Genome-wide SNP analysis reveals population structure and demographic history of the ryukyu islanders in the southern part of the Japanese archipelago.

Abstract

The Ryukyu Islands are located to the southwest of the Japanese archipelago. Archaeological evidence has revealed the existence of prehistoric cultural differentiation between the northern Ryukyu islands of Amami and Okinawa, and the southern Ryukyu islands of Miyako and Yaeyama. To examine a genetic subdivision in the Ryukyu Islands, we conducted genome-wide single nucleotide polymorphism typing of inhabitants from the Okinawa Islands, the Miyako Islands, and the Yaeyama Islands. Principal component and cluster analyses revealed genetic differentiation among the island groups, especially between Okinawa and Miyako. No genetic affinity was observed between aboriginal Taiwanese and any of the Ryukyu populations. The genetic differentiation observed between the inhabitants of the Okinawa Islands and the Miyako Islands is likely to have arisen due to genetic drift rather than admixture with people from neighboring regions. Based on the observed genetic differences, the divergence time between the inhabitants of Okinawa and Miyako islands was dated to the Holocene. These findings suggest that the Pleistocene inhabitants, whose bones have been found on the southern Ryukyu Islands, did not make a major genetic contribution, if any, to the present-day inhabitants of the southern Ryukyu Islands.

DOI: 10.1093/molbev/msu230

10 Figures and Tables

0200400600201520162017
Citations per Year

375 Citations

Semantic Scholar estimates that this publication has 375 citations based on the available data.

See our FAQ for additional information.

Cite this paper

@article{Sato2014GenomewideSA, title={Genome-wide SNP analysis reveals population structure and demographic history of the ryukyu islanders in the southern part of the Japanese archipelago.}, author={Takehiro Sato and Shigeki Nakagome and Chiaki Watanabe and Kyoko Yamaguchi and Akira Kawaguchi and Kae Koganebuchi and Kuniaki Haneji and Tetsutaro Yamaguchi and Tsunehiko Hanihara and Ken Yamamoto and Hajime Ishida and Shuhei Mano and Ryosuke Kimura and Hiroki Oota}, journal={Molecular biology and evolution}, year={2014}, volume={31 11}, pages={2929-40} }