Matocq Marjorie D
Museum of Vertebrate Zoology and Department of Integrative Biology, 3101 Valley Life Sciences Building, University of California, Berkeley, California 94720-3160, USA.
Mol Ecol. 2002 Feb;11(2):229-42. doi: 10.1046/j.0962-1083.2001.01430.x.
The dusky-footed woodrat, Neotoma fuscipes, is a medium-sized rodent that inhabits low elevation woodland habitats along the Pacific coast of North America from Oregon, throughout California and into Baja California. Analyses of mitochondrial sequence variation throughout the distribution reveal substantial phylogeographical structure within N. fuscipes. The major mitochondrial lineages are largely concordant with previously identified morphological subdivisions within the taxon. The geographical distribution of distinct clades suggests that a combination of topographic barriers and the expansion and contraction of suitable habitat during the past 2 million years, especially along particular mountain ranges, have played a major role in the diversification of N. fuscipes. Furthermore, relatively low levels of genetic variation across the northern half of the distribution suggest that dusky-footed woodrats may have only recently expanded into this region.
暗足林鼠（Neotoma fuscipes）是一种中型啮齿动物，栖息于北美洲太平洋沿岸从俄勒冈州到整个加利福尼亚州再到下加利福尼亚州的低海拔林地栖息地。对整个分布范围内线粒体序列变异的分析揭示了暗足林鼠内部显著的系统地理学结构。主要的线粒体谱系在很大程度上与该分类单元内先前确定的形态学细分一致。不同分支的地理分布表明，地形屏障以及过去200万年中适宜栖息地的扩张和收缩，尤其是沿着特定山脉，在暗足林鼠的多样化过程中发挥了重要作用。此外，分布范围北半部相对较低的遗传变异水平表明，暗足林鼠可能直到最近才扩展到该地区。
