Spatiotemporal analyses suggest the role of glacial history and the ice‐free corridor in shaping American badger population genetic variation
Abstract Recurring glacial cycles through the Quaternary period drastically altered the size and distribution of natural populations of North American flora and fauna. The “southerly refugia model” has been the longstanding framework for testing the effects of glaciation on contemporary genetic patt...
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crwiley:10.1002/ece3.6541 2024-09-15T18:41:27+00:00 Spatiotemporal analyses suggest the role of glacial history and the ice‐free corridor in shaping American badger population genetic variation Ford, Brett M. Cornellas, Anna Leonard, Jennifer A. Weir, Richard D. Russello, Michael A. Natural Sciences and Engineering Research Council of Canada 2020 http://dx.doi.org/10.1002/ece3.6541 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fece3.6541 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.6541 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.6541 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Ecology and Evolution volume 10, issue 15, page 8345-8357 ISSN 2045-7758 2045-7758 journal-article 2020 crwiley https://doi.org/10.1002/ece3.6541 2024-08-27T04:31:36Z Abstract Recurring glacial cycles through the Quaternary period drastically altered the size and distribution of natural populations of North American flora and fauna. The “southerly refugia model” has been the longstanding framework for testing the effects of glaciation on contemporary genetic patterns; however, insights from ancient DNA have contributed to the reconstruction of more complex histories for some species. The American badger, Taxidea taxus , provides an interesting species for exploring the genetic legacy of glacial history, having been hypothesized to have postglacially emerged from a single, southerly refugium to recolonize northern latitudes. However, previous studies have lacked genetic sampling from areas where distinct glacial refugia have been hypothesized, including the Pacific Northwest and American Far North (Yukon, Alaska). In order to further investigate the phylogeographic history of American badgers, we collected mitochondrial DNA sequence data from ancient subfossil material collected within the historical range (Alaska, Yukon) and combined them with new and previously published data from across the species' contemporary distribution ( n = 1,207). We reconstructed a mostly unresolved phylogenetic tree and star‐like haplotype network indicative of emergence from a largely panmictic glacial refugium and recent population expansion, the latter further punctuated by significantly negative Tajima's D and Fu's Fs values. Although directionality of migration cannot be unequivocally inferred, the moderate to high levels of genetic variation exhibited by American badgers, alongside the low frequency of haplotypes with indels in the Midwest, suggest a potential recolonization into central North America after the hypothesized ice‐free corridor reopened ~13,000 years ago. Overall, the expanded reconstruction of phylogeographic history of American badgers offers a broader understanding of contemporary range‐wide patterns and identifies unique genetic units that can likely be used to inform ... Article in Journal/Newspaper Alaska Yukon Wiley Online Library Ecology and Evolution 10 15 8345 8357 |
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Wiley Online Library |
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English |
description |
Abstract Recurring glacial cycles through the Quaternary period drastically altered the size and distribution of natural populations of North American flora and fauna. The “southerly refugia model” has been the longstanding framework for testing the effects of glaciation on contemporary genetic patterns; however, insights from ancient DNA have contributed to the reconstruction of more complex histories for some species. The American badger, Taxidea taxus , provides an interesting species for exploring the genetic legacy of glacial history, having been hypothesized to have postglacially emerged from a single, southerly refugium to recolonize northern latitudes. However, previous studies have lacked genetic sampling from areas where distinct glacial refugia have been hypothesized, including the Pacific Northwest and American Far North (Yukon, Alaska). In order to further investigate the phylogeographic history of American badgers, we collected mitochondrial DNA sequence data from ancient subfossil material collected within the historical range (Alaska, Yukon) and combined them with new and previously published data from across the species' contemporary distribution ( n = 1,207). We reconstructed a mostly unresolved phylogenetic tree and star‐like haplotype network indicative of emergence from a largely panmictic glacial refugium and recent population expansion, the latter further punctuated by significantly negative Tajima's D and Fu's Fs values. Although directionality of migration cannot be unequivocally inferred, the moderate to high levels of genetic variation exhibited by American badgers, alongside the low frequency of haplotypes with indels in the Midwest, suggest a potential recolonization into central North America after the hypothesized ice‐free corridor reopened ~13,000 years ago. Overall, the expanded reconstruction of phylogeographic history of American badgers offers a broader understanding of contemporary range‐wide patterns and identifies unique genetic units that can likely be used to inform ... |
author2 |
Natural Sciences and Engineering Research Council of Canada |
format |
Article in Journal/Newspaper |
author |
Ford, Brett M. Cornellas, Anna Leonard, Jennifer A. Weir, Richard D. Russello, Michael A. |
spellingShingle |
Ford, Brett M. Cornellas, Anna Leonard, Jennifer A. Weir, Richard D. Russello, Michael A. Spatiotemporal analyses suggest the role of glacial history and the ice‐free corridor in shaping American badger population genetic variation |
author_facet |
Ford, Brett M. Cornellas, Anna Leonard, Jennifer A. Weir, Richard D. Russello, Michael A. |
author_sort |
Ford, Brett M. |
title |
Spatiotemporal analyses suggest the role of glacial history and the ice‐free corridor in shaping American badger population genetic variation |
title_short |
Spatiotemporal analyses suggest the role of glacial history and the ice‐free corridor in shaping American badger population genetic variation |
title_full |
Spatiotemporal analyses suggest the role of glacial history and the ice‐free corridor in shaping American badger population genetic variation |
title_fullStr |
Spatiotemporal analyses suggest the role of glacial history and the ice‐free corridor in shaping American badger population genetic variation |
title_full_unstemmed |
Spatiotemporal analyses suggest the role of glacial history and the ice‐free corridor in shaping American badger population genetic variation |
title_sort |
spatiotemporal analyses suggest the role of glacial history and the ice‐free corridor in shaping american badger population genetic variation |
publisher |
Wiley |
publishDate |
2020 |
url |
http://dx.doi.org/10.1002/ece3.6541 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fece3.6541 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.6541 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.6541 |
genre |
Alaska Yukon |
genre_facet |
Alaska Yukon |
op_source |
Ecology and Evolution volume 10, issue 15, page 8345-8357 ISSN 2045-7758 2045-7758 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/ece3.6541 |
container_title |
Ecology and Evolution |
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10 |
container_issue |
15 |
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8345 |
op_container_end_page |
8357 |
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1810485859715121152 |