Growth reaction norms of domesticated, wild and hybrid Atlantic salmon families in response to differing social and physical environments.

ABSTRACT:

Background

Directional selection for growth has resulted in the 9-10th generation of domesticated Atlantic salmon Salmo salar L. outgrowing wild salmon by a ratio of approximately 3:1 when reared under standard hatchery conditions. In the wild however, growth of domesticated and wild salmon is more similar, and seems to differ at the most by a ratio of 1.25:1. Comparative studies of quantitative traits in farmed and wild salmon are often performed by the use of common-garden experiments where salmon of all origins are reared together to avoid origin-specific environmental differences. As social interaction may influence growth, the large observed difference in growth between wild and domesticated salmon in the hatchery may not be entirely genetically based, but inflated by inter-st

SUBMITTER: Solberg MF 

PROVIDER: S-EPMC4231500 | biostudies-literature | 2013 Oct

REPOSITORIES: biostudies-literature