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Genomic evidence of...
Genomic evidence of geographically widespread effect of gene flow from polar bears into brown bears.
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Cahill, James A (author)
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Stirling, Ian (author)
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Kistler, Logan (author)
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Salamzade, Rauf (author)
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- Ersmark, Erik, 1977- (author)
- Naturhistoriska riksmuseet,Enheten för bioinformatik och genetik,Stockholms Universitet,Love Daléns grupp
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Fulton, Tara L (author)
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Stiller, Mathias (author)
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Green, Richard E (author)
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Shapiro, Beth (author)
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(creator_code:org_t)
- 2015
- 2015
- English.
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In: Molecular Ecology. - : Wiley. - 0962-1083 .- 1365-294X.
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- Polar bears are an arctic, marine adapted species that is closely related to brown bears. Genome analyses have shown that polar bears are distinct and genetically homogeneous in comparison to brown bears. However, these analyses have also revealed a remarkable episode of polar bear gene flow into the population of brown bears that colonized the Admiralty, Baranof, and Chichagof Islands (ABC Islands) of Alaska. Here, we present an analysis of data from a large panel of polar bear and brown bear genomes that includes brown bears from the ABC Islands, the Alaskan mainland and Europe. Our results provide clear evidence that gene flow between the two species had a geographically wide impact, with polar bear DNA found within the genomes of brown bears living both on the ABC Islands and in the Alaskan mainland. Intriguingly, while brown bear genomes contain up to 8.8% polar bear ancestry, polar bear genomes appear to be devoid of brown bear ancestry, suggesting the presence of a barrier to gene flow in that direction. This article is protected by copyright. All rights reserved.
Subject headings
- NATURVETENSKAP -- Biologi -- Evolutionsbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Evolutionary Biology (hsv//eng)
Keyword
- Livets mångfald
- Diversity of life
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Cahill, James A
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Stirling, Ian
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Kistler, Logan
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Salamzade, Rauf
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Ersmark, Erik, 1 ...
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Fulton, Tara L
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show more...
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Stiller, Mathias
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Green, Richard E
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Shapiro, Beth
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
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and Evolutionary Bio ...
- Articles in the publication
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Molecular Ecolog ...
- By the university
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Swedish Museum of Natural History