Ref ID:	37591
Ref Type:	Journal Article
Authors:	Oliveira, Sandra Nägele, Kathrin Carlhoff, Selina Pugach, Irina Koesbardiati, Toetik Hübner, Alexander Meyer, Matthias Oktaviana, Adhi Agus Takenaka, Masami Katagiri, Chiaki Murti, Delta Bayu Putri, Rizky Sugianto Mahirta Petchey, Fiona Higham, Thomas Higham, Charles F. W. O’Connor, Sue Hawkins, Stuart Kinaston, Rebecca Bellwood, Peter Ono, Rintaro Powell, Adam Krause, Johannes Posth, Cosimo Stoneking, Mark
Title:	Ancient genomes from the last three millennia support multiple human dispersals into Wallacea
Date:	2022
Source:	Nature Ecology & Evolution
DOI:	10.1038/s41559-022-01775-2
Abstract:	Previous research indicates that human genetic diversity in Wallacea—islands in present-day Eastern Indonesia and Timor-Leste that were never part of the Sunda or Sahul continental shelves—has been shaped by complex interactions between migrating Austronesian farmers and indigenous hunter–gatherer communities. Yet, inferences based on present-day groups proved insufficient to disentangle this region’s demographic movements and admixture timings. Here, we investigate the spatio-temporal patterns of variation in Wallacea based on genome-wide data from 16 ancient individuals (2600–250 years BP) from the North Moluccas, Sulawesi and East Nusa Tenggara. While ancestry in the northern islands primarily reflects contact between Austronesian- and Papuan-related groups, ancestry in the southern islands reveals additional contributions from Mainland Southeast Asia that seem to predate the arrival of Austronesians. Admixture time estimates further support multiple and/or continuous admixture involving Papuan- and Asian-related groups throughout Wallacea. Our results clarify previously debated times of admixture and suggest that the Neolithic dispersals into Island Southeast Asia are associated with the spread of multiple genetic ancestries.
Volume:	6
Page Start:	1024
Page End:	1034