575. Exploiting genomics to infer population structure and genetic variability in wild and farmed seabream and seabass
Bildiriler > Tam Metin Bildiri
Yazarlar: B. Villanueva, A. Fernández, R. Peiro-Pastor, C. Peñaloza, R.D. Houston, A.K. Sonesson, C.S. Tsigenopoulos, L. Bargelloni, K. Gamsiz, B. Karahan, E.Ö. Gökçek, J. Fernánde, M. Saura
Proceedings of 12th World Congress on Genetics Applied to Livestock Production (WCGALP), , , Uluslararası, Tam Metin Bildiri, ss 2383-2386
DOI: 10.3920/978-90-8686-940-4_575
Özet
Knowledge of population structure and genetic variability within and between wild and farmed populations is important to achieve sustainable aquaculture production. In this study, these features were assessed for gilthead seabream and European seabass using a combined species SNP array newly developed. Population structure analyses revealed a clear differentiation between wild and farmed populations in both species, indicating that care must be taken to avoid escapes that could have undesirable genetic effects on native populations. Wild populations showed a low degree of differentiation, particularly in seabream. However, farmed populations were quite heterogeneous and showed a high degree of differentiation. In general, the effective population size was large (>103) for wild and small (<102) for farmed populations of both species. The low effective population size estimated for some farmed populations highlights the need of applying measures to control the rate at which genetic variability is lost.