Jurnal Teknologi Perikanan dan Kelautan

SIMPANAN KARBON DI VEGETASI MANGROVE DESA SUNGAI NIBUNG, KABUPATEN TULANG BAWANG, PROVINSI LAMPUNG

2023-09-29T14:32:47+07:00

Increasing the concentration of CO₂ in the atmosphere produces the greenhouse gas effect and cause global warming. Blue carbon is the ability of coastal and marine ecosystems to absorb CO₂ effectively through photosynthesis which is stored in the form of biomass and sediment. The purpose of this research is to analyze carbon storage in the mangrove vegetation of Sungai Nibung Village. The research was conducted from June to August 2022. The research location was in Sungai Nibung Village, Tulang Bawang Regency, Lampung Province. Measurements of mangrove carbon were conducted in mangrove stands, necromass, and litter using the non-destructive sampling method. The results showed that carbon stored in sediments was greater than carbon stored in the mangrove stands, necromass, and litter. The highest carbon stored in sediments was in coarse clay size sediment because coarse clay can store high nutrients.

PERSEPSI NELAYAN TERHADAP RUMPON PORTABLE DI PELABUHAN PERIKANAN PANTAI LARANGAN, KABUPATEN TEGAL

2023-09-29T14:32:44+07:00

Karang Jeruk waters is a coral reef ecosystem conservation area located in Larangan Hamlet (Munjungagung Village, Tegal Regency in Central Java Province) which has good fishery resources. The most common fishing gear in Karang Jeruk waters are anchovy seine net and mini purse seine. The use of portable FAD technology is expected to create fishing areas and anticipate the occurrence of degradation of fishing areas. The purpose of this activity was to determine fishermen's perceptions of the use of portable FAD innovations in Karang Jeruk waters, Tegal Regency. The research method was carried out using interview methods and experimental fishing activities. Fishermen's perception data was conducted by interview using a questionnaire to 50 fishermen in anchovy seine net and mini purse seine, with accidental sampling of respondents. All fisherman perceptions of portable FADs were grouped into 3 categories, most fishermen have a high level perception of 38 people (76%), a medium level of 11 people (22%), and a low level of only 1 person (2%). The use of portable FADs hads advantages including: high catch productivity, various types of catch, and a large number of fish fit for catching categories.

IDENTIFIKASI TUTUPAN DAN KONDISI PERAIRAN PADA EKOSISTEM LAMUN DI PULAU TIDUNG KECIL

2023-09-29T14:32:39+07:00

One of the flowering plants that live underwater and grow in shallow marine waters and estuaries is seagrass. Seagrass ecosystems are very important because they play a supporting role in fisheries and are related to other coastal ecosystems such as coral reefs and mangroves. There are several factors that can affect seagrass growth such as temperature, salinity, depth, and current. This research aimed to identify the cover and water conditions in seagrass ecosystems on Small Tidung Island. The method used in determining the percentage of seagrass cover was the quadrant transect method, namely, drawing a line drawn straight over the seagrass field. The quadrant itself was part of the frame which had the shape of an equilateral rectangle which was then placed on the line. Based on the results of research on the island of Small Tidung Island in 3 stations and 5 plots, showed an overall average seagrass cover of 30.4%, and the quality conditions of temperature, salinity, depth, and current there were good for seagrass growth.

KESELAMATAN KERJA PADA BONGKAR MUAT KAPAL MINI PURSE SEINE 10 GT DI PELABUHAN PERIKANAN LEMPASING

2023-09-29T14:32:37+07:00

Lempasing Coastal Fishing Port (PPP) is the largest fishing port in Lampung. One of the most widely operated vessels in Lempasing Port is the mini purse seine. There are various activities at Lempasing fishing Port, namely landing (unloading) and marketing of fish. Loading and unloading activities at the Lempasing Fishing Port are the main activities, after the ship docks at the dock. Accidents that occur in loading and unloading activities can cause losses in the form of delays in activities. The purposes of this research were to identify activities and potential hazards of loading and unloading activities for mini purse seine vessels, analyze the accident rate and risk opportunities that may occur, provide recommendations/alternative solutions, and determine work accident control measures. The survey method descriptive HTA (Hierachy Task Analysis) was used in this research. The results showed that there were 47 accident risks in loading and unloading activities, 36 (77%) moderate risk activities, 5 (11%) two activities (4%) severe risk, and 4 (9%) fatal risk activities. The greatest risk of work accidents occurred in unloading activities. This was because there were around 20 individuals involved, and the activities carried out were quite heavy.

