Language continuity despite population replacement in Remote Oceania.

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ID: 32208
2018
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Abstract
Recent genomic analyses show that the earliest peoples reaching Remote Oceania-associated with Austronesian-speaking Lapita culture-were almost completely East Asian, without detectable Papuan ancestry. However, Papuan-related genetic ancestry is found across present-day Pacific populations, indicating that peoples from Near Oceania have played a significant, but largely unknown, ancestral role. Here, new genome-wide data from 19 ancient South Pacific individuals provide direct evidence of a so-far undescribed Papuan expansion into Remote Oceania starting ~2,500 yr BP, far earlier than previously estimated and supporting a model from historical linguistics. New genome-wide data from 27 contemporary ni-Vanuatu demonstrate a subsequent and almost complete replacement of Lapita-Austronesian by Near Oceanian ancestry. Despite this massive demographic change, incoming Papuan languages did not replace Austronesian languages. Population replacement with language continuity is extremely rare-if not unprecedented-in human history. Our analyses show that rather than one large-scale event, the process was incremental and complex, with repeated migrations and sex-biased admixture with peoples from the Bismarck Archipelago.
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posth2018languagenature Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Cosimo Posth, Kathrin Nägele, Heidi Colleran, Frédérique Valentin, Stuart Bedford, Kaitip W Kami, Richard Shing, Hallie Buckley, Rebecca Kinaston, Mary Walworth, Geoffrey R Clark, Christian Reepmeyer, James Flexner, Tamara Maric, Johannes Moser, Julia Gresky, Lawrence Kiko, Kathryn J Robson, Kathryn Auckland, Stephen J Oppenheimer, Adrian V S Hill, Alexander J Mentzer, Jana Zech, Fiona Petchey, Patrick Roberts, Choongwon Jeong, Russell D Gray, Johannes Krause, Adam Powell
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Journal nature ecology & evolution
Year 2018
DOI
10.1038/s41559-018-0498-2
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