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...
Published in: | Science |
---|---|
Main Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
American Association for the Advancement of Science
2012
|
Subjects: | |
Online Access: | https://orca.cardiff.ac.uk/id/eprint/69928/ https://doi.org/10.1126/science.1216424 |
id |
ftunivcardiff:oai:https://orca.cardiff.ac.uk:69928 |
---|---|
record_format |
openpolar |
spelling |
ftunivcardiff:oai:https://orca.cardiff.ac.uk:69928 2023-05-15T15:01:38+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 2012-04 https://orca.cardiff.ac.uk/id/eprint/69928/ https://doi.org/10.1126/science.1216424 unknown American Association for the Advancement of Science Hailer, Frank https://orca.cardiff.ac.uk/view/cardiffauthors/A21394518.html orcid:0000-0002-2340-1726 orcid:0000-0002-2340-1726, Kutschera, Verena E., Hallstroem, Bjoern M., Klassert, Denise, Fain, Steven R., Leonard, Jennifer A., Arnason, Ulfur and Janke, Axel 2012. Nuclear genomic sequences reveal that polar bears are an old and distinct bear lineage. Science 336 (6079) , pp. 344-347. 10.1126/science.1216424 https://doi.org/10.1126/science.1216424 doi:10.1126/science.1216424 Article PeerReviewed 2012 ftunivcardiff https://doi.org/10.1126/science.1216424 2022-10-27T22:41:49Z 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 Cardiff University: ORCA (Online Research @ Cardiff) Arctic Science 336 6079 344 347 |
institution |
Open Polar |
collection |
Cardiff University: ORCA (Online Research @ Cardiff) |
op_collection_id |
ftunivcardiff |
language |
unknown |
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 |
spellingShingle |
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 |
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 |
publishDate |
2012 |
url |
https://orca.cardiff.ac.uk/id/eprint/69928/ https://doi.org/10.1126/science.1216424 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic brown bear |
genre_facet |
Arctic brown bear |
op_relation |
Hailer, Frank https://orca.cardiff.ac.uk/view/cardiffauthors/A21394518.html orcid:0000-0002-2340-1726 orcid:0000-0002-2340-1726, Kutschera, Verena E., Hallstroem, Bjoern M., Klassert, Denise, Fain, Steven R., Leonard, Jennifer A., Arnason, Ulfur and Janke, Axel 2012. Nuclear genomic sequences reveal that polar bears are an old and distinct bear lineage. Science 336 (6079) , pp. 344-347. 10.1126/science.1216424 https://doi.org/10.1126/science.1216424 doi:10.1126/science.1216424 |
op_doi |
https://doi.org/10.1126/science.1216424 |
container_title |
Science |
container_volume |
336 |
container_issue |
6079 |
container_start_page |
344 |
op_container_end_page |
347 |
_version_ |
1766333640275394560 |