Generic genetic differences between farmed and wild Atlantic Salmon identified from a 7K SNP-chip

摘要: Genetic interactions between farmed and wild conspecifics are of special concern in fisheries where large numbers domesticated individuals released into the wild. In Atlantic salmon (Salmo salar), selective breeding since 1970's has resulted rapid genetic changes commercially important traits, such as a doubling growth rate. Each year, escape from net pens, enter rivers, interbreed with salmon. Field experiments demonstrate that introgression may weaken viability recipient populations. However, due to lack diagnostic markers, little is known about actual rates gene flow Here we present panel 60 single nucleotide polymorphisms (SNPs) collectively identifying individual being or wild, regardless their populations origin. These were sourced pool 7000 SNPs comparing historical populations, distributed on all but two 29 chromosomes. We suggest generic differences at these have arisen domestication. The identified will permit quantification elucidating one most controversial potential impacts aquaculture. With increasing global interest aquaculture pressure results our study implications for wide range species.