Demographic History of the Brown Bear (Ursus arctos) on Hokkaido Island, Japan, Based on Whole-Genomic Sequence Analysis
Previous studies of the brown bear (Ursus arctos) on Hokkaido Island, Japan, have detected three geographically distinct subpopulations representing different mitochondrial lineages and shown that gene flow between subpopulations has occurred due to male biased dispersal. In this study, we determine...
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fthokunivhus:oai:eprints.lib.hokudai.ac.jp:2115/83915 2023-05-15T18:41:52+02:00 Demographic History of the Brown Bear (Ursus arctos) on Hokkaido Island, Japan, Based on Whole-Genomic Sequence Analysis Endo, Yu Osada, Naoki Mano, Tsutomu Masuda, Ryuichi http://hdl.handle.net/2115/83915 https://doi.org/10.1093/gbe/evab195 eng eng Oxford University Press http://hdl.handle.net/2115/83915 Genome biology and evolution, 13(9): evab195 http://dx.doi.org/10.1093/gbe/evab195 admixture autosome genomics isolation by distance phylogeny 467 article fthokunivhus https://doi.org/10.1093/gbe/evab195 2022-11-18T01:06:46Z Previous studies of the brown bear (Ursus arctos) on Hokkaido Island, Japan, have detected three geographically distinct subpopulations representing different mitochondrial lineages and shown that gene flow between subpopulations has occurred due to male biased dispersal. In this study, we determined whole-genomic sequences for six Hokkaido brown bears and analyzed these data along with previously published genomic sequences of 17 brown bears from other parts of the world. We found that the Hokkaido population is genetically distinct from the other populations, keeping genetic diversity higher than the endangered populations in western Europe but lower than most populations on the continents. A reconstruction of historical demography showed no increase in population size for the Hokkaido population during the Eemian interglacial period (130,000-114,000 years ago). In a phylogenetic analysis of the autosomal data, the Hokkaido population formed a Glade distinct from North American and European populations, showing that it has maintained genetic diversity independently from continental populations following geographical isolation on the island. This autosomal genetic similarity contrasts with the geographically separate mitochondrial lineages on Hokkaido and indicates the occurrence of male -driven gene flow between subpopulations. Article in Journal/Newspaper Ursus arctos Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) Genome Biology and Evolution 13 9 |
institution |
Open Polar |
collection |
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) |
op_collection_id |
fthokunivhus |
language |
English |
topic |
admixture autosome genomics isolation by distance phylogeny 467 |
spellingShingle |
admixture autosome genomics isolation by distance phylogeny 467 Endo, Yu Osada, Naoki Mano, Tsutomu Masuda, Ryuichi Demographic History of the Brown Bear (Ursus arctos) on Hokkaido Island, Japan, Based on Whole-Genomic Sequence Analysis |
topic_facet |
admixture autosome genomics isolation by distance phylogeny 467 |
description |
Previous studies of the brown bear (Ursus arctos) on Hokkaido Island, Japan, have detected three geographically distinct subpopulations representing different mitochondrial lineages and shown that gene flow between subpopulations has occurred due to male biased dispersal. In this study, we determined whole-genomic sequences for six Hokkaido brown bears and analyzed these data along with previously published genomic sequences of 17 brown bears from other parts of the world. We found that the Hokkaido population is genetically distinct from the other populations, keeping genetic diversity higher than the endangered populations in western Europe but lower than most populations on the continents. A reconstruction of historical demography showed no increase in population size for the Hokkaido population during the Eemian interglacial period (130,000-114,000 years ago). In a phylogenetic analysis of the autosomal data, the Hokkaido population formed a Glade distinct from North American and European populations, showing that it has maintained genetic diversity independently from continental populations following geographical isolation on the island. This autosomal genetic similarity contrasts with the geographically separate mitochondrial lineages on Hokkaido and indicates the occurrence of male -driven gene flow between subpopulations. |
format |
Article in Journal/Newspaper |
author |
Endo, Yu Osada, Naoki Mano, Tsutomu Masuda, Ryuichi |
author_facet |
Endo, Yu Osada, Naoki Mano, Tsutomu Masuda, Ryuichi |
author_sort |
Endo, Yu |
title |
Demographic History of the Brown Bear (Ursus arctos) on Hokkaido Island, Japan, Based on Whole-Genomic Sequence Analysis |
title_short |
Demographic History of the Brown Bear (Ursus arctos) on Hokkaido Island, Japan, Based on Whole-Genomic Sequence Analysis |
title_full |
Demographic History of the Brown Bear (Ursus arctos) on Hokkaido Island, Japan, Based on Whole-Genomic Sequence Analysis |
title_fullStr |
Demographic History of the Brown Bear (Ursus arctos) on Hokkaido Island, Japan, Based on Whole-Genomic Sequence Analysis |
title_full_unstemmed |
Demographic History of the Brown Bear (Ursus arctos) on Hokkaido Island, Japan, Based on Whole-Genomic Sequence Analysis |
title_sort |
demographic history of the brown bear (ursus arctos) on hokkaido island, japan, based on whole-genomic sequence analysis |
publisher |
Oxford University Press |
url |
http://hdl.handle.net/2115/83915 https://doi.org/10.1093/gbe/evab195 |
genre |
Ursus arctos |
genre_facet |
Ursus arctos |
op_relation |
http://hdl.handle.net/2115/83915 Genome biology and evolution, 13(9): evab195 http://dx.doi.org/10.1093/gbe/evab195 |
op_doi |
https://doi.org/10.1093/gbe/evab195 |
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Genome Biology and Evolution |
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13 |
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9 |
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1766231432201502720 |