Conservation and Evolutionary Genetics Group, Estación Biológica de Doñana (EBD-CSIC), Avd. Américo Vespucio s/n, 41092 Seville, Spain.
Biol Lett. 2012 Aug 23;8(4):644-7. doi: 10.1098/rsbl.2012.0162. Epub 2012 Apr 4.
Recurrent cycles of climatic change during the Quaternary period have dramatically affected the population genetic structure of many species. We reconstruct the recent demographic history of the coyote (Canis latrans) through the use of Bayesian techniques to examine the effects of Late Quaternary climatic perturbations on the genetic structure of a highly mobile generalist species. Our analysis reveals a lack of phylogeographic structure throughout the range but past population size changes correlated with climatic changes. We conclude that even generalist carnivorous species are very susceptible to environmental changes associated with climatic perturbations. This effect may be enhanced in coyotes by interspecific competition with larger carnivores.
在第四纪时期，气候的反复变化极大地影响了许多物种的种群遗传结构。我们通过使用贝叶斯技术来重建郊狼（Canis latrans）的近代人口历史，以研究晚第四纪气候干扰对高度移动的普通物种遗传结构的影响。我们的分析表明，在整个范围内缺乏系统地理学结构，但过去的种群大小变化与气候变化有关。我们的结论是，即使是普通的肉食性物种也非常容易受到与气候变化相关的环境变化的影响。这种影响在郊狼中可能会因与大型肉食动物的种间竞争而加剧。
