Short Description: Fisheries and Aquaculture Journal (FAJ) publishes peer-reviewed research articles, reviews and research notes. FAJ is an OPEN ACCESS journal publishing quality research in Fish and Shellfish Nutrition, Health, Genetics, Genomics, Ecology, Biodiversity, Population/Conservation Biology, and Oceanography.
E-ISSN: 2150-3508
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Publisher: AstonJournals - Longdom Publishing
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City: Brussels
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Country: Belgium
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Research Article
Oct 30, 2023
A few samples were collected from the three different regions of the selected experimental water body i.e., Shahpura Lake, India. These sites are classified as S1-inlet; S2-centre region and S3-outlet region of the water body, from all these sites, samples were collected during the three different seasons viz., summer, monsoon and winter by using the appropriate methodology to assessed the water parameters like pH, TDS, and conductivity of the lake. In the current study researcher also focused on some selected heavy metals such Pb, Cd, Mn and Cu from the different sampling sites. Here we got the highly significant results (P<0.001) from all the regions of the water body. Due to this, from the present experimental study we came to a conclusion that due to the increased concentration of these heavy metals leads to the sever toxicity in the aquatic fauna of the Lake which directly leads to the various hazardous impact on the human population through the various anthropogenic hindrances in the food chain of the humans. Various minimizing measures were also initiated by the concern authorities to overcome this toxicity up to some extent.
Research Article
Oct 04, 2023
This study was conducted to evaluate the growth and profitability of Clarias gariepinus fingerlings fed a diet containing Mucuna Seed Meal (MSM). Fingerlings (300) weighing 6.58 ± 1.42 g were randomly stocked in triplicate in 12 hapas (0.5 m × 0.5 m × 1 m) and fed for 56 days on four isoprotein diets at a feeding rate of 10-4%. The first triplicate was fed the control diet (D0) containing 0% MSM, while the other three were fed the experimental diets D30, D40 and D50 in which processed MSM was included at 30%, 40% and 50%. Control fisheries were performed bi-weekly for total counting and taken measurements. The results obtained indicate that growth performance and body composition of fish fed the experimental diets were significantly improved depending to the inclusion level compared to control diet. Diet D50 induced a Weight Gain (WG) of 93. 89 ± 0.17 g, a Specific Growth Rate (SGR) of 4.87 ± 0.01%/day, and a Feed Conversion Ratio (FCR) of 0. 97 ± 0. 02; with significant variations of 26.22 ± 1.15%, 10.27 ± 0.56%, and 24.23 ± 1.30% respectively compared to WG (69.28 ± 0.97 g), SGR (4.36 ± 0.02%/day), and FCR (1.28 ± 0.01) obtained with diet D0. In addition, the whole body composition of pre-adult fish produced with diet D50 was significantly different compared to D0, with nutrient retention (protein=53.92 ± 0.12%, lipid=32.85 ± 0.14%, ash=40.29 ± 0.17 and energy=31.50 ± 0.13%) significantly higher compared to D0 (protein=34.38 ± 0.04%, lipid=29.95 ± 0.01%, ash=29.56 ± 1.86% and energy=21.57 ± 0.11%). Fish fed diet D50 also produced a net return of 12,648.02 XAF, 21.38% higher than the control (9,943.23 XAF). In conclusion, dietary inclusion of 50% MSM gave the best results in terms of fish somatic growth and cost-benefit analysis.
Research Article
May 16, 2023
A cross-sectional study was conducted in different Lakes of South Wollo Zone of the Eastern Amhara Regional State of Ethiopia, from November 2018 to April 2019, with the aim of determining the prevalence and identifying the species of internal and external parasites from fresh water fish. A total of 506 Oreochromis niloticus and 215 Cyprinus carpio fish (n=721) were collected and examined for the presence of fish helminthes parasites. The prevalence of parasites in Lake Luggo, Ardibo, Golbo and Maibar were found to be 49.4%, 41.7%, 46.7% and 36.0% respectively. The overall prevalence of parasites of both fish species was 45.1%. The prevalence of parasites in O. niloticus was found to be 42.3% and that of Cyprinus carpio was 51.6%. There was statistical significant difference (X2=5.311, p= 0.021) between the two fish species in the overall prevalence of the parasite infestations. However, the difference in prevalence of parasites among study site was not statistically significant X2=3.263, p=0.064). In this study, five parasites namely Contracecum spp and Camallanus spp. (nematoda), Clinostomum spp., Diplostomum spp. (eye fluck) and Posthodiplostomum spp. (Black spot), (trematoda) were recovered with a prevalence of 29.4% (n=212), 13.2% (n=93), 25.3% (n=183), 2.5% (n=18), and 14.8% (n=107) with the overall prevalence of 45.1% (n=325) respectively. There was a statistically highly significant difference (X2=126.504, p=0.000) in the prevalence and distribution of parasite between the study area. No significant variations (P>0.05) in prevalence of helminthes parasite were noticed in relation to sex and study sites of fishes, but in case of age significant variation was observed (p<0.05) except in which prevalence was observed to significantly increase when age is decreased. Among the parasites recovered Clinostomum spp. and Contracaecum spp. have been reported to be zoonotic and therefore, more research is required to characterize them and determine their zoonotic importance. Meanwhile, the present study revealed that helminthes parasites are among the major health constrains of fishes in the aforementioned water bodies, demanding an urgent control Intervention.
