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タイトル	en Paternal phylogeographic structure of the brown bear (Ursus arctos) in northeastern Asia and the effect of male-mediated gene flow to insular populations
作成者	en Hirata, Daisuke en Mano, Tsutomu en Abramov, Alexei V. en Baryshnikov, Gennady F. en Kosintsev, Pavel A. en Murata, Koichi en Masuda, Ryuichi NRID 1000080192748
アクセス権	open access
権利情報	http://creativecommons.org/licenses/by/4.0/ en Creative Commons Attribution 4.0 International
主題	Other en Brown bear Other en Hokkaido Other en Phylogeography Other en Sex-biased dispersal Other en Ursus arctos Other en Y-chromosomal DNA NDC 480
内容注記	Abstract en Background: Sex-biased dispersal is widespread among mammals, including the brown bear (Ursus arctos). Previous phylogeographic studies of the brown bear based on maternally inherited mitochondrial DNA have shown intraspecific genetic structuring around the northern hemisphere. The brown bears on Hokkaido Island, northern Japan, comprise three distinct maternal lineages that presumably immigrated to the island from the continent in three different periods. Here, we investigate the paternal genetic structure across northeastern Asia and assess the connectivity among and within intraspecific populations in terms of male-mediated gene flow. Results: We analyzed paternally inherited Y-chromosomal DNA sequence data and Y-linked microsatellite data of 124 brown bears from Hokkaido, the southern Kuril Islands (Kunashiri and Etorofu), Sakhalin, and continental Eurasia (Kamchatka Peninsula, Ural Mountains, European Russia, and Tibet). The Hokkaido brown bear population is paternally differentiated from, and lacked recent genetic connectivity with, the continental Eurasian and North American populations. We detected weak spatial genetic structuring of the paternal lineages on Hokkaido, which may have arisen through male-mediated gene flow among natal populations. In addition, our results suggest that the different dispersal patterns between male and female brown bears, combined with the founder effect and subsequent genetic drift, contributed to the makeup of the Etorofu Island population, in which the maternal and paternal lineages show different origins. Conclusions: Brown bears on Hokkaido and the adjacent southern Kuril Islands experienced different maternal and paternal evolutionary histories. Our results indicate that sex-biased dispersal has played a significant role in the evolutionary history of the brown bear in continental populations and in peripheral insular populations, such as on Hokkaido, the southern Kuril Islands, and Sakhalin.
出版者	en BioMed Central
日付	Issued2017-11-30
言語	eng
資源タイプ	journal article
出版タイプ	VoR
資源識別子	HDL http://hdl.handle.net/2115/68296
関連	isIdenticalTo DOI https://doi.org/10.1186/s40851-017-0084-5
収録誌情報	PISSN 2056-306X en Zoological Letters 巻3 開始ページ21
ファイル	fulltext Figure S1.pdf 325.38 KB (application/pdf) Issued2017-11-30 fulltext Figure S2.pdf 330.32 KB (application/pdf) Issued2017-11-30 fulltext Figure S3.pdf 383.11 KB (application/pdf) Issued2017-11-30 fulltext Figure S4.pdf 3.76 MB (application/pdf) Issued2017-11-30 fulltext Figure S5.pdf 411.47 KB (application/pdf) Issued2017-11-30 fulltext Table S1.xls 88.0 KB (application/vnd.ms-excel) Issued2017-11-30 fulltext Table S2.xls 68.5 KB (application/vnd.ms-excel) Issued2017-11-30 fulltext Table S3.xls 64.0 KB (application/vnd.ms-excel) Issued2017-11-30 fulltext Table S4.xls 63.5 KB (application/vnd.ms-excel) Issued2017-11-30 fulltext Zool Lett3 21.pdf 789.48 KB (application/pdf) Issued2017-11-30 fulltext additionalfile1 Figure S1-S5.pdf 70.13 KB (application/pdf) Issued2017-11-30
コンテンツ更新日時	2023-07-26