Investigating the origins of eastern Polynesians using genome-wide data from the Leeward Society Isles

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dc.citation.volume8
dc.contributor.authorHudjashov G
dc.contributor.authorEndicott P
dc.contributor.authorPost H
dc.contributor.authorNagle N
dc.contributor.authorHo SYW
dc.contributor.authorLawson DJ
dc.contributor.authorReidla M
dc.contributor.authorKarmin M
dc.contributor.authorRootsi S
dc.contributor.authorMetspalu E
dc.contributor.authorSaag L
dc.contributor.authorVillems R
dc.contributor.authorCox MP
dc.contributor.authorMitchell RJ
dc.contributor.authorGarcia-Bertrand RL
dc.contributor.authorMetspalu M
dc.contributor.authorHerrera RJ
dc.date.available2018-01-29
dc.date.available2018-01-11
dc.date.issued2018-01-29
dc.description.abstractThe debate concerning the origin of the Polynesian speaking peoples has been recently reinvigorated by genetic evidence for secondary migrations to western Polynesia from the New Guinea region during the 2nd millennium BP. Using genome-wide autosomal data from the Leeward Society Islands, the ancient cultural hub of eastern Polynesia, we find that the inhabitants' genomes also demonstrate evidence of this episode of admixture, dating to 1,700-1,200 BP. This supports a late settlement chronology for eastern Polynesia, commencing ~1,000 BP, after the internal differentiation of Polynesian society. More than 70% of the autosomal ancestry of Leeward Society Islanders derives from Island Southeast Asia with the lowland populations of the Philippines as the single largest potential source. These long-distance migrants into Polynesia experienced additional admixture with northern Melanesians prior to the secondary migrations of the 2nd millennium BP. Moreover, the genetic diversity of mtDNA and Y chromosome lineages in the Leeward Society Islands is consistent with linguistic evidence for settlement of eastern Polynesia proceeding from the central northern Polynesian outliers in the Solomon Islands. These results stress the complex demographic history of the Leeward Society Islands and challenge phylogenetic models of cultural evolution predicated on eastern Polynesia being settled from Samoa.
dc.description.publication-statusPublished
dc.identifierhttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000423430400035&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=c5bb3b2499afac691c2e3c1a83ef6fef
dc.identifierARTN 1823
dc.identifier.citationSCIENTIFIC REPORTS, 2018, 8
dc.identifier.doi10.1038/s41598-018-20026-8
dc.identifier.elements-id399495
dc.identifier.harvestedMassey_Dark
dc.identifier.issn2045-2322
dc.relation.isPartOfSCIENTIFIC REPORTS
dc.rightsOpen Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
dc.titleInvestigating the origins of eastern Polynesians using genome-wide data from the Leeward Society Isles
dc.typeJournal article
pubs.notesNot known
pubs.organisational-group/Massey University
pubs.organisational-group/Massey University/College of Sciences
pubs.organisational-group/Massey University/College of Sciences/School of Fundamental Sciences
pubs.organisational-group/Massey University/College of Sciences/School of Natural Sciences
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