Testing modern human out-of-Africa dispersal models and implications for modern human origins
Testing modern human out-of-Africa dispersal models and implications for modern human origins
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DOI：
10.1016/j.jhevol.2015.06.008
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发表时间：
2015-10-01
影响因子：
3.2
通讯作者：
Harvati, Katerina
中科院分区：
文献类型：
--
作者：
Reyes-Centeno, Hugo;Hubbe, Mark;Harvati, Katerina
现代人类从非洲向外扩张的过程对于理解现存种群的遗传和表型结构具有重要意义。虽然激烈的争论，主要的假设集中在一个单一的分散或多个分散的大陆。在这里，我们使用来自非洲和黎凡特的人类化石记录，以及一个非常大的数据集，从亚洲采样的全新世人类头骨，模型的祖先后代关系沿着假设的传播路线。我们测试的空间和时间预测的竞争出非洲模型，通过评估人口之间的地理距离和人口分化的措施，从定量颅表型数据的相关性。我们的研究结果支持了一个模型，即现存的澳大拉西亚人是早期解剖学现代人类最初从非洲扩散出去的后代，而所有其他人群都是后来移民潮的后代。我们的研究结果对于理解现代人类起源和多样性的复杂性具有重要意义。(C)2015爱思唯尔有限公司版权所有。
The modern human expansion process out of Africa has important implications for understanding the genetic and phenotypic structure of extant populations. While intensely debated, the primary hypotheses focus on either a single dispersal or multiple dispersals out of the continent. Here, we use the human fossil record from Africa and the Levant, as well as an exceptionally large dataset of Holocene human crania sampled from Asia, to model ancestor descendant relationships along hypothetical dispersal routes. We test the spatial and temporal predictions of competing out-of-Africa models by assessing the correlation of geographical distances between populations and measures of population differentiation derived from quantitative cranial phenotype data. Our results support a model in which extant Australo-Melanesians are descendants of an initial dispersal out of Africa by early anatomically modern humans, while all other populations are descendants of a later migration wave. Our results have implications for understanding the complexity of modern human origins and diversity. (C) 2015 Elsevier Ltd. All rights reserved.