Fisheries and Oceans Canada and Cooperative Resource Management Institute, School of Resource and Environmental Management, Simon Fraser University, Burnaby, BC, V5A 1S6 Canada.
J Fish Biol. 2013 Nov;83(5):1268-86. doi: 10.1111/jfb.12221.
Behaviour trials determining antipredator response were conducted on first and second generation juveniles from a captive breeding and rearing programme for endangered Inner Bay of Fundy Atlantic salmon Salmo salar. Second generation captive fry displayed significantly higher levels of risk-taking behaviour before and after exposure to a simulated avian predator. Because the first and second generation fry were reared under the same environmental conditions and differed only in the number of generations spent in captivity, these results suggest that rapid genetic changes, possibly due to domestication selection, may have occurred. Antipredator response was also assessed in fully wild and highly domesticated experimental groups: wild fry displayed the greatest antipredator response and domesticated fry displayed the highest levels of risk-taking behaviour. These results add to the growing evidence documenting rapid genetic change in response to rearing in a captive environment.
对来自濒危芬迪湾大西洋鲑鱼（Salmo salar）圈养繁殖和饲养计划的第一代和第二代幼鱼进行了行为试验，以确定其抗捕食者的反应。第二代圈养鱼苗在暴露于模拟的鸟类捕食者之前和之后表现出更高水平的冒险行为。由于第一代和第二代鱼苗在相同的环境条件下饲养，并且仅在圈养的世代数上有所不同，因此这些结果表明，可能由于驯化选择，已经发生了快速的遗传变化。还在完全野生和高度驯化的实验组中评估了抗捕食者的反应：野生鱼苗表现出最大的抗捕食者反应，而驯化鱼苗表现出最高水平的冒险行为。这些结果增加了越来越多的证据，证明了在圈养环境中繁殖会导致快速的遗传变化。