TEKNIK MIKROENKAPSULASI PEPTON IKAN MULTISPESIES BUSUK MENGGUNAKAN PERBEDAAN KECEPATAN HOMOGENISASI

2023-09-29T14:32:34+07:00

Peptone is hygroscopic so it needs to be protected by microencapsulation technique. The research aimed to determine the effect of different homogenization speeds on fish peptone microencapsulation using speed levels of 16,000 rpm, 22,000 rpm, 28,000 rpm, and their application as a bacterial medium. The best globule size stability was made by using homogenization speed of 22,000 rpm. The result analysis of rendement was 41.76%. Peptone microencapsulate had contents of 8.21% moisture, 1.69% ash, 0.64% fat, and 15.5% protein, respectively. The value of solubility test was 75.5%, the nitrogen total 1.656%, salt content 1.53%, reduction sugar 23.78%, and pH 6.013. The value of white degree was 95.91%. Amino acids of fish peptone microencapsulate contained 15 kinds of amino acids. The dominant amino acids on the fish peptone microencapsulate were alanine and glutamic acid.

EFEKTIVITAS ATRAKTOR CUMI-CUMI DI LOMBOK TIMUR, NUSA TENGGARA BARAT

2023-09-29T14:32:28+07:00

One of the technologies that can support an increase in the population of squid in nature is squid attractor technology. Squid attractors can function as a new ecosystem and can collect the squid. The purpose of this study is to determine a characteristics of the waters where the squid attractor was installed, to determine the construction design of the squid attractor, and to determine the effectiveness of the attractor installation on squid catches. Fishing experimental research methods and literature studies were used in this study. The results shows that the sea surface temperature in the waters of Labuhan Haji and Tajung Luar ranged from 27.10-28.29°C and 28.15-28.79°C, respectively, the bottom conditions of the Labuhan Haji waters were muddy sand and Tanjung Luar was rocky sand. Design of the attractor was in the form of a tube with a diameter of 60 cm, a length of 120 cm, and black in color. Installing an attractor effectively collected the squid.

POTRET PERIKANAN TANGKAP KOTA DUMAI SEJAK 2017 HINGGA 2021

2023-09-29T14:32:25+07:00

The purpose of this research is to describe a condition of capture fisheries production in the city of Dumai from 2017 to 2021 and to analyze the characteristics of fishing units in that city. This research used annual secondary data (2017-2021) number of fishermen, number of boats, number of fishing gear, capture fisheries production, and capture fisheries production value obtained from the Central Bureau of Statistics of the City of Dumai. To obtain a more comprehensive study, primary data was obtained through interviews and observations. Data analysis used was the method of content analysis. The results shows that fishery production data fluctuated. In 2017 the production data was 930,815 kg and decreased significantly in 2018 (564,766 kg), then it increases every year slowly. Fishing activities in Dumai City were spread over 5 districts out of 7 districts, namely Medang Kampai, Sungai Sembilan, West Dumai, East Dumai, and Dumai City. The characteristics of Dumai City’s capture fisheries are small-scale or traditional capture fisheries. Fishermen in the city of Dumai are dominated by a main fishermen. The vessels used consisted of several types, namely boat 5-30 GT, boat with outboard engine sized 5 GT, boat without engine and fisherman without boat. The fishing gear used consisted of active, passive and static fishing gear.

