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

Abstract The 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, t...

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Autores principales:	Georgi Hudjashov, Phillip Endicott, Helen Post, Nano Nagle, Simon Y. W. Ho, Daniel J. Lawson, Maere Reidla, Monika Karmin, Siiri Rootsi, Ene Metspalu, Lauri Saag, Richard Villems, Murray P. Cox, R. John Mitchell, Ralph L. Garcia-Bertrand, Mait Metspalu, Rene J. Herrera
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/48b25fe81f454f5c84f7efffa4a36855
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spelling	oai:doaj.org-article:48b25fe81f454f5c84f7efffa4a368552021-12-02T15:09:09ZInvestigating the origins of eastern Polynesians using genome-wide data from the Leeward Society Isles10.1038/s41598-018-20026-82045-2322https://doaj.org/article/48b25fe81f454f5c84f7efffa4a368552018-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-20026-8https://doaj.org/toc/2045-2322Abstract The 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.Georgi HudjashovPhillip EndicottHelen PostNano NagleSimon Y. W. HoDaniel J. LawsonMaere ReidlaMonika KarminSiiri RootsiEne MetspaluLauri SaagRichard VillemsMurray P. CoxR. John MitchellRalph L. Garcia-BertrandMait MetspaluRene J. HerreraNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-12 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Georgi Hudjashov Phillip Endicott Helen Post Nano Nagle Simon Y. W. Ho Daniel J. Lawson Maere Reidla Monika Karmin Siiri Rootsi Ene Metspalu Lauri Saag Richard Villems Murray P. Cox R. John Mitchell Ralph L. Garcia-Bertrand Mait Metspalu Rene J. Herrera Investigating the origins of eastern Polynesians using genome-wide data from the Leeward Society Isles
description	Abstract The 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.
format	article
author	Georgi Hudjashov Phillip Endicott Helen Post Nano Nagle Simon Y. W. Ho Daniel J. Lawson Maere Reidla Monika Karmin Siiri Rootsi Ene Metspalu Lauri Saag Richard Villems Murray P. Cox R. John Mitchell Ralph L. Garcia-Bertrand Mait Metspalu Rene J. Herrera
author_facet	Georgi Hudjashov Phillip Endicott Helen Post Nano Nagle Simon Y. W. Ho Daniel J. Lawson Maere Reidla Monika Karmin Siiri Rootsi Ene Metspalu Lauri Saag Richard Villems Murray P. Cox R. John Mitchell Ralph L. Garcia-Bertrand Mait Metspalu Rene J. Herrera
author_sort	Georgi Hudjashov
title	Investigating the origins of eastern Polynesians using genome-wide data from the Leeward Society Isles
title_short	Investigating the origins of eastern Polynesians using genome-wide data from the Leeward Society Isles
title_full	Investigating the origins of eastern Polynesians using genome-wide data from the Leeward Society Isles
title_fullStr	Investigating the origins of eastern Polynesians using genome-wide data from the Leeward Society Isles
title_full_unstemmed	Investigating the origins of eastern Polynesians using genome-wide data from the Leeward Society Isles
title_sort	investigating the origins of eastern polynesians using genome-wide data from the leeward society isles
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/48b25fe81f454f5c84f7efffa4a36855
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Investigating the origins of eastern Polynesians using genome-wide data from the Leeward Society Isles

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