TY - JOUR
T1 - Ancient genomes from the last three millennia support multiple human dispersals into Wallacea
AU - Oliveira, I S
AU - Nägele, Kathrin
AU - Carlhoff, Selina
AU - Pugach, Irina
AU - Koesbardiati, Toetik
AU - Hübner, Alexander
AU - Angermeyer, Mattias
AU - Oktaviana, Adhi Agus
AU - Takenaka, Masami
AU - Katagiri, Chiaka
AU - Murti, Delta Bayu
AU - Putri, Rizky Sugianto
AU - Mahirta, Mahirta
AU - Petchey, Fiona
AU - Higham, Thomas
AU - Higham, C.F.W.
AU - O'Connor, Susan
AU - Hawkins, Stuart
AU - Kinaston, Rebecca
AU - Bellwood, Peter
AU - Ono, Rintaro
AU - Powell, Adam
AU - Krause, Johannes
AU - Posth, Cosimo
AU - Stoneking, Mark
PY - 2022
Y1 - 2022
N2 - 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.
AB - 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.
U2 - 10.1038/s41559-022-01775-2
DO - 10.1038/s41559-022-01775-2
M3 - Article
VL - 6
SP - 1
EP - 19
JO - Nature Ecology & Evolution
JF - Nature Ecology & Evolution
ER -