Population dynamics of caribou shaped by glacial cycles before the last glacial maximum
Pleistocene glacial cycles influenced the diversification of high‐latitude wildlife species through recurrent periods of range contraction, isolation, divergence, and expansion from refugia and subsequent admixture of refugial populations. We investigate population size changes and the introgressive...
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ftpubmed:oai:pubmedcentral.nih.gov:9293238 2023-05-15T18:04:21+02:00 Population dynamics of caribou shaped by glacial cycles before the last glacial maximum Taylor, Rebecca S. Manseau, Micheline Klütsch, Cornelya F. C. Polfus, Jean L. Steedman, Audrey Hervieux, Dave Kelly, Allicia Larter, Nicholas C. Gamberg, Mary Schwantje, Helen Wilson, Paul J. 2021-09-17 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9293238/ http://www.ncbi.nlm.nih.gov/pubmed/34482596 https://doi.org/10.1111/mec.16166 en eng John Wiley and Sons Inc. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9293238/ http://www.ncbi.nlm.nih.gov/pubmed/34482596 http://dx.doi.org/10.1111/mec.16166 © 2021 The Authors. Molecular Ecology published by John Wiley & Sons Ltd. https://creativecommons.org/licenses/by-nc/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc/4.0/ (https://creativecommons.org/licenses/by-nc/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes. CC-BY-NC Mol Ecol Inference of Demographic History Text 2021 ftpubmed https://doi.org/10.1111/mec.16166 2022-07-31T02:03:41Z Pleistocene glacial cycles influenced the diversification of high‐latitude wildlife species through recurrent periods of range contraction, isolation, divergence, and expansion from refugia and subsequent admixture of refugial populations. We investigate population size changes and the introgressive history of caribou (Rangifer tarandus) in western Canada using 33 whole genome sequences coupled with larger‐scale mitochondrial data. We found that a major population expansion of caribou occurred starting around 110,000 years ago (kya), the start of the last glacial period. Additionally, we found effective population sizes of some caribou reaching ~700,000 to 1,000,000 individuals, one of the highest recorded historical effective population sizes for any mammal species thus far. Mitochondrial analyses dated introgression events prior to the LGM dating to 20–30 kya and even more ancient at 60 kya, coinciding with colder periods with extensive ice coverage, further demonstrating the importance of glacial cycles and events prior to the LGM in shaping demographic history. Reconstructing the origins and differential introgressive history has implications for predictions on species responses under climate change. Our results have implications for other whole genome analyses using pairwise sequentially Markovian coalescent (PSMC) analyses, as well as highlighting the need to investigate pre‐LGM demographic patterns to fully reconstruct the origin of species diversity, especially for high‐latitude species. Text Rangifer tarandus PubMed Central (PMC) Canada Kya ENVELOPE(8.308,8.308,63.772,63.772) Molecular Ecology 30 23 6121 6143 |
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ftpubmed |
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English |
topic |
Inference of Demographic History |
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Inference of Demographic History Taylor, Rebecca S. Manseau, Micheline Klütsch, Cornelya F. C. Polfus, Jean L. Steedman, Audrey Hervieux, Dave Kelly, Allicia Larter, Nicholas C. Gamberg, Mary Schwantje, Helen Wilson, Paul J. Population dynamics of caribou shaped by glacial cycles before the last glacial maximum |
topic_facet |
Inference of Demographic History |
description |
Pleistocene glacial cycles influenced the diversification of high‐latitude wildlife species through recurrent periods of range contraction, isolation, divergence, and expansion from refugia and subsequent admixture of refugial populations. We investigate population size changes and the introgressive history of caribou (Rangifer tarandus) in western Canada using 33 whole genome sequences coupled with larger‐scale mitochondrial data. We found that a major population expansion of caribou occurred starting around 110,000 years ago (kya), the start of the last glacial period. Additionally, we found effective population sizes of some caribou reaching ~700,000 to 1,000,000 individuals, one of the highest recorded historical effective population sizes for any mammal species thus far. Mitochondrial analyses dated introgression events prior to the LGM dating to 20–30 kya and even more ancient at 60 kya, coinciding with colder periods with extensive ice coverage, further demonstrating the importance of glacial cycles and events prior to the LGM in shaping demographic history. Reconstructing the origins and differential introgressive history has implications for predictions on species responses under climate change. Our results have implications for other whole genome analyses using pairwise sequentially Markovian coalescent (PSMC) analyses, as well as highlighting the need to investigate pre‐LGM demographic patterns to fully reconstruct the origin of species diversity, especially for high‐latitude species. |
format |
Text |
author |
Taylor, Rebecca S. Manseau, Micheline Klütsch, Cornelya F. C. Polfus, Jean L. Steedman, Audrey Hervieux, Dave Kelly, Allicia Larter, Nicholas C. Gamberg, Mary Schwantje, Helen Wilson, Paul J. |
author_facet |
Taylor, Rebecca S. Manseau, Micheline Klütsch, Cornelya F. C. Polfus, Jean L. Steedman, Audrey Hervieux, Dave Kelly, Allicia Larter, Nicholas C. Gamberg, Mary Schwantje, Helen Wilson, Paul J. |
author_sort |
Taylor, Rebecca S. |
title |
Population dynamics of caribou shaped by glacial cycles before the last glacial maximum |
title_short |
Population dynamics of caribou shaped by glacial cycles before the last glacial maximum |
title_full |
Population dynamics of caribou shaped by glacial cycles before the last glacial maximum |
title_fullStr |
Population dynamics of caribou shaped by glacial cycles before the last glacial maximum |
title_full_unstemmed |
Population dynamics of caribou shaped by glacial cycles before the last glacial maximum |
title_sort |
population dynamics of caribou shaped by glacial cycles before the last glacial maximum |
publisher |
John Wiley and Sons Inc. |
publishDate |
2021 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9293238/ http://www.ncbi.nlm.nih.gov/pubmed/34482596 https://doi.org/10.1111/mec.16166 |
long_lat |
ENVELOPE(8.308,8.308,63.772,63.772) |
geographic |
Canada Kya |
geographic_facet |
Canada Kya |
genre |
Rangifer tarandus |
genre_facet |
Rangifer tarandus |
op_source |
Mol Ecol |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9293238/ http://www.ncbi.nlm.nih.gov/pubmed/34482596 http://dx.doi.org/10.1111/mec.16166 |
op_rights |
© 2021 The Authors. Molecular Ecology published by John Wiley & Sons Ltd. https://creativecommons.org/licenses/by-nc/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc/4.0/ (https://creativecommons.org/licenses/by-nc/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes. |
op_rightsnorm |
CC-BY-NC |
op_doi |
https://doi.org/10.1111/mec.16166 |
container_title |
Molecular Ecology |
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30 |
container_issue |
23 |
container_start_page |
6121 |
op_container_end_page |
6143 |
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1766175716024516608 |