Journal of Fisheries <p>The <em>Journal of Fisheries</em> is a double blind peer reviewed open access journal published by BdFISH that provides rapid publication of articles in all areas of fisheries science. The journal welcomes the submission of manuscripts that meet the general criteria of significance and scientific excellence. All issues (full) of the <a title="Journal of Fisheries" href="" target="_blank" rel="noopener">Journal of Fisheries</a> are also available on <a title="Journal of Fisheries also availabel on BdFISH Document" href="" target="_blank" rel="noopener">BdFISH Document</a>.</p> <p><strong>Journal of Fisheries at a glance</strong></p> <ul> <li class="show">ISSN: 2311-3111 (Online) and 2311-729X (Print)</li> <li class="show">Year of launching: December, 2013</li> <li class="show">Editor-in-Chief: Professor M Nazrul Islam</li> <li class="show">Journal policy: Open Access, Peer Reviewed, Online First!</li> <li class="show">Article publishing cost: Free of cost</li> <li class="show">Journal issues: 3 issues in a year (April, August, and December), accepted article is published online as Online First! and will be included in the contents of the upcoming issue</li> <li class="show">Journal operation financed by: BdFISH</li> <li class="show">Web: <a title="Journal of Fisheries" href="" target="_blank" rel="noopener"></a></li> </ul> <p>&nbsp;</p> BdFISH, Department of Fisheries, University of Rajshahi, Rajshahi 6205, Bangladesh en-US Journal of Fisheries 2311-729X Quality changes in sea grape, Caulerpa lentillifera at different brine concentrations <p>Sea grapes are among the seaweeds being commercialized in the Philippines. They are sold in fresh state, and are highly perishable. It is necessary to develop preservation techniques in order to lengthen its shelf life. This study aims to assess the physico-chemical, microbial and sensorial quality of sea grape <em>Caulerpa lentillifera</em> preserved in 0%, 5%, 10% and 15% brine concentrations. Results revealed that brining effectively extended the shelf life of <em>C. lentillifera</em> by inhibiting the growth of bacteria and maintaining the osmotic pressure between the product and the solution. Within the 10 days storage period, 10% and 15% were bacteriologically stable and more acceptable upon rehydration. Treatments 0% and 5% were not acceptable because it exceeded the bacterial limit set for fresh vegetables. The sensorial attributes were compromised and became less acceptable due to degradation through bacterial action. In terms of physico-chemical analysis, high salt concentration (15%) decreased chlorophyll and carotenoid content significantly due to shrinkage and water loss. Overall, this study proved that sea grapes in 10% brine solution can extend its shelf life.</p> Precious Dee H. Tolentino Jerson C. Sorio Copyright (c) 2021 Journal of Fisheries 2021-04-13 2021-04-13 9 1 91204 91204 Investigation on the effects of Inula viscosa L. on rainbow trout gonad cells induced by lipopolysaccharide <p>Fish cells have been accepted as an alternative to in vivo assay for inflammatory effects of therapeutic experimental systems. To reveal the anti-inflammatory effects of <em>Inula viscosa</em> (IV) fish cell line RTG-2, derived from the gonadal tissue of rainbow trout, was infected with lipopolysaccharide (LPS). Effective concentrations for different concentrations of LPS (1, 5, 10, 20 µM) and IN (1, 5, 10, 20 µg ml<sup>–1</sup>) were determined. While the 20 µM concentration of LPS, which was effectively selected from preliminary tests, caused 27% cell loss,&nbsp; the effective 1 µg ml<sup>–1</sup> concentration of IN caused 1.1% proliferation in the cells when compared to the control group. All pro-inflammatory parameters investigated in LPS-induced RTG-2 cells showed up-regulation, with the highest increase in TNF-α gene expression level (11.3 fold changes). Down-regulation was determined in the IN together with LPS administered group and IL-1β had the highest effect with 96%. IL-6 protein level decreased by LPS at a rate of 4% and IN together with LPS increased by 9%. The IN exhibited significant efficacy against inflammation caused by LPS. However, further studies are needed to determine pharmacological activity of <em>I. viscosa</em> in details.