Khoisan hunter-gatherers have been the largest population throughout most of modern-human demographic history
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
03/11/2015
03/11/2015
01/12/2014
|
Resumo |
The Khoisan people from Southern Africa maintained ancient lifestyles as hunter-gatherers or pastoralists up to modern times, though little else is known about their early history. Here we infer early demographic histories of modern humans using whole-genome sequences of five Khoisan individuals and one Bantu speaker. Comparison with a 420 K SNP data set from worldwide individuals demonstrates that two of the Khoisan genomes from the Ju/'hoansi population contain exclusive Khoisan ancestry. Coalescent analysis shows that the Khoisan and their ancestors have been the largest populations since their split with the non-Khoisan population similar to 100-150 kyr ago. In contrast, the ancestors of the non-Khoisan groups, including Bantu-speakers and non-Africans, experienced population declines after the split and lost more than half of their genetic diversity. Paleoclimate records indicate that the precipitation in southern Africa increased similar to 80-100 kyr ago while west-central Africa became drier. We hypothesize that these climate differences might be related to the divergent-ancient histories among human populations. |
Formato |
1-8 |
Identificador |
http://www.nature.com/ncomms/2014/141204/ncomms6692/full/ncomms6692.html Nature Communications. London: Nature Publishing Group, v. 5, p. 1-8, 2014. 2041-1723 http://hdl.handle.net/11449/130054 http://dx.doi.org/10.1038/ncomms6692 WOS:000347228600006 WOS000347228600006.pdf |
Idioma(s) |
eng |
Publicador |
Nature Publishing Group |
Relação |
Nature Communications |
Direitos |
openAccess |
Tipo |
info:eu-repo/semantics/article |