MBE Advance Access originally published online on March 21, 2008
Molecular Biology and Evolution 2008 25(6):1209-1218; doi:10.1093/molbev/msn068
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Research Articles |
Climate Change and Postglacial Human Dispersals in Southeast Asia
,1
* Institute of Integrative and Comparative Biology, Faculty of Biological Sciences, University of Leeds, Leeds, UK
Transfusion Medicine and Anthropology Laboratory, Mackay Memorial Hospital, Tamsui, Taiwan
Leverhulme Centre for Human Evolutionary Studies, University of Cambridge, Cambridge, UK
Department of Health, Tainan Hospital, Tainan City, Taiwan
|| The Estonian Biocentre, Tartu, Estonia
¶ Department of Forensic and Chemical Sciences, Anglia Ruskin University, Cambridge, UK
# Department of Statistics, University of Glasgow, Glasgow, UK
** School of Archaeology and Anthropology, The Australian National University, Canberra, Australia
School of Anthropology, University of Oxford, Oxford, UK
E-mail: m.b.richards{at}leeds.ac.uk
Accepted for publication March 17, 2008.
Modern humans have been living in Island Southeast Asia (ISEA) for at least 50,000 years. Largely because of the influence of linguistic studies, however, which have a shallow time depth, the attention of archaeologists and geneticists has usually been focused on the last 6,000 years—in particular, on a proposed Neolithic dispersal from China and Taiwan. Here we use complete mitochondrial DNA (mtDNA) genome sequencing to spotlight some earlier processes that clearly had a major role in the demographic history of the region but have hitherto been unrecognized. We show that haplogroup E, an important component of mtDNA diversity in the region, evolved in situ over the last 35,000 years and expanded dramatically throughout ISEA around the beginning of the Holocene, at the time when the ancient continent of Sundaland was being broken up into the present-day archipelago by rising sea levels. It reached Taiwan and Near Oceania more recently, within the last 
8,000 years. This suggests that global warming and sea-level rises at the end of the Ice Age, 15,000–7,000 years ago, were the main forces shaping modern human diversity in the region.
Key Words: complete mtDNA genomes • Island Southeast Asia • Neolithic • postglacial • late glacial
1 These authors contributed equally to this work.
Connie Mulligan, Associate Editor
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