期刊
CONSERVATION BIOLOGY
卷 22, 期 3, 页码 783-794出版社
WILEY
DOI: 10.1111/j.1523-1739.2008.00965.x
关键词
artificial propagation; captive breeding; domestication selection; hatchery; Oncorhynchus kisutch; parentage analysis
Captive breeding is a commonly used strategy for species conservation. One risk of captive breeding is domestication selection-selection for traits that are advantageous in captivity but deleterious in the wild. Domestication selection is of particular concern for species that are bred in captivity for many generations and that have a high potential to interbreed with wild populations. Domestication is understood conceptually at a broad level, but relatively little is known about bow natural selection differs empirically between wild and captive environments. We used genetic parentage analysis to measure natural selection on time of migration, weight, and morphology for a coho salmon (Oncorhynchus kisutch)population that was subdivided into captive and natural components. Our goal was to determine whether natural selection acting on the traits we measured differed significantly between the captive and natural environments. For males, larger individuals were favored in both the captive and natural environments in all years of the study, indicating that selection on these traits in captivity was similar to that in the wild. For females, selection on weight was significantly stronger in the natural environment than in the captive environment in 1 year and similar in the 2 environments in 2 other years. In both environments, there was evidence of selection for later time of return for both males and females. Selection on measured traits other than weight and run timing was relatively weak. Our results are a concrete example of bow estimates of natural selection during captivity can be used to evaluate this common risk of captive breeding programs.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据