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The genomic landscape of contemporary western Remote Oceanians.

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dc.contributor.author Arauna, Lara R
dc.contributor.author Bergstedt, Jacob
dc.contributor.author Choin, Jeremy
dc.contributor.author Mendoza-Revilla, Javier
dc.contributor.author Harmant, Christine
dc.contributor.author Roux, Maguelonne
dc.contributor.author Mas-Sandoval, Alex
dc.contributor.author Lemee, Laure
dc.contributor.author Colleran, Heidi
dc.contributor.author Francois, Alexandre
dc.contributor.author Valentin, Frederique
dc.contributor.author Cassar, Olivier
dc.contributor.author Gessain, Antoine
dc.contributor.author Quintana-Murci, Lluis
dc.contributor.author Patin, Etienne
dc.date.accessioned 2022-10-12T18:25:59Z
dc.date.available 2022-10-12T18:25:59Z
dc.date.issued 2022
dc.identifier.uri https://hdl.handle.net/20.500.12866/12395
dc.description.abstract The Vanuatu archipelago served as a gateway to Remote Oceania during one of the most extensive human migrations to uninhabited lands ∼3,000 years ago. Ancient DNA studies suggest an initial settlement by East Asian-related peoples that was quickly followed by the arrival of Papuan-related populations, leading to a major population turnover. Yet there is uncertainty over the population processes and the sociocultural factors that have shaped the genomic diversity of ni-Vanuatu, who present nowadays among the world’s highest linguistic and cultural diversity. Here, we report new genome-wide data for 1,433 contemporary ni-Vanuatu from 29 different islands, including 287 couples. We find that ni-Vanuatu derive their East Asian- and Papuan-related ancestry from the same source populations and descend from relatively synchronous, sex-biased admixture events that occurred ∼1,700–2,300 years ago, indicating a peopling history common to the whole archipelago. However, East Asian-related ancestry proportions differ markedly across islands, suggesting that the Papuan-related population turnover was geographically uneven. Furthermore, we detect Polynesian ancestry arriving ∼600–1,000 years ago to Central and South Vanuatu in both Polynesian-speaking and non-Polynesian-speaking populations. Last, we provide evidence for a tendency of spouses to carry similar genetic ancestry, when accounting for relatedness avoidance. The signal is not driven by strong genetic effects of specific loci or trait-associated variants, suggesting that it results instead from social assortative mating. Altogether, our findings provide an insight into both the genetic history of ni-Vanuatu populations and how sociocultural processes have shaped the diversity of their genomes. en_US
dc.language.iso eng
dc.publisher Elsevier
dc.relation.ispartofseries CB
dc.rights info:eu-repo/semantics/restrictedAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
dc.subject Pacific en_US
dc.subject Remote Oceania en_US
dc.subject Vanuatu en_US
dc.subject Lapita en_US
dc.subject peopling en_US
dc.subject migrations en_US
dc.subject admixture en_US
dc.subject genetics en_US
dc.subject assortative mating en_US
dc.subject residence rules en_US
dc.title The genomic landscape of contemporary western Remote Oceanians. en_US
dc.type info:eu-repo/semantics/article
dc.identifier.doi https://doi.org/10.1016/j.cub.2022.08.055
dc.relation.issn 1879-0445


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