Rueness Eli Knispel, Stenseth Nils Chr, O'Donoghue Mark, Boutin Stan, Ellegren Hans, Jakobsen Kjetill S
Centre for Ecological and Evolutionary Synthesis, Department of Biology, University of Oslo, P.O. Box 1031 Blindern, N-0315 Oslo, Norway.
Nature. 2003 Sep 4;425(6953):69-72. doi: 10.1038/nature01942.
The Canadian lynx, distributed all across the northern part of North America, is well known for its regular population cycles-cycles that have different underlying structures in different parts of Canada. Using both nuclear and mitochondrial DNA markers, we report here a close resemblance between the earlier observed spatial ecological structuring of the Canadian lynx and its spatial genetic structuring. Specifically, we demonstrate that the Rocky Mountains represent a barrier to gene flow in western Canada, and, somewhat surprisingly, we detect the presence of a geographically invisible barrier south of Hudson Bay (coinciding with the separation between the ecological Continental and Atlantic regions). No evidence for isolation in different glacial refugia within North America was found. We suggest that ecological factors underlying the spatial dynamic structuring also strongly influence the genetic structuring of the Canadian lynx.
加拿大猞猁分布于北美洲北部各地，以其有规律的种群周期而闻名，这些周期在加拿大不同地区有着不同的潜在结构。我们使用核DNA和线粒体DNA标记，在此报告加拿大猞猁早期观察到的空间生态结构与其空间遗传结构之间的密切相似性。具体而言，我们证明落基山脉是加拿大西部基因流动的障碍，而且有点令人惊讶的是，我们检测到哈德逊湾以南存在一个地理上不可见的障碍（与生态上的大陆区和大西洋区的分界线重合）。未发现北美境内不同冰川避难所存在隔离的证据。我们认为，空间动态结构背后的生态因素也强烈影响着加拿大猞猁的遗传结构。
