期刊
ROYAL SOCIETY OPEN SCIENCE
卷 3, 期 7, 页码 -出版社
ROYAL SOC
DOI: 10.1098/rsos.160152
关键词
density; domestication; farm escapes; genetic interaction; growth; hybridization
资金
- European Community's Seventh Framework Programme [KBBE-311920]
- Research Council of Norway
The conditions encountered by Atlantic salmon, Salmo salar L., in aquaculture are markedly different from the natural environment. Typically, farmed salmon experience much higher densities than wild individuals, and may therefore have adapted to living in high densities. Previous studies have demonstrated that farmed salmon typically outgrow wild salmon by large ratios in the hatchery, but these differences are much less pronounced in the wild. Such divergence in growth may be explained partly by the offspring of wild salmon experiencing higher stress and thus lower growth when compared under high-density farming conditions. Here, growth of farmed, wild and F-1 hybrid salmon was studied at contrasting densities within a hatchery and semi-natural environment. Farmed salmon significantly outgrew hybrid and wild salmon in all treatments. Importantly, however, the reaction norms were similar across treatments for all groups. Thus, this study was unable to find evidence that the offspring of farmed salmon have adapted more readily to higher fish
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