The eastern migratory caribou: the role of genetic introgression in ecotype evolution
Understanding the evolutionary history of contemporary animal groups is essential for conservation and management of endangered species like caribou ( Rangifer tarandus ). In central Canada, the ranges of two caribou subspecies (barren-ground/woodland caribou) and two woodland caribou ecotypes (bore...
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crroyalsociety:10.1098/rsos.150469 2024-09-15T18:01:45+00:00 The eastern migratory caribou: the role of genetic introgression in ecotype evolution Klütsch, Cornelya F. C. Manseau, Micheline Trim, Vicki Polfus, Jean Wilson, Paul J. Parks Canada Natural Sciences and Engineering Research Council of Canada Manitoba Hydro Manitoba Conservation Prince Albert Model Forest Saskatchewan Environment Ontario Ministry of Natural Resources Species at Risk Recovery Fund 2016 http://dx.doi.org/10.1098/rsos.150469 https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.150469 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsos.150469 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Royal Society Open Science volume 3, issue 2, page 150469 ISSN 2054-5703 journal-article 2016 crroyalsociety https://doi.org/10.1098/rsos.150469 2024-09-02T04:21:06Z Understanding the evolutionary history of contemporary animal groups is essential for conservation and management of endangered species like caribou ( Rangifer tarandus ). In central Canada, the ranges of two caribou subspecies (barren-ground/woodland caribou) and two woodland caribou ecotypes (boreal/eastern migratory) overlap. Our objectives were to reconstruct the evolutionary history of the eastern migratory ecotype and to assess the potential role of introgression in ecotype evolution. STRUCTURE analyses identified five higher order groups (i.e. three boreal caribou populations, eastern migratory ecotype and barren-ground). The evolutionary history of the eastern migratory ecotype was best explained by an early genetic introgression from barren-ground into a woodland caribou lineage during the Late Pleistocene and subsequent divergence of the eastern migratory ecotype during the Holocene. These results are consistent with the retreat of the Laurentide ice sheet and the colonization of the Hudson Bay coastal areas subsequent to the establishment of forest tundra vegetation approximately 7000 years ago. This historical reconstruction of the eastern migratory ecotype further supports its current classification as a conservation unit, specifically a Designatable Unit, under Canada’s Species at Risk Act. These findings have implications for other sub-specific contact zones for caribou and other North American species in conservation unit delineation. Article in Journal/Newspaper caribou Hudson Bay Ice Sheet Rangifer tarandus Tundra The Royal Society Royal Society Open Science 3 2 150469 |
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The Royal Society |
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crroyalsociety |
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English |
description |
Understanding the evolutionary history of contemporary animal groups is essential for conservation and management of endangered species like caribou ( Rangifer tarandus ). In central Canada, the ranges of two caribou subspecies (barren-ground/woodland caribou) and two woodland caribou ecotypes (boreal/eastern migratory) overlap. Our objectives were to reconstruct the evolutionary history of the eastern migratory ecotype and to assess the potential role of introgression in ecotype evolution. STRUCTURE analyses identified five higher order groups (i.e. three boreal caribou populations, eastern migratory ecotype and barren-ground). The evolutionary history of the eastern migratory ecotype was best explained by an early genetic introgression from barren-ground into a woodland caribou lineage during the Late Pleistocene and subsequent divergence of the eastern migratory ecotype during the Holocene. These results are consistent with the retreat of the Laurentide ice sheet and the colonization of the Hudson Bay coastal areas subsequent to the establishment of forest tundra vegetation approximately 7000 years ago. This historical reconstruction of the eastern migratory ecotype further supports its current classification as a conservation unit, specifically a Designatable Unit, under Canada’s Species at Risk Act. These findings have implications for other sub-specific contact zones for caribou and other North American species in conservation unit delineation. |
author2 |
Parks Canada Natural Sciences and Engineering Research Council of Canada Manitoba Hydro Manitoba Conservation Prince Albert Model Forest Saskatchewan Environment Ontario Ministry of Natural Resources Species at Risk Recovery Fund |
format |
Article in Journal/Newspaper |
author |
Klütsch, Cornelya F. C. Manseau, Micheline Trim, Vicki Polfus, Jean Wilson, Paul J. |
spellingShingle |
Klütsch, Cornelya F. C. Manseau, Micheline Trim, Vicki Polfus, Jean Wilson, Paul J. The eastern migratory caribou: the role of genetic introgression in ecotype evolution |
author_facet |
Klütsch, Cornelya F. C. Manseau, Micheline Trim, Vicki Polfus, Jean Wilson, Paul J. |
author_sort |
Klütsch, Cornelya F. C. |
title |
The eastern migratory caribou: the role of genetic introgression in ecotype evolution |
title_short |
The eastern migratory caribou: the role of genetic introgression in ecotype evolution |
title_full |
The eastern migratory caribou: the role of genetic introgression in ecotype evolution |
title_fullStr |
The eastern migratory caribou: the role of genetic introgression in ecotype evolution |
title_full_unstemmed |
The eastern migratory caribou: the role of genetic introgression in ecotype evolution |
title_sort |
eastern migratory caribou: the role of genetic introgression in ecotype evolution |
publisher |
The Royal Society |
publishDate |
2016 |
url |
http://dx.doi.org/10.1098/rsos.150469 https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.150469 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsos.150469 |
genre |
caribou Hudson Bay Ice Sheet Rangifer tarandus Tundra |
genre_facet |
caribou Hudson Bay Ice Sheet Rangifer tarandus Tundra |
op_source |
Royal Society Open Science volume 3, issue 2, page 150469 ISSN 2054-5703 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
op_doi |
https://doi.org/10.1098/rsos.150469 |
container_title |
Royal Society Open Science |
container_volume |
3 |
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2 |
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150469 |
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1810438828641484800 |