KECERAHAN IKAN GUPPY (Poecilia reticulata) DENGAN PEMBERIAN TEPUNG BUNGA MARIGOLD (Tagetas erecta) PADA PAKAN KOMERSIL

2023-09-29T14:32:21+07:00

The purpose of this study is to determine the effect of giving marigold powder on commercial feed on the brightness of the color of guppies. This research was conducted for 50 days, with an experimental method using a Completely Randomized Design (CRD) consisting of 4 treatments and 3 replications, namely: P1 (control), P2 (0.5% marigold flower flour), P3 (marigold flower flour 1%), dan P4 (marigold powder 1.5%). The research began with the manufacture of marigold flower flour, mixed it with pelleted feed according to the treatment. The feed was further biologically tested on cultured guppies. Parameters measured were absolute weight, absolute length, specific growth rate, feed conversion ratio, survival, carotenoid content, and color brightness. Data were analyzed using ANOVA and continued with Duncan's test. The results showed that the addition of marigold powder to commercial feed increased the brightness of the color of guppies and affected survival (SR) (P<0.05), but had no effect on growth and feed conversion ratio (FCR) (P>0.05). The addition of marigold powder to commercial feed of 1.5% (P4) can increase guppy carotenoids by 13.80 µmol/g, supported by a value of redness (a*) of 31.37, yellowness (b*) of 37.68, lightness (L*) of 28.25, hue of 58.15, and a survival rate of 93%±0.06.

PENGARUH KONSENTRASI RUMPUT LAUT DAN DAUN KELOR TERHADAP KUALITAS MASKER GEL

2023-09-29T14:32:18+07:00

Many seaweed and herbal can be used as a source of antioxidant in cosmetic industries. Peel off gel mask is one of beauty cosmetics for facial skin care. The main ingredients of peel off gel mask are antioxidant compounds, namely T. conoides seaweed and M. oleifera L. Moringa leaves. Antioxidant compounds can inhibit free radicals on the skin and are able to treat and rejuvenate facial skin. The purpose of the study is to determine the effect of adding different ratios between T. conoides seaweed and M. oleifera L on the physical and chemical quality of peel off gel masks and to determine the best ratio. This study was an experimental laboratory with one factor. The treatments were used different ratios of T. conoides: M. oleifera L, i.e. R0 (0:0), R1 (1:3), R2 (1:1), and R3 (3:1) with three times test. The results showed that irritation test from 2.6 to 3.8 indicates that it did not cause irritation to the skin; pH value was ranged from 5.28-6.09; viscosity value were 8,193.33-29,416.66 cps; value of drying time were 9-23.33 minutes; antioxidant activity value IC₅₀ were 9,514.35-99,683.20 mg/L; and hedonic test were 4.73-8.20. It can be concluded that the addition of a different ratio T. conoides and M. oleifera L has an effect on decreasing pH, viscosity value, increasing the value of antioxidant activity of peel off gel mask compounds, irritation value, hedonic, and drying time. The best ratio was in the R1 treatment (T. conoides 5% and M. oleifera L 15%).

AKUMULASI LOGAM BERAT TEMBAGA DAN TIMBAL PADA MANGROVE Rhizopora mucronata DI KARANGSONG, INDRAMAYU

2023-09-29T14:32:12+07:00

Mangrove has many ecological functions, one of them is to absorb, transport and store substances including toxic materials. This research aim is to analyze the concentration of Cu and Pb in root, leave, and substrat of mangrove Rhizopora mucronata and its bioaccumulation level. The concentration of Cu found in sediment exceed standar quality by Reseau National d’Observation (RNO), which means the sediment has been contaminated by Cu. The content of Cu in the rootsand leaves of mangrove is greater than Pb, so does the highest level of bioconcentration factor (BCF) was reached by BCF Pb in root at 1.3116 while BCF Cu in roots at 0.5609. This indicates that the potency of accumulation of roots is much higher than the leaves. The highest Translocation Factor (TF) was attained by Pb which is 0.4075 and the lowest is 0.3341 in Cu. Metal translocation from roots to leaves for essential metals (Cu) is lower than in non-essential metals (Pb), it shows that the mangrove use Cu for metabolic activity and growth. The ability of mangrove in accumulating this metals are still low in category according to concentration factor index.