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| Genetic structure of wild and farmed Nile tilapia (Oreochromis niloticus) populations in Benin based on genome wide SNP technology Fagbémi, M.N.A.; Pigneur, L.-M.; André, A.; Smitz, N.; Gennotte, V.; Michaux, J.R.; Mélard, C.; Lalèyè, P.A.; Rougeot, C. (2021). Genetic structure of wild and farmed Nile tilapia (Oreochromis niloticus) populations in Benin based on genome wide SNP technology. Aquaculture 535: 736432. https://dx.doi.org/10.1016/j.aquaculture.2021.736432
In: Aquaculture. Elsevier: Amsterdam; London; New York; Oxford; Tokyo. ISSN 0044-8486; e-ISSN 1873-5622, meer
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In order to characterize the genetic structure of the thirteen sampled populations of O. niloticus 2.950 SNPs were used to perform a clustering analysis and investigate the genetic diversities and population differentiations. Our results showed that, populations of O. niloticus collected in different basin and farms in Benin showed low to moderate genetic differentiation (Fst from 0.018 to 0.143) with the exception of the Nangbéto population of Mono basin, which is genetically more differentiated (Fst from 0.091 to 0.278). Compared to wild populations, there is a greater genetic proximity between the breeding populations of CRIAB and the Pendjari river population (Fst = 0.0 47), and between the Yohan-Esteve farm populations and the Gbassa population (Fst from 0.045 to 0.055). In view of the low level of inbreeding and the good growth and reproductive performance of the Togbadji population in the Mono basin, it would be a potential candidate for the development of a local strain of O. niloticus for aquaculture in Benin. |
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