Does domestication cause changes in growth reaction norms? A study of farmed, wild and hybrid Atlantic salmon families exposed to environmental stress.

ABSTRACT: One of the most important traits linked with the successful domestication of animals is reducing their sensitivity to environmental stressors in the human controlled environment. In order to examine whether domestication selection in Atlantic salmon Salmo salar L., over approximately ten generations, has inadvertently selected for reduced responsiveness to stress, we compared the growth reaction norms of 29 wild, hybrid and domesticated families reared together under standard hatchery conditions (control) and in the presence of a stressor (reduced water level twice daily). The experiment was conducted for a 14 week period. Farmed salmon outgrew wild salmon 1:2.93 in the control tanks, and no overlap in mean weight was displayed between families representing the three groups. Thus, the elev

SUBMITTER: Solberg MF 

PROVIDER: S-EPMC3561353 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature