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Originally published as Genetics Published Articles Ahead of Print on February 19, 2006.
Genetics, Vol. 172, 2431-2439, April 2006, Copyright © 2006
doi:10.1534/genetics.105.054270
Male Demography in East Asia: A North–South Contrast in Human Population Expansion Times
Yali Xue*,
,
,
Tatiana Zerjal*,,
Weidong Bao,
,
Suling Zhu,,
Qunfang Shu,
Jiujin Xu,
Ruofu Du,
Songbin Fu,
Pu Li,
Matthew E. Hurles*,
Huanming Yang** and
Chris Tyler-Smith*,,1
* Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, CB10 1SA, United Kingdom, Department of Medical Biology, Harbin Medical University, Harbin 150086, China, Department of Biochemistry, University of Oxford, Oxford OX1 3QU, United Kingdom, Institute of Genetics, Chinese Academy of Sciences, Beijing 100101, China and ** Beijing Genomics Institute, Beijing 101300, China
1 Corresponding author: Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, CB10 1SA, United Kingdom.
E-mail: cts{at}sanger.ac.uk
The human population has increased greatly in size in the last 100,000 years, but the initial stimuli to growth, the times when expansion started, and their variation between different parts of the world are poorly understood. We have investigated male demography in East Asia, applying a Bayesian full-likelihood analysis to data from 988 men representing 27 populations from China, Mongolia, Korea, and Japan typed with 45 binary and 16 STR markers from the Y chromosome. According to our analysis, the northern populations examined all started to expand in number between 34 (18–68) and 22 (12–39) thousand years ago (KYA), before the last glacial maximum at 21–18 KYA, while the southern populations all started to expand between 18 (6–47) and 12 (1–45) KYA, but then grew faster. We suggest that the northern populations expanded earlier because they could exploit the abundant megafauna of the "Mammoth Steppe," while the southern populations could increase in number only when a warmer and more stable climate led to more plentiful plant resources such as tubers.
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