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

Sato, T and Nakagome, S and Watanabe, C and Yamaguchi, K and Kawaguchi, A and Koganebuchi, K and Haneji, K and Yamaguchi, T and Hanihara, T and Yamamoto, K and Ishida, H and Mano, S and Kimura, R and Oota, H (2014) Genome-wide SNP analysis reveals population structure and demographic history of the ryukyu islanders in the southern part of the Japanese archipelago. Molecular Biology and Evolution, 31 (11). pp. 2929-2940. ISSN 1537-1719

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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.

Item Type: Article
Additional Information: This article has been accepted for publication in Molecular Biology and Evolution Published by Oxford University Press.
Uncontrolled Keywords: 0604 Genetics, 0603 Evolutionary Biology, 0601 Biochemistry And Cell Biology
Subjects: Q Science > QH Natural history > QH426 Genetics
Divisions: Natural Sciences and Psychology
Publisher: Oxford University Press (OUP)
Related URLs:
Date Deposited: 18 Oct 2017 11:34
Last Modified: 18 Oct 2017 11:34
DOI or Identification number: 10.1093/molbev/msu230
URI: http://researchonline.ljmu.ac.uk/id/eprint/2331

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