Evolutionary history of modern Samoans

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dc.contributor.author Harris, DN en
dc.contributor.author Kessler, MD en
dc.contributor.author Shetty, AC en
dc.contributor.author Weeks, DE en
dc.contributor.author Minster, RL en
dc.contributor.author Browning, S en
dc.contributor.author Cochrane, Ethan en
dc.contributor.author Deka, R en
dc.contributor.author Hawley, NL en
dc.contributor.author Reupena, MS en
dc.contributor.author Naseri, T en
dc.contributor.author McGarvey, ST en
dc.contributor.author O'Connor, TD en
dc.date.accessioned 2020-06-15T23:04:07Z en
dc.date.issued 2020-04-28 en
dc.identifier.citation Proceedings of the National Academy of Sciences of the United States of America 117(17):9458-9465 28 Apr 2020 en
dc.identifier.issn 0027-8424 en
dc.identifier.uri http://hdl.handle.net/2292/51599 en
dc.description.abstract Archaeological studies estimate the initial settlement of Samoa at 2,750 to 2,880 y ago and identify only limited settlement and human modification to the landscape until about 1,000 to 1,500 y ago. At this point, a complex history of migration is thought to have begun with the arrival of people sharing ancestry with Near Oceanic groups (i.e., Austronesian-speaking and Papuan-speaking groups), and was then followed by the arrival of non-Oceanic groups during European colonialism. However, the specifics of this peopling are not entirely clear from the archaeological and anthropological records, and is therefore a focus of continued debate. To shed additional light on the Samoan population history that this peopling reflects, we employ a population genetic approach to analyze 1,197 Samoan high-coverage whole genomes. We identify population splits between the major Samoan islands and detect asymmetrical gene flow to the capital city. We also find an extreme bottleneck until about 1,000 y ago, which is followed by distinct expansions across the islands and subsequent bottlenecks consistent with European colonization. These results provide for an increased understanding of Samoan population history and the dynamics that inform it, and also demonstrate how rapid demographic processes can shape modern genomes. en
dc.language English en
dc.publisher National Academy of Sciences en
dc.relation.ispartofseries Proceedings of the National Academy of Sciences of the United States of America en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. en
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm en
dc.rights.uri https://www.pnas.org/page/subscriptions/open-access en
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/4.0/ en
dc.subject Science & Technology en
dc.subject Multidisciplinary Sciences en
dc.subject Science & Technology - Other Topics en
dc.subject genetically understudied populations en
dc.subject Oceania en
dc.subject Austronesian en
dc.subject rare variants en
dc.subject fine-scale population structure en
dc.subject CHRONOLOGY en
dc.subject INFERENCE en
dc.subject ADMIXTURE en
dc.subject INSIGHTS en
dc.subject PACIFIC en
dc.subject COLONIZATION en
dc.subject ASSOCIATION en
dc.subject ANCESTRY en
dc.title Evolutionary history of modern Samoans en
dc.type Journal Article en
dc.identifier.doi 10.1073/pnas.1913157117 en
pubs.issue 17 en
pubs.begin-page 9458 en
pubs.volume 117 en
dc.rights.holder Copyright: The author en
pubs.author-url https://www.pnas.org/content/117/17/9458 en
pubs.end-page 9465 en
pubs.publication-status Published en
dc.rights.accessrights http://purl.org/eprint/accessRights/OpenAccess en
pubs.subtype Article en
pubs.elements-id 801819 en
pubs.org-id Arts en
pubs.org-id Social Sciences en
pubs.org-id Anthropology en
dc.identifier.eissn 1091-6490 en
pubs.record-created-at-source-date 2020-06-16 en

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