On the Analysis of Evolutionary Change along Single Branches in a Phylogeny
On the Analysis of Evolutionary Change along Single Branches in a Phylogeny
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系统发育中单个分支的进化变化分析
DOI：
10.1086/588078
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
L. Revell
中科院分区：
文献类型：
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作者：
L. Revell
比较生物学家有时感兴趣的是估计沿着系统发育中的单个分支的进化率。我评估了两种方法，它们可以将单个树枝上的进化速度与整个树的其余部分的进化速度进行比较。第一种是McPeek的对比方法，第二种是在最近发表的两项研究中独立提出的似然方法。虽然后一种方法主要是为了比较分支间的进化速率而开发的，但该方法同样适用于分析单个或孤立分支的进化速率。我发现这两种方法的I型误差都是可以接受的，但McPeek方法的功率和参数估计相对较差，因为它通常被应用。
Comparative biologists are sometimes interested in estimating the evolutionary rate along single branches in a phylogeny. I evaluate two methods by which the evolutionary rate along single branches can be compared with the evolutionary rate throughout the rest of the tree. The first is McPeek’s contrasts method, and the second is a likelihood method presented independently in two recently published studies. Although the latter method was developed primarily for the comparison of rates among clades, the approach is equally suited for the analysis of evolutionary rate along single or isolated branches. I find that Type I error is acceptable in both methods but that power and parameter estimation are relatively poor in McPeek’s method as it is typically applied.