Spatiotemporal analyses suggest the role of glacial history and the ice-free corridor in shaping American badger population genetic variation
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; how...
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Online Access: | http://hdl.handle.net/10261/217724 https://doi.org/10.1002/ece3.6541 |
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ftcsic:oai:digital.csic.es:10261/217724 2024-02-11T10:09:28+01:00 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. 2020 http://hdl.handle.net/10261/217724 https://doi.org/10.1002/ece3.6541 en eng Wiley-Blackwell Publisher's version http://dx.doi.org/10.1002/ece3.6541 Sí Ecology and Evolution 1-13 (2020) http://hdl.handle.net/10261/217724 doi:10.1002/ece3.6541 32788984 open artículo http://purl.org/coar/resource_type/c_6501 2020 ftcsic https://doi.org/10.1002/ece3.6541 2024-01-16T10:56:52Z 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 conservation of ... Article in Journal/Newspaper Alaska Yukon Digital.CSIC (Spanish National Research Council) Pacific Yukon Ecology and Evolution 10 15 8345 8357 |
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Open Polar |
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Digital.CSIC (Spanish National Research Council) |
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ftcsic |
language |
English |
description |
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 conservation of ... |
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-Blackwell |
publishDate |
2020 |
url |
http://hdl.handle.net/10261/217724 https://doi.org/10.1002/ece3.6541 |
geographic |
Pacific Yukon |
geographic_facet |
Pacific Yukon |
genre |
Alaska Yukon |
genre_facet |
Alaska Yukon |
op_relation |
Publisher's version http://dx.doi.org/10.1002/ece3.6541 Sí Ecology and Evolution 1-13 (2020) http://hdl.handle.net/10261/217724 doi:10.1002/ece3.6541 32788984 |
op_rights |
open |
op_doi |
https://doi.org/10.1002/ece3.6541 |
container_title |
Ecology and Evolution |
container_volume |
10 |
container_issue |
15 |
container_start_page |
8345 |
op_container_end_page |
8357 |
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1790609379093905408 |