Nuclear Genomic Sequences Reveal that Polar Bears Are an Old and Distinct Bear Lineage
Recent studies have shown that the polar bear matriline (mitochondrial DNA) evolved from a brown bear lineage since the late Pleistocene, potentially indicating rapid speciation and adaption to arctic conditions. Here, we present a high-resolution data set from multiple independent loci across the n...
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American Association for the Advancement of Science (AAAS)
2012
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Online Access: | https://lup.lub.lu.se/record/2571564 https://doi.org/10.1126/science.1216424 |
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ftulundlup:oai:lup.lub.lu.se:526c5c2b-5a40-479d-aceb-997abb603310 2023-05-15T15:01:26+02:00 Nuclear Genomic Sequences Reveal that Polar Bears Are an Old and Distinct Bear Lineage Hailer, Frank Kutschera, Verena E. Hallstroem, Bjoern M. Klassert, Denise Fain, Steven R. Leonard, Jennifer A. Arnason, Ulfur Janke, Axel 2012 https://lup.lub.lu.se/record/2571564 https://doi.org/10.1126/science.1216424 eng eng American Association for the Advancement of Science (AAAS) https://lup.lub.lu.se/record/2571564 http://dx.doi.org/10.1126/science.1216424 wos:000302995400045 scopus:84859994581 Science; 336(6079), pp 344-347 (2012) ISSN: 1095-9203 Neurology Surgery contributiontojournal/article info:eu-repo/semantics/article text 2012 ftulundlup https://doi.org/10.1126/science.1216424 2023-02-01T23:35:34Z Recent studies have shown that the polar bear matriline (mitochondrial DNA) evolved from a brown bear lineage since the late Pleistocene, potentially indicating rapid speciation and adaption to arctic conditions. Here, we present a high-resolution data set from multiple independent loci across the nuclear genomes of a broad sample of polar, brown, and black bears. Bayesian coalescent analyses place polar bears outside the brown bear clade and date the divergence much earlier, in the middle Pleistocene, about 600 (338 to 934) thousand years ago. This provides more time for polar bear evolution and confirms previous suggestions that polar bears carry introgressed brown bear mitochondrial DNA due to past hybridization. Our results highlight that multilocus genomic analyses are crucial for an accurate understanding of evolutionary history. Article in Journal/Newspaper Arctic brown bear Lund University Publications (LUP) Arctic Science 336 6079 344 347 |
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Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Neurology Surgery |
spellingShingle |
Neurology Surgery Hailer, Frank Kutschera, Verena E. Hallstroem, Bjoern M. Klassert, Denise Fain, Steven R. Leonard, Jennifer A. Arnason, Ulfur Janke, Axel Nuclear Genomic Sequences Reveal that Polar Bears Are an Old and Distinct Bear Lineage |
topic_facet |
Neurology Surgery |
description |
Recent studies have shown that the polar bear matriline (mitochondrial DNA) evolved from a brown bear lineage since the late Pleistocene, potentially indicating rapid speciation and adaption to arctic conditions. Here, we present a high-resolution data set from multiple independent loci across the nuclear genomes of a broad sample of polar, brown, and black bears. Bayesian coalescent analyses place polar bears outside the brown bear clade and date the divergence much earlier, in the middle Pleistocene, about 600 (338 to 934) thousand years ago. This provides more time for polar bear evolution and confirms previous suggestions that polar bears carry introgressed brown bear mitochondrial DNA due to past hybridization. Our results highlight that multilocus genomic analyses are crucial for an accurate understanding of evolutionary history. |
format |
Article in Journal/Newspaper |
author |
Hailer, Frank Kutschera, Verena E. Hallstroem, Bjoern M. Klassert, Denise Fain, Steven R. Leonard, Jennifer A. Arnason, Ulfur Janke, Axel |
author_facet |
Hailer, Frank Kutschera, Verena E. Hallstroem, Bjoern M. Klassert, Denise Fain, Steven R. Leonard, Jennifer A. Arnason, Ulfur Janke, Axel |
author_sort |
Hailer, Frank |
title |
Nuclear Genomic Sequences Reveal that Polar Bears Are an Old and Distinct Bear Lineage |
title_short |
Nuclear Genomic Sequences Reveal that Polar Bears Are an Old and Distinct Bear Lineage |
title_full |
Nuclear Genomic Sequences Reveal that Polar Bears Are an Old and Distinct Bear Lineage |
title_fullStr |
Nuclear Genomic Sequences Reveal that Polar Bears Are an Old and Distinct Bear Lineage |
title_full_unstemmed |
Nuclear Genomic Sequences Reveal that Polar Bears Are an Old and Distinct Bear Lineage |
title_sort |
nuclear genomic sequences reveal that polar bears are an old and distinct bear lineage |
publisher |
American Association for the Advancement of Science (AAAS) |
publishDate |
2012 |
url |
https://lup.lub.lu.se/record/2571564 https://doi.org/10.1126/science.1216424 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic brown bear |
genre_facet |
Arctic brown bear |
op_source |
Science; 336(6079), pp 344-347 (2012) ISSN: 1095-9203 |
op_relation |
https://lup.lub.lu.se/record/2571564 http://dx.doi.org/10.1126/science.1216424 wos:000302995400045 scopus:84859994581 |
op_doi |
https://doi.org/10.1126/science.1216424 |
container_title |
Science |
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336 |
container_issue |
6079 |
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344 |
op_container_end_page |
347 |
_version_ |
1766333455636889600 |