Publications Scientifiques

[ Article ] Reproductive ecology and establishment of naturally colonized tilapine cichlid, Sarotherodon galilaeus (Pisces: Actinopterigii: Perciformes) from a man-made lake, Southern Benin, West Africa: implications for sustainable fisheries and aquacultural valor

Date de soumission: 01-03-2018
Année de Publication: 2016
Entité/Laboratoire Laboratoire d'Ecologie et de Management des Ecosystèmes Aquatiques (LEMEA)
Document type : Article
Discipline(s) : Hydrobiologie et Aquaculture
Titre Reproductive ecology and establishment of naturally colonized tilapine cichlid, Sarotherodon galilaeus (Pisces: Actinopterigii: Perciformes) from a man-made lake, Southern Benin, West Africa: implications for sustainable fisheries and aquacultural valor
Auteurs GBAGUIDI Houehanou MAG [1], ADITE ALPHONSE [2],
Journal: International Journal of Fisheries and Aquatic Studies
Catégorie Journal: Internationale
Impact factor: 0
Volume Journal: 4
DOI: ISSN: 2347-5129
Resume Some aspects of the reproductive ecology of Sarotherodon galilaeus, a freshwater tilapine cichlid, were examined to evaluate the establishment of the species in the man-made lake of Ahozon (South-Benin). S. galilaeus individuals were sampled monthly during wet, flood and dry seasons from August/2014 to July/2015. This species dominated Lake Ahozon and made 85.21% of the fish community. Among the 5,550 individuals sampled, 33.55% were juveniles, 12.25% were sub-adults and 54.20% were adults. S. galilaeus showed a sex-ratio of (0.60:1) and low batch fecundities (42-1,149 oocytes). Sizes at sexual maturity (L 50 ) in Lake Ahozon were 131 mm and 106 mm for males and females, respectively, and the species spawned all seasons. The favorable water quality and the life-history strategy between “r” and “k” selection of S. galilaeus, accounted for its rapid establishment in Lake Ahozon. A sustainable fisheries/aquaculture exploitation of S. galilaeus in Lake Ahozon requires a holistic management scheme.
Mots clés Establishment, Fisheries, Life-history, Man-made lake, Spawning seasons
Pages 278 - 287
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