Jurnal Akuakultur Indonesia http://journal.ipb.ac.id/index.php/jai <p>Jurnal Akuakultur Indonesia (JAI) is a scientific journal publishes empirical research and recent science development in aquaculture. JAI is published twice a year in January and July since 2002 by the Indonesian Society of Scientific Aquaculture (ISSA) in association with the Department of Aquaculture, Faculty of Fisheries and Marine Science, Bogor Agricultural University. JAI accepts manuscripts written in English and in Bahasa (Indonesian). JAI only processes submitted original script related to aquaculture and not being published by other publishers. JAI has been registered in some indexing tools like Directory of Open Access Journals (DOAJ), Indonesian BASE, Publication Index (IPI), Google Scholar, Portal Garuda, Mendeley, SINTA, and IPB repository.</p> <p>&nbsp;</p> <p>p-ISSN <a href="http://u.lipi.go.id/1180429182" target="_blank" rel="noopener">1412-5269</a>&nbsp; /&nbsp; e-ISSN <a href="http://u.lipi.go.id/1385091088" target="_blank" rel="noopener">2354-6700</a></p> ISSA en-US Jurnal Akuakultur Indonesia 1412-5269 <p><span>Authors who publish with this journal agree to the following terms:</span></p><br /><ol type="a"><ol type="a"><li>Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a <a href="http://creativecommons.org/licenses/by/3.0/" target="_new">Creative Commons Attribution License</a> that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.</li></ol></ol><br /><ol type="a"><ol type="a"><li>Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.</li></ol></ol><br /><ol type="a"><li>Authors are permitted and encouraged to post their <a title="Click to Continue &gt; by trivia games" href="/index.php/jai/about/submissions#onlineSubmissions">work online<img src="http://cdncache-a.akamaihd.net/items/it/img/arrow-10x10.png" alt="" /></a> (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See <a href="http://opcit.eprints.org/oacitation-biblio.html" target="_new">The Effect of Open Access</a>).</li></ol> Characterization of fermentation liquid from mangrove leaves Avicennia marina and its inhibitory potential for bacterium causing ice-ice disease http://journal.ipb.ac.id/index.php/jai/article/view/29256 <p><strong>ABSTRACT</strong></p> <p>&nbsp;</p> <p>Fermentation liquid from mangrove leaves <em>Avicennia marina</em> contains microorganisms, nutrients, and secondary metabolites. This study aimed to identify bacteria and the compounds in fermentation liquid of mangrove leaves <em>A. marina</em> and measured their inhibitory capacity against pathogenic bacteria <em>Stenotrophomonas maltophilia</em> which causes ice-ice disease in seaweed. Molecular analysis which aimed the 16S rRNA gene showed that the bacteria in fermentation liquid consisted of eight types of <em>Bacillus</em>, <em>Bacillus subtilis</em> MSAR-01, <em>Bacillus megaterium</em> MSAR-02, <em>Bacillus firmus</em> MSAR-03, <em>Bacillus thuringiensis</em> MSAR-04, <em>Bacillus subterranerus</em> MSAR-05, <em>Bacillus vietnamensis</em> MSAR-06, <em>Bacillus</em> sp. MSAR-07,<em> Bacillus circulans</em> MSAR-08, with the best inhibitory power indicated by <em>B. subtilis</em> MSAR-01, <em>B. vietnamensis</em> MSAR-06, and <em>Bacillus</em> sp. MSAR-07. The administration of lactic acid, bacteriocin, total fermentation liquid, and supernatant as much as 15 mL produce inhibition to <em>S. maltophilia</em> indicated better result &nbsp;than using one or a combination of several types of bacterial isolates. The inhibition of single bacterial enriched fermentation and supernatant liquids was better than bacterial combination enrichment.</p> <p>&nbsp;</p> <p>Keywords: <em>Avicennia marina</em>, fermentation, ice-ice, mangrove</p> Samsu Adi Rahman Sukenda Widanarni Alimuddin Julie Ekasari Copyright (c) 2020 Jurnal Akuakultur Indonesia 2020-01-24 2020-01-24 19 1 1 9 10.19027/jai.19.1.1-9 Reproductive and growth performances in female giant freshwater prawn following inhibition of gonadal maturation using dopamine and medroxyprogesterone hormone http://journal.ipb.ac.id/index.php/jai/article/view/29710 <p><strong>A</strong><strong>BSTRACT</strong></p> <p>One of the main problem in giant river prawn (GFP) culture is early gonadal maturation in female resulting a reduced growth performance. This problem cause economic losses. When GFP at gonadal maturation, somatic growth will be inhibited because energy is used for reproduction. A factorial experimental design using two factors, namely dopamine and medroxyprogesterone, with each factor consist of three levels was applied. Three dopamine levels were 0, 10-5 mol/shrimp, and 10-10 mol/shrimp, while the medroxyprogesterone levels were 0, 75 mg/1.5 mL/bodyweight, and 150 mg/3 mL/bodyweight with a density 15 individual/tank. The utilization of dopamine and medroxyprogesterone in GFP (initial bodyweight : 11.27 ± 0.97 g) through injection at the third periopod was done three times at week 0, 2nd, and 4th with two weeks interval. The results showed that hormone inhibitor treatments affected both growth and reproductive performances in female GFP. The treated individuals showed a lower gonadal maturity indicator values and faster growth rate than control. Gonadal maturity, as shown by gonad histology, in all treatments were lower (previtelogenic and vitellogenic stages) than that in control which is in mature stage. Estradiol concentration premix dopamine 10-10 mol/shrimp and medroxyprogesterone 150 mg/3 mL/bodyweight treatments are lower than control. In conclusion, dopamine and medroxyprogesterone administration could suppres GSI and gonad development, and also increase growth rate.</p> <p>Keywords: Macrobrachium rosenbergii, dopamine, medroxyprogesterone, gonad development, growth.</p> Megawati Wijaya Agus Oman Sudrajat Imron Copyright (c) 2020 Jurnal Akuakultur Indonesia 2020-02-18 2020-02-18 19 1 10 18 10.19027/jai.19.1.10-18