The study was conducted in June 2009 around the waters of Samalona, Barranglompo, Koedingareng Keke, Badi, Langkai and Kapoposang islands, representing four zones of Spermonde Archipelago of South Sulawesi. Seven species of anemonefish from two genera were found living symbiotically with 7 species of sea anemones. Those fishes were Amphiprion clarkii, A. melanopus, A. ocellaris, A. sandaracinos, A. perideraion, A. polymnus and Premnas biaculeatus. Three of these fishes were simbiotically found with one species of anemone (specific symbiont), and one species of fish was symbiotically found with five species of anemones.
Keywords: Amphiprioninae, Spermonde Archipelago, anemone symbiont
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7845
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 2 No. 2 (2010): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7847
2020-07-06T08:12:57Z
jurnalikt:ART
nmb a2200000Iu 4500
"101231 2010 eng "
2620-309X
2087-9423
dc
REPRODUCTION PERFORMANCE OF HUMPBACK GROUPER (Cromileptes altivelis) FROM WILD BROODSTOCK (F-0), FIRST GENERATION BROODSTOCK (F-1), AND SECOND GENERATION BROODSTOCK (F-2)
Tridjoko, Tridjoko
Grouper seeding technology still relies on the broodstock from the ocean, eventhough, the existence of the broodstock is rare and difficult to obtain. The broodstock takes a long time to mature and spawn. Therefore, to anticipate the scarcity humpback grouper from wild, it is important to produce broodfish from aquaculture. This study was aimed to know the reproduction performance of humpback grouper wild broodstock F-0, first generation broodstock (F-1) and second generation broodstock (F-2). The cultured of humback grouper broodstock used three tanks 75 m3 in volume (tank I, II and tank III). Tank I: reared 35 fishes broodstock F-0. Tank II and tank III for reared each 50 fishes F-1 and F-2 broodstock. Food for broodstock from the wild (F-0) was given from fresh trash fish, squid, and added vitamin mixture, vitamin C and vitamin E. Meanwhhile, food given to F-1 and F-2 broodstock was a commercial dry pellet (PG 9-10) that contains following nutrients: protein content of 43%, min. fat of 9%, ash content of 13%, fiber levels of 2%, and moisture content of 12%. Mixture of vitamin C and E were also added. The results showed that the humpback grouper F-0, F-1 and F-2 were cultured in 75 m3 concrete tank was successfully spawn with the fertilization rate of 87%, 78% and 45% respectively. This result proves that the broodstock from F-0 gaved the best results.
Keywords: Humpback grouper reproduction, wild broodstock (F-0), first generation (F-1), seccond generation (F-2)
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7847
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 2 No. 2 (2010): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
oai:ojs.journal.ipb.ac.id:article/7849
2020-07-06T08:12:57Z
jurnalikt:ART
nmb a2200000Iu 4500
"101231 2010 eng "
2620-309X
2087-9423
dc
DIFFERENT PERCENTAGE OF WATER EXCHANGE ON GROWTH OF CORAL TROUT GROUPER FINGERLING (Plectropomus leopardus)
Aslianti, Titiek
Coral trout grouper (Plectropomus leopardus) is the prospective aquaculture commodities with a high demand. Fingerling culture is the one of shortly rearing time methods for grow out in net-cages in order to produce continuously. Two hundred fishes with initial total length 16.6±0.5 cm and 72.2±7.6 g of body weight were stocked in each of three of concrete tanks of 4m3 seawater. Water replace as a treatment was applied i.e. A (200%/day), B (300%/day) and C (400%/day).respectively. Feeding frequency of pellet was done twice a day of about 3 - 5% of body weight. Survival and growth of fishes were monitored during two-month period. The result showed that the different percentage of water replace had a significant role in increasing the growth and survival rate of the fishes. Water replaced of 400% daily (treatment C) gave the best survival rate (97%) and growth performance (TL 21.61±0,54 cm; BW 156.84±1.05 g). In contrast, the treatment B (300%/day) and A (200%/day) resulted in a lower survival and growth , i.e. (SR 95.5%; TL 19.51±0.52 cm; BW 140.96±0.08 g) and A (SR 93%; TL 19.08±0.30 cm; BW 132.2±2.65 g)., respectively.
Keywords: Coral trout grouper, growth, survival rate, water exchange
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
2014-04-30 00:00:00
application/pdf
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/7849
Jurnal Ilmu dan Teknologi Kelautan Tropis; Vol. 2 No. 2 (2010): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
eng
Copyright (c)
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