RT info:eu-repo/semantics/article
T1 The genomic landscape of contemporary western Remote Oceanians
A1 Arauna, Lara R.
A1 Bergstedt, Jacob
A1 Choin, Jeremy
A1 Mendoza-Revilla, Javier
A1 Harmant, Christine
A1 Roux, Maguelonne
A1 Mas Sandoval, Alex
A1 Lémée, Laure
A1 Colleran, Heidi
A1 François, Alexandre
A1 Valentin, Frédérique
A1 Cassar, Olivier
A1 Gessain, Antoine
A1 Quintana-Murci, Lluis
A1 Patin, Etienne
K1 Pacific
K1 Remote Oceania
K1 Vanuatu
K1 Lapita
K1 Peopling
K1 Migrations
K1 Admixture
K1 Genetics
K1 Assortative mating
K1 Residence rules
K1 Genética de poblaciones
K1 Population genetics
AB 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.
PB Cell Press
SN 0960-9822
YR 2022
FD 2022-11
LK https://hdl.handle.net/10259/11434
UL https://hdl.handle.net/10259/11434
LA eng
NO L.R.A. was funded by a Pasteur-Roux-Cantarini fellowship from the Institut Pasteur. The laboratory of Human Evolutionary Genetics is supported by the Institut Pasteur, the Collège de France, the CNRS, the Fondation Allianz-Institut de France, the French Government’s Investissement d’Avenir programme, Laboratoires d’Excellence “Integrative Biology of Emerging Infectious Diseases” (ANR-10-LABX-62-IBEID) and “Milieu Intérieur” (ANR-10-LABX-69-01), the Fondation de France (no. 00106080), the Fondation pour la Recherche Médicale (Equipe FRM DEQ20180339214), and the French National Research Agency (ANR-19-CE35-0005).
DS Repositorio Institucional de la Universidad de Burgos
RD 06-jun-2026