The Divergence of Chimpanzee Species and Subspecies as Revealed in Multipopulation Isolation-with-Migration Analyses
The Divergence of Chimpanzee Species and Subspecies as Revealed in Multipopulation Isolation-with-Migration Analyses
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DOI：
10.1093/molbev/msp298
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发表时间：
2010-04-01
影响因子：
10.7
通讯作者：
Hey, Jody
中科院分区：
文献类型：
--
作者：
Hey, Jody
倭黑猩猩和普通黑猩猩的三个亚种的分歧进行了检查下的多种群隔离与迁移（IM）模型与来自文献中的73个位点的数据。相对于在采样种群之间进行多个成对分析，具有完整的多种群模型的好处是，完整的模型可以揭示涉及祖先种群的历史基因流。一个例子是，在西部普通黑猩猩亚种与中部和东部普通黑猩猩亚种的祖先之间发现了基因流。对所有四个群体的全面分析的结果与对群体的分析非常一致，并且与以前的研究结果基本相似。倭黑猩猩和普通黑猩猩之间的基底分裂估计为0.93 Ma（0.68- 1.54Ma，95%最高后验密度区间），三个普通黑猩猩种群的祖先在0.46Ma分裂（0.35-0.65），和最近的分裂中部和东部的普通黑猩猩种群在0.093 Ma（0.041-0.157）。种群规模估计大多在5 000至10 000人之间。例外的是普通黑猩猩和倭黑猩猩的祖先的大小，为17，000（8，000 - 28，000）个，以及中部普通黑猩猩及其与东部普通黑猩猩的直系祖先，其有效大小估计为27，000个（16，000 - 44，000）和32，000（19，000 - 54，000）个体。
The divergence of bonobos and three subspecies of the common chimpanzee was examined under a multipopulation isolation-with-migration (IM) model with data from 73 loci drawn from the literature. A benefit of having a full multipopulation model, relative to conducting multiple pairwise analyses between sampled populations, is that a full model can reveal historical gene flow involving ancestral populations. An example of this was found in which gene flow is indicated between the western common chimpanzee subspecies and the ancestor of the central and the eastern common chimpanzee subspecies. The results of a full analysis on all four populations are strongly consistent with analyses on pairs of populations and generally similar to results from previous studies. The basal split between bonobos and common chimpanzees was estimated at 0.93 Ma (0.68-1.54 Ma, 95% highest posterior density interval), with the split among the ancestor of three common chimpanzee populations at 0.46 Ma (0.35-0.65), and the most recent split between central and eastern common chimpanzee populations at 0.093 Ma (0.041-0.157). Population size estimates mostly fell in the range from 5,000 to 10,000 individuals. The exceptions are the size of the ancestor of the common chimpanzee and the bonobo, at 17,000 (8,000-28,000) individuals, and the central common chimpanzee and its immediate ancestor with the eastern common chimpanzee, which have effective size estimates at 27,000 (16,000-44,000) and 32,000 (19,000-54,000) individuals, respectively.