Matches in SemOpenAlex for { <https://semopenalex.org/work/W1971844136> ?p ?o ?g. }
Showing items 1 to 65 of
65
with 100 items per page.
- W1971844136 endingPage "14" @default.
- W1971844136 startingPage "3" @default.
- W1971844136 abstract "The spawning and recruitment patterns of the major Cichlid fish species, including Hemichromis fasciatus, Oreochromis niloticus, Sarotherodon galilaeus, Tilapia zillii and other species, Auchenoglanis occidentalis, Brycinus nurse, Clarias gariepinus and Marcusenius senegalensis were studied for 24 months in Bontanga Reservoir, Ghana, using length-based fish stock assessment approaches. The species spawned throughout the year, with two spawning pulses described as major and minor spawning seasons. The major spawning season occurred from March to September for the Cichlids, and from May to September for the other species. The minor spawning season, indicative of extended spawning, occurred from October to March for all the fish stocks. Fish spawning began with the onset of the rains in April/May, peaking by June/July, before the rainfall peak in August for all the fish stocks studied. Recruitment was found to occur throughout the year, with major and minor pulses coinciding with the major and minor spawning seasons. Accordingly, the most appropriate time for a possible closed fishing period appears to be from June to August, 1 month after the start of, and before the end of, the rains. The estimated mean standard length (Lm) for first time spawners of A. occidentalis, B. nurse, C. gariepinus and H. faciatus were 11.7, 12.7, 2.7 and 7.5 cm respectively. The estimated maturity–length ratio of 0.4 and 0.2 for O. niloticus, S. galilaeus and T. zillii were lower than the known 0.7 for normal growth, suggesting the tilapias matured faster, and at a smaller size, in the reservoir. Apparent sexual precocity associated with early maturity, year-round spawning and recruitment were some important adaptations found to have sustained the reservoir fisheries, even during high fishing pressures. For conservation and sustainable exploitation of the fisheries, instituting a closed fishing season, mesh size regulations, withdrawal rights and a community-based fishery management system are recommended." @default.
- W1971844136 created "2016-06-24" @default.
- W1971844136 creator A5049960877 @default.
- W1971844136 creator A5052898625 @default.
- W1971844136 date "2010-02-24" @default.
- W1971844136 modified "2023-10-17" @default.
- W1971844136 title "Spawning and recruitment patterns of major fish species in Bontanga Reservoir, Ghana, West Africa" @default.
- W1971844136 cites W1975009610 @default.
- W1971844136 cites W2053608642 @default.
- W1971844136 cites W2061537338 @default.
- W1971844136 cites W206177543 @default.
- W1971844136 cites W2087677047 @default.
- W1971844136 cites W2130089828 @default.
- W1971844136 doi "https://doi.org/10.1111/j.1440-1770.2010.00418.x" @default.
- W1971844136 hasPublicationYear "2010" @default.
- W1971844136 type Work @default.
- W1971844136 sameAs 1971844136 @default.
- W1971844136 citedByCount "12" @default.
- W1971844136 countsByYear W19718441362012 @default.
- W1971844136 countsByYear W19718441362013 @default.
- W1971844136 countsByYear W19718441362017 @default.
- W1971844136 countsByYear W19718441362019 @default.
- W1971844136 countsByYear W19718441362020 @default.
- W1971844136 countsByYear W19718441362021 @default.
- W1971844136 countsByYear W19718441362022 @default.
- W1971844136 crossrefType "journal-article" @default.
- W1971844136 hasAuthorship W1971844136A5049960877 @default.
- W1971844136 hasAuthorship W1971844136A5052898625 @default.
- W1971844136 hasConcept C2778189562 @default.
- W1971844136 hasConcept C2778284828 @default.
- W1971844136 hasConcept C2778658382 @default.
- W1971844136 hasConcept C2780761129 @default.
- W1971844136 hasConcept C2909208804 @default.
- W1971844136 hasConcept C505870484 @default.
- W1971844136 hasConcept C514101110 @default.
- W1971844136 hasConcept C86803240 @default.
- W1971844136 hasConceptScore W1971844136C2778189562 @default.
- W1971844136 hasConceptScore W1971844136C2778284828 @default.
- W1971844136 hasConceptScore W1971844136C2778658382 @default.
- W1971844136 hasConceptScore W1971844136C2780761129 @default.
- W1971844136 hasConceptScore W1971844136C2909208804 @default.
- W1971844136 hasConceptScore W1971844136C505870484 @default.
- W1971844136 hasConceptScore W1971844136C514101110 @default.
- W1971844136 hasConceptScore W1971844136C86803240 @default.
- W1971844136 hasIssue "1" @default.
- W1971844136 hasLocation W19718441361 @default.
- W1971844136 hasOpenAccess W1971844136 @default.
- W1971844136 hasPrimaryLocation W19718441361 @default.
- W1971844136 hasRelatedWork W1069930389 @default.
- W1971844136 hasRelatedWork W1978153694 @default.
- W1971844136 hasRelatedWork W2249048612 @default.
- W1971844136 hasRelatedWork W2252729214 @default.
- W1971844136 hasRelatedWork W2329226196 @default.
- W1971844136 hasRelatedWork W2339822030 @default.
- W1971844136 hasRelatedWork W2584778831 @default.
- W1971844136 hasRelatedWork W2606499548 @default.
- W1971844136 hasRelatedWork W2618251895 @default.
- W1971844136 hasRelatedWork W2599259950 @default.
- W1971844136 hasVolume "15" @default.
- W1971844136 isParatext "false" @default.
- W1971844136 isRetracted "false" @default.
- W1971844136 magId "1971844136" @default.
- W1971844136 workType "article" @default.