Journal of Fisheries 2021-04-26T19:26:41+00:00 ABM Mohsin Open Journal Systems <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> Ichthyofauna of Gibe Sheleko National Park and some morphometric relationships of fish of the tributary rivers, Southern Ethiopia 2021-04-26T19:26:41+00:00 Sefi Mekonen Abera Hailu <p>Understanding of Ichthyofaunal diversity is a major gateway for the conservation of waterbodies in the world. Ethiopia has a rich Ichthyofaunal diversity, although they are poorly known. This study was carried out in two tributary rivers (Gibe and Wabe) of Gibe Sheleko National Park to investigate Ichthyofaunal diversity and morphometric characteristics of fish. By using monofilament gill-nets, fish were collected, identified and measured their morphometric. A total of 10 species were identified, dominated by <em>Synodontis schall</em>, followed by <em>Labeobarbus nedgia</em> and <em>Labeobarbus intermedius</em>. According to the Index of Relative Importance, <em>S. schall</em> was also first (49.13%), followed by <em>L. intermedius</em> (15.49%). Gibe River had a higher number of species than Wabe River. The Shannon Diversity Index in Gibe River was also higher (2.09) than Wabe (1.84) during the dry season, but lowest in the wet season (1.52 and 1.57 respectively). <em>Synodontis schall</em> had the largest girth, but <em>Clarias gariepinus</em> had the largest eye diameter and body weight. <em>Heterobranchus longifilis</em> was first in total, fork and standard body length. Generally, differences in sampling habitats and fishing effort might have contributed to discovered variants findings. Fishery development should be implemented in the Park to use the fish resource sustainably.</p> 2021-04-27T00:00:00+00:00 Copyright (c) 2021 Journal of Fisheries Population structure and shell dimension of the invasive veined whelk (Rapana venosa) 2021-04-26T19:19:23+00:00 Nazlı Kasapoğlu <p>The veined whelk (<em>Rapana venosa</em>) is a widely known invasive species in the Black Sea. This species exerts negative impacts on the Black Sea ecosystem including destruction of bivalve, mussel and oyster populations. This study aimed to examine population structure using the length-frequency distribution and shell dimensions of <em>R. venosa</em>, collected from the Black Sea. A total of 506 specimens were collected from the Trabzon Coast and classified into 6 age groups using the Bhattacharya method. The Von-Bertalanffy growth parameters were calculated as <em>L<sub>∞ </sub></em>= 10.29 cm, <em>k</em> = 0.09, <em>t<sub>0</sub></em> = 1.25 yr<sup>–1</sup>. The mortality and exploitation rates were estimated as total mortality <em>Z</em> = 0.51 yr<sup>–1</sup>, fishing mortality <em>F</em> = 0.31 yr<sup>–1</sup>, annual mortality <em>M</em> = 0.20 yr<sup>–1</sup> and exploitation rate <em>E</em> = 0.60 yr<sup>–1</sup>. This study will help understanding the growth of <em>R. venosa</em> and its management.</p> 2021-04-21T00:00:00+00:00 Copyright (c) 2021 Journal of Fisheries Investigation on the effects of Inula viscosa L. on rainbow trout gonad cells induced by lipopolysaccharide 2021-04-13T00:42:18+00:00 Azime Küçükgül Altuğ Küçükgül Tülay Metin Korkmaz <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> 2021-04-13T00:00:00+00:00 Copyright (c) 2021 Journal of Fisheries Quality changes in sea grape, Caulerpa lentillifera at different brine concentrations 2021-04-14T00:45:14+00:00 Precious Dee H. Tolentino Jerson C. Sorio <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> 2021-04-13T00:00:00+00:00 Copyright (c) 2021 Journal of Fisheries Potential use of mud clam (Geloina coaxans) in producing sauce with papaya crude extraction as a protein hydrolysing agent 2021-03-17T22:51:52+00:00 Hitihami Mudiyanselage Sarath Mahinda Wijerathna Kumudu Radampola Hewa Waduge Cyril <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> 2021-03-17T14:59:37+00:00 Copyright (c) 2021 Journal of Fisheries