Breeding seasons of some commercially important fishes in Ethiopia: Implications for fish management

Tesfahun, Agumassie

doi:10.5897/sre2018.6596

Cited by 4 publications

(3 citation statements)

References 19 publications

(20 reference statements)

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“…The quantity of fish caught in December surpassed that of any other month throughout the study duration. This elevation in catch can be attributed to the successful breeding of fishes and the abundance of available feed during this specific month (Agumassie, 2019;Kuzuhara et al, 2019;Rahman et al, 2022;Biswas et al, 2023). Kar and Chakraborty (2011) documented that Acetees sp, Gobiodies, and Bombay duck are the prevailing species within the ESBN fishery.…”

Section: Discussionmentioning

confidence: 99%

Bio-socio-economic analysis of ESBN fishery of Kattoli coastal area of Chattogram, Bangladesh

Mondal,

Choudhury,

Siddiqui

et al. 2023

Asian J. Med. Biol. Res.

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In consideration of the characteristics inherent to the estuarine ecosystem, the employment of the estuarine set bag net (ESBN) emerges as an effective instrument for the capture of a diverse spectrum of finfish and shellfish species. The present investigation, conducted between May and December 2015 in Kattoli, a representative locality along the Chattogram coast, was undertaken to perform a comprehensive bio-socio-economic analysis of the ESBN fishery. The analysis of the catch composition in Kattoli revealed that finfish constituted 67.67%, shrimp accounted for 24.34%, and crab made up 7.99% of the total catch. The average daily catch per boat in Kattoli was determined to be 25.8 kg. The zenith of the total daily catch per boat, reaching 70 kg, was observed in December, while the nadir occurred in August, when no fishing activities were recorded in Kattoli. The cumulative catch over the study period in Kattoli amounted to 26,664 kg, with a complete absence of fishing in August. Moreover, the average daily catch per fisherman stood at 6.19 kg in Kattoli. In terms of economic considerations, the mean monthly cost per boat in the Kattoli region was approximately 8,750 BDT, while the average monthly sales revenue exceeded 28,695 BDT in Kattoli. Notably, during July and August, a substantial proportion of fishermen were engaged in Hilsa (Tenualosa ilisha) fishing utilizing gill nets, which resulted in a diminished catch with ESBN during these months. Furthermore, the preliminary socio-economic conditions of the study area were also explored. This research offers valuable insights into the bio-socio-economic dimensions of the ESBN fishery in the Kattoli coastal area, with potential practical implications for fisheries management and the livelihoods of the local fishing community. Asian J. Med. Biol. Res. 2023, 9 (4), 114-125

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Section: Discussionmentioning

confidence: 99%

Bio-socio-economic analysis of ESBN fishery of Kattoli coastal area of Chattogram, Bangladesh

Mondal,

Choudhury,

Siddiqui

et al. 2023

Asian J. Med. Biol. Res.

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“…Lates niloticus, Oreochromis niloticus, Clarias gariepinus, Bagrus dockmak and Labeobarbus species are the commercial species in the country (Getahun, 2003;Tesfahun, 2019aTesfahun, , 2019bTilahun et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…According to Golubtsov and Mina ( 2003 ), the inland fish diversity of Ethiopia is represented by 12 orders, 29 families and 70 genera and 180 species (Golubtsov & Darkov, 2008 ), with variation in species diversity and composition within and among river basins, lakes and reservoirs (Grove et al., 1975 ). Lates niloticus , Oreochromis niloticus, Clarias gariepinus, Bagrus dockmak and Labeobarbus species are the commercial species in the country (Getahun, 2003 ; Tesfahun, 2019a , 2019b ; Tilahun et al., 2016 ).…”

Section: Introductionmentioning

confidence: 99%

Population structure and genetic diversity of Nile tilapia (Oreochromis niloticus) using microsatellite markers from selected water bodies in southwest Ethiopia

Ahmed,

Hordofa,

Meressa

et al. 2023

Veterinary Medicine & Sci

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BackgroundThe Ethiopian southwest drainage has been designated a huge potential for fishery and aquaculture development. However, the genetic diversity of Nile tilapia along the main water bodies has yet to be uncovered. Therefore, this study used microsatellite markers to assess the genetic structure and diversity of Nile cichlid (Oreochromis niloticus) populations.MethodsOne hundred and sixty‐seven fish were collected from Alwero Dam, Baro River, Gilgel Gibe I Dam and Gojeb River southwest of Ethiopia. Genomic DNA was extracted from 40 tissue samples using a Qiagen DNA tissue extraction kit and genetic polymorphism was estimated using GenAlEx6.502 software.ResultsThe result showed that four loci were polymorphic and produced 3–6 alleles per locus, while the number of effective alleles (Ne) and the number of distinct alleles (Na) were 1.370 and 2.063, respectively. Observed heterozygosity (Ho) and expected heterozygosity (He) were expanded between 0.100.50 and 0.115–0.265, respectively. Baro River population revealed the highest mean expected heterozygosity of 0.265, whereas the lowest expected mean heterozygosity of 0.115 was from the Alwero Dam. The genetic differentiation between populations (FST) resulted in a moderate to a very high degree of divergence between the populations. The Alwero Dam and Gojeb River populations were the most divergent populations (FST = 0.524), unlike those from the Alwero Dam and Baro River. The genetic variation among individuals within populations was 69%, whereas 31% appeared among populations and no variation within individuals to the overall variance.ConclusionThis study confirmed the presence of significant genetic variations and differentiation among populations except between Gilgel Gibe I Dam and Gojeb River. This study highlights the genetic structure and differentiation amongst wild Nile tilapia (O. niloticus) populations in south‐western Ethiopia and paves the way for selective aquaculture breeding programs in the study area.

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Organochlorine pesticides in Ethiopian waters: Implications for environmental and human health

Asefa,

Mergia,

Damtew

et al. 2024

Toxicology Reports

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Breeding seasons of some commercially important fishes in Ethiopia: Implications for fish management

Cited by 4 publications

References 19 publications

Bio-socio-economic analysis of ESBN fishery of Kattoli coastal area of Chattogram, Bangladesh

Bio-socio-economic analysis of ESBN fishery of Kattoli coastal area of Chattogram, Bangladesh

Population structure and genetic diversity of Nile tilapia (Oreochromis niloticus) using microsatellite markers from selected water bodies in southwest Ethiopia

Organochlorine pesticides in Ethiopian waters: Implications for environmental and human health

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