Martins Emília P
Department of Genetics, SK-50, University of Washington, Seattle, Washington, 98195.
Evolution. 1996 Feb;50(1):12-22. doi: 10.1111/j.1558-5646.1996.tb04468.x.
A method is proposed to conduct phylogenetic analyses of comparative or interspecific data when the true phylogeny is not known. Standard models of speciation and/or extinction or other methods are used to generate a sample from the set of all possible phylogenies for the measured species. The comparative data are then analyzed on each of the possible trees to obtain a distribution of possible evolutionary statistics for these data. The mean of this distribution is proposed as a reasonable estimate of the true evolutionary statistic of interest. Ways of obtaining confidence intervals and of developing hypothesis tests for this mean statistic are also proposed. The method can be used with any comparative method or phylogenetic analysis technique when phylogenetic relationships among species are not known or when branch lengths for a phylogeny in units of expected character change (as required by most methods) are not available. Computer programs to conduct the analyses are available on request.
提出了一种在真实系统发育关系未知时对比较或种间数据进行系统发育分析的方法。使用物种形成和/或灭绝的标准模型或其他方法，从所测物种的所有可能系统发育树集合中生成一个样本。然后在每棵可能的树上分析比较数据，以获得这些数据的可能进化统计量的分布。建议将此分布的均值作为感兴趣的真实进化统计量的合理估计。还提出了获得此均值统计量的置信区间和开展假设检验的方法。当物种间的系统发育关系未知，或无法获得以预期性状变化为单位（大多数方法所要求）的系统发育树的分支长度时，该方法可与任何比较方法或系统发育分析技术一起使用。可根据要求提供进行分析的计算机程序。
