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Ref ID: 26621
Ref Type: Journal Article
Authors: Lipson, Mark
Skoglund, Pontus
Spriggs, Matthew
Valentin, Frederique
Bedford, Stuart
Shing, Richard
Buckley, Hallie
Phillip, Iarawai
Ward, Graeme K.
Mallick, Swapan
Rohland, Nadin
Broomandkhoshbacht, Nasreen
Cheronet, Olivia
Title: Population turnover in Remote Oceania shortly after initial settlement
Date: 2018
Source: Current Biology
DOI: 10.1016/j.cub.2018.02.051
Notes: Authors continued: Ferry, Matthew
Harper, Thomas K.
Michel, Megan
Oppenheimer, Jonas
Sirak, Kendra
Stewardson, Kristin
Auckland, Kathryn
Hill, Adrian V. S.
Maitland, Kathryn
Oppenheimer, Steven J.
Parks, Tom
Robson, Kathryn
Williams, Thomas N.
Kennett, Douglas J.
Mentzer, Alexander J.
Pinhasi, Ron
Reich, David
Abstract: Ancient DNA from Vanuatu and Tonga dating to about 2,900–2,600 years ago (before present, BP) has revealed that the “First Remote Oceanians” associated with the Lapita archaeological culture were directly descended from the population that, beginning around 5000 BP, spread Austronesian languages from Taiwan to the Philippines, western Melanesia, and eventually Remote Oceania. Thus, ancestors of the First Remote Oceanians must have passed by the Papuan-ancestry populations they encountered in New Guinea, the Bismarck Archipelago, and the Solomon Islands with minimal admixture [1]. However, all present-day populations in Near and Remote Oceania harbor >25% Papuan ancestry, implying that additional eastward migration must have occurred. We generated genome-wide data for 14 ancient individuals from Efate and Epi Islands in Vanuatu from 2900–150 BP, as well as 185 present-day individuals from 18 islands. We find that people of almost entirely Papuan ancestry arrived in Vanuatu by around 2300 BP, most likely reflecting migrations a few hundred years earlier at the end of the Lapita period, when there is also evidence of changes in skeletal morphology and cessation of long-distance trade between Near and Remote Oceania [2, 3]. Papuan ancestry was subsequently diluted through admixture but remains at least 80%–90% in most islands. Through a fine-grained analysis of ancestry profiles, we show that the Papuan ancestry in Vanuatu derives from the Bismarck Archipelago rather than the geographically closer Solomon Islands. However, the Papuan ancestry in Polynesia—the most remote Pacific islands—derives from different sources, documenting a third stream of migration from Near to Remote Oceania.
Date Created: 5/8/2019
Volume: 28
Number: 7
Page Start: 1157
Page End: 1165