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Ref ID: 27717
Ref Type: Journal Article
Authors: Lipson, M.
P.-R. Loh,
Patterson, N.
Moorjani, P.
Y.-C. Ko,
Stoneking, M.
Berger, B.
Reich, D.
Title: Reconstructing Austronesian population history in island Southeast Asia
Date: 2014
Source: Nature Communications
DOI: 10.1038/ncomms5689
Abstract: Austronesian languages are spread across half the globe, from Easter Island to Madagascar. Evidence from linguistics and archaeology indicates that the ‘Austronesian expansion,’ which began 4,000–5,000 years ago, likely had roots in Taiwan, but the ancestry of present-day Austronesian-speaking populations remains controversial. Here, we analyse genome-wide data from 56 populations using new methods for tracing ancestral gene flow, focusing primarily on Island Southeast Asia. We show that all sampled Austronesian groups harbour ancestry that is more closely related to aboriginal Taiwanese than to any present-day mainland population. Surprisingly, western Island Southeast Asian populations have also inherited ancestry from a source nested within the variation of present-day populations speaking Austro-Asiatic languages, which have historically been nearly exclusive to the mainland. Thus, either there was once a substantial Austro-Asiatic presence in Island Southeast Asia, or Austronesian speakers migrated to and through the mainland, admixing there before continuing to western Indonesia.
Date Created: 4/12/2016
Volume: 5
Number: 4689
Page Start: 1
Page End: 7