期刊
MOLECULAR ECOLOGY
卷 25, 期 19, 页码 4745-4756出版社
WILEY
DOI: 10.1111/mec.13797
关键词
Canis lupus; genetic rescue; heterozygosity; immigration; inbreeding; inbreeding depression
资金
- Swedish research Council Formas
- Swedish Environmental Protection Agency
- Norwegian Research Council
- Norwegian Environment Agency
- Swedish University of Agricultural Sciences
- Norwegian Institute for Nature Research
- Hedmark University College (HUC)
- County Governor of Hedmark
- Marie Claire Cronstedts Foundation
Natural populations are becoming increasingly fragmented which is expected to affect their viability due to inbreeding depression, reduced genetic diversity and increased sensitivity to demographic and environmental stochasticity. In small and highly inbred populations, the introduction of only a few immigrants may increase vital rates significantly. However, very few studies have quantified the long-term success of immigrants and inbred individuals in natural populations. Following an episode of natural immigration to the isolated, severely inbred Scandinavian wolf (Canis lupus) population, we demonstrate significantly higher pairing and breeding success for offspring to immigrants compared to offspring from native, inbred pairs. We argue that inbreeding depression is the underlying mechanism for the profound difference in breeding success. Highly inbred wolves may have lower survival during natal dispersal as well as competitive disadvantage to find a partner. Our study is one of the first to quantify and compare the reproductive success of first-generation offspring from migrants vs. native, inbred individuals in a natural population. Indeed, our data demonstrate the profound impact single immigrants can have in small, inbred populations, and represent one of very few documented cases of genetic rescue in a population of large carnivores.
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