濒危物种
生物
遗传多样性
有效人口规模
遗传侵蚀
进化生物学
消光(光学矿物学)
人口
近亲繁殖
人口规模
遗传变异
近亲繁殖抑郁症
生态学
人口瓶颈
遗传学
人口学
等位基因
栖息地
基因
微卫星
社会学
古生物学
作者
David Díez‐del‐Molino,Fátima Sánchez-Barreiro,Ian Barnes,M. Thomas P. Gilbert,Love Dalén
标识
DOI:10.1016/j.tree.2017.12.002
摘要
Many species have undergone dramatic population size declines over the past centuries. Although stochastic genetic processes during and after such declines are thought to elevate the risk of extinction, comparative analyses of genomic data from several endangered species suggest little concordance between genome-wide diversity and current population sizes. This is likely because species-specific life-history traits and ancient bottlenecks overshadow the genetic effect of recent demographic declines. Therefore, we advocate that temporal sampling of genomic data provides a more accurate approach to quantify genetic threats in endangered species. Specifically, genomic data from predecline museum specimens will provide valuable baseline data that enable accurate estimation of recent decreases in genome-wide diversity, increases in inbreeding levels, and accumulation of deleterious genetic variation.
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