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Changes in the genetic structure of Atlantic salmon populations over four decades reveal substantial impacts of stocking and potential resiliency ArchiMer
Perrier, Charles; Guyomard, Rene; Bagliniere, Jean-luc; Nikolic, Natacha; Evanno, Guillaume.
While the stocking of captive-bred fish has been occurring for decades and has had substantial immediate genetic and evolutionary impacts on wild populations, its long-term consequences have only been weakly investigated. Here, we conducted a spatiotemporal analysis of 1428 Atlantic salmon sampled from 1965 to 2006 in 25 populations throughout France to investigate the influence of stocking on the neutral genetic structure in wild Atlantic salmon (Salmo salar) populations. On the basis of the analysis of 11 microsatellite loci, we found that the overall genetic structure among populations dramatically decreased over the period studied. Admixture rates among populations were highly variable, ranging from a nearly undetectable contribution from donor stocks...
Tipo: Text Palavras-chave: Conservation; Population genetics; Salmo salar; Stocking; Temporal stability.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00141/25271/23328.pdf
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