Mouse Lemur Phylogeography Revises a Model of Ecogeographic Constraint in Madagascar
Mouse Lemur Phylogeography Revises a Model of Ecogeographic Constraint in Madagascar
复制标题
鼠狐猴系统发育地理学修正了马达加斯加的生态地理约束模型
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
K. L. Heckman
中科院分区：
文献类型：
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作者：
A. Yoder;K. L. Heckman
鼠狐猴（Microcebus）是一种小型夜行性灵长类动物，广泛分布于马达加斯加岛。直到过去的十年左右，人们认为只有两个物种，一个是占领马达加斯加东部地区（M。rufus）和一个占据了马达加斯加西部地区（M. murinus）。密集的实地研究，伴随着遗传分析，发现两个物种的分类大大低估了实际的物种多样性，然而，现在有八个物种被确认。有许多指标表明，即使是八种分类法也不足以代表它们实际的进化多样性。我们的章节回顾了目前公认的物种多样性的一些证据，并澄清了假设还有其他物种尚未确定的证据。首先，本章重点介绍了线粒体DNA分析揭示的意想不到的地理模式。这些数据表明，鼠狐猴物种不形成西部和东部的分支，生态地理学证据可能会建议。相反，似乎有一个历史的物种分为北方和南方分支。然而，我们强调的一点是，后一种模式是基于不完整的物种和地理抽样。只有对马达加斯加所有地区的种群进行完整的采样，才能揭示鼠狐猴进化的真实历史模式。
Mouse lemurs (genus Microcebus) are small nocturnal primates that are ubiquitously distributed throughout Madagascar. Until the past decade or so, it was believed that there were only two species, one that occupied the eastern regions of Madagascar (M. rufus) and one that occupied the western regions of Madagascar (M. murinus). Intensive field studies, accompanied by genetic analysis, have revealed that the two species taxonomy vastly underestimates the actual species diversity, however, with eight species now recognized. There are numerous indicators that even the eight species taxonomy is an insufficient representation of their actual evolutionary diversity. Our chapter reviews some of the evidence both for the presently acknowledged species diversity, and clarifies the evidence for supposing that there are other species yet to be identified. Primarily, the chapter focuses on the unexpected phylogeographic patterns revealed by mitochondrial DNA analysis. These data show that mouse lemur species do not form western and eastern clades, as ecogeographic evidence might suggest. Rather, there appears to be a historical separation of species into northern and southern clades. We emphasize the point, however, that this latter pattern is based on incomplete species and geographic sampling. Only complete sampling of populations from all regions of Madagascar will reveal the true historical patterns of mouse lemur evolution.
影响因子：
10.7
作者：
Hammer, MF;Karafet, T;Zegura, SL
通讯作者：
Zegura, SL