Soares, Pedro, Rito, Teresa, Trejaut, Jean, Mormina, Maru, Hill, Catherine, Tinkler-Hundal, Emma, Braid, Michelle, Clarke, Douglas, Loo, Jun-Hun, Thomson, Noel, Denham, Tim, Donohue, Mark, Macaulay, Vincent, Lin, Marie, Oppenheimer, Stephen and Richards, Martin B. (2011) Ancient Voyaging and Polynesian Origins. The American Journal of Human Genetics, 88 (2). pp. 239-247. ISSN 00029297Metadata only available from this repository.
The Polynesian motif defines a lineage of human mtDNA that is restricted to Austronesian-speaking populations and is almost fixed in Polynesians. It is widely thought to support a rapid dispersal of maternal lineages from Taiwan 4000 years ago (4 ka), but the chronological resolution of existing control-region data is poor, and an East Indonesian origin has also been proposed. By analyzing 157 complete mtDNA genomes, we show that the motif itself most likely originated >6 ka in the vicinity of the Bismarck Archipelago, and its immediate ancestor is >8 ka old and virtually restricted to Near Oceania. This indicates that Polynesian maternal lineages from Island Southeast Asia gained a foothold in Near Oceania much earlier than dispersal from either Taiwan or Indonesia 34 ka would predict. However, we find evidence in minor lineages for more recent two-way maternal gene flow between Island Southeast Asia and Near Oceania, likely reflecting movements along a voyaging corridor between them, as previously proposed on archaeological grounds. Small-scale mid-Holocene movements from Island Southeast Asia likely transmitted Austronesian languages to the long-established Southeast Asian colonies in the Bismarcks carrying the Polynesian motif, perhaps also providing the impetus for the expansion into Polynesia.
|Subjects:||D History General and Old World > DU Oceania (South Seas)
G Geography. Anthropology. Recreation > GF Human ecology. Anthropogeography
|Schools:||School of Applied Sciences|
|Depositing User:||Sara Taylor|
|Date Deposited:||10 May 2011 10:53|
|Last Modified:||26 Jul 2012 10:06|
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