</p> Azime Küçükgül Altuğ Küçükgül Tülay Metin Korkmaz Copyright (c) 2021 Journal of Fisheries 2021-04-13 2021-04-13 9 1 91203 91203 Potential use of mud clam (Geloina coaxans) in producing sauce with papaya crude extraction as a protein hydrolysing agent <p>Mud clam (<em>Geloina coaxans</em>) are underutilised food source due to the lack of consumer preference in Sri Lanka. Hence, this study was conducted to produce clam sauce as a value added product using the muscle of mud clams by means of accelerated fermentation method. Specimens were collected from Tambalagam Bay, Sri Lanka. Shell length, height, inflation, total weight with shell and without shell were 6.3 ± 0.4 cm, 5.3 ± 0.3 cm, 3.5 ± 0.3 cm, 83.1 ± 13.4 g and 14.9 ± 1.3 g respectively. The extracted mean meat yield was 14.9 ± 1.3% per mud clam. Moisture, crude protein, crude lipid and ash (dry weight) content of raw meat were 80.45 ± 0.89%, 64.14 ± 0.96%, 3.55 ± 0.39% and 7.54 ± 0.61% respectively. Final sauce product shows liquid yield, energy value, <sup>0</sup>Brix value, pH, % NaCl, total nitrogen, moisture and ash content as 98.3 ± 5.5 ml 100g<sup>–1</sup>, 2124 ± 133 J g<sup>–1</sup>, 24.3 ± 0.9%, 5.02 ± 0.04, 14.53 ± 0.27%, 0.27 ± 0.01%, 74.06 ± 0.56% and 19.66 ± 1.99% respectively. The study concluded that the mud clam meat is a possible candidate as a raw material for the production of clam sauce.</p> Hitihami Mudiyanselage Sarath Mahinda Wijerathna Kumudu Radampola Hewa Waduge Cyril Copyright (c) 2021 Journal of Fisheries 2021-03-17 2021-03-17 9 1 91402 91402 Growth dependent changes in protein efficiency and amino acid composition in cultured meagre Argyrosomus regius <p>The goal of this research was to determine the growth dependent changes in protein efficiency and amino acid composition of the cultured meagre <em>Argyrosomus regius</em> (Asso, 1801). The research was carried in net cages in a private company (Gokce Off-shore Sist.) in the Aegean Sea. Meagre of an initial weight of 8.22 ± 0.13 g reached to 373.96 ± 15.65 g in 420 days of production period. Average protein efficiency rate, protein store rate and protein consumption values of cultured meagre were 1.05 ± 0.11%, 11.49 ± 2.98% and 56.67 ± 14.52 g respectively. The total amino acid values varied between 14.97 ± 0.14 and 18.87 ± 0.10 g 100g<sup>–1</sup>, the statistical difference among the study periods was significant (<em>p </em>&lt; 0.05). Most of the total essential (EAA), non-essential (NEAA), and branched‐chain amino acid values of cultured meagre were decreasing with increasing fish size but EAA/NEAA ratios were increasing. The findings of this study showed that the composition of amino acids and the consistency of meagre culture were adequate and appropriate for human consumption and nutrition.</p> Birol Baki Dilara Kaya Öztürk Murat Kerim Copyright (c) 2021 Journal of Fisheries 2021-02-23 2021-02-23 9 1 91202 91202 Length–weight relationship and condition factor of ten cyprinid fish species from the Caspian Sea, Urmia Lake and Persian Gulf basins of Iran <p>In this study, the length-weight relationships (LWRs) and condition factor (<em>K</em>) were estimated for 1334 specimens belonging to ten species including <em>Acanthobrama marmid</em>, <em>A. microlepis</em>, <em>A. urmianus</em>, <em>Romanogobio persus</em>, <em>Leuciscus aspius</em>, <em>Luciobarbus capito</em>, <em>L. mursa</em>, <em>L. caspius</em>, <em>Alburnus atropatenae</em> and <em>Petroleuciscus ulanus</em> from the Caspian Sea, Urmia Lake and Persian Gulf basins of Iran. The total length and weight of the individuals varied from 3.4 to 84.5 cm and 0.4 to 6600 g respectively. The values of the slope parameter (<em>b</em>) and condition factor ranged from 2.99 – 3.38 and 0.79 – 1.25 respectively. LWRs with high correlation coefficients were calculated for all species (<em>R<sup>2</sup></em> &gt; 0.95). Based on the results, the allometric growth pattern of the studied species were positive except for <em>L. aspius</em>, <em>L. capito</em>, <em>L. mursa</em> and <em>P. ulanus</em>. This study provides useful data regarding the LWRs and condition factor of ten fish species in Iranian inland waters that can be used in fisheries management, stock assessment and future studies.</p> Atta Mouludi-Saleh Soheil Eagderi Keivan Abbasi Seyed Mohammad Salavatian Copyright (c) 2021 Journal of Fisheries 2021-02-12 2021-02-12 9 1 91401 91401