Spatial differences in genetic diversity and northward migration suggest genetic erosion along the boreal caribou southern range limit and continued range retraction
Abstract With increasing human activities and associated landscape changes, distributions of terrestrial mammals become fragmented. These changes in distribution are often associated with reduced population sizes and loss of genetic connectivity and diversity (i.e., genetic erosion) which may furthe...
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ftdoajarticles:oai:doaj.org/article:1dd736145646428db1e39c9818bdc2e7 2023-05-15T18:04:24+02:00 Spatial differences in genetic diversity and northward migration suggest genetic erosion along the boreal caribou southern range limit and continued range retraction Laura M. Thompson Cornelya F. C. Klütsch Micheline Manseau Paul J. Wilson 2019-06-01T00:00:00Z https://doi.org/10.1002/ece3.5269 https://doaj.org/article/1dd736145646428db1e39c9818bdc2e7 EN eng Wiley https://doi.org/10.1002/ece3.5269 https://doaj.org/toc/2045-7758 2045-7758 doi:10.1002/ece3.5269 https://doaj.org/article/1dd736145646428db1e39c9818bdc2e7 Ecology and Evolution, Vol 9, Iss 12, Pp 7030-7046 (2019) boreal caribou boreal forest genetic erosion habitat fragmentation microsatellite DNA range retraction Ecology QH540-549.5 article 2019 ftdoajarticles https://doi.org/10.1002/ece3.5269 2022-12-31T03:51:01Z Abstract With increasing human activities and associated landscape changes, distributions of terrestrial mammals become fragmented. These changes in distribution are often associated with reduced population sizes and loss of genetic connectivity and diversity (i.e., genetic erosion) which may further diminish a species' ability to respond to changing environmental conditions and lead to local population extinctions. We studied threatened boreal caribou (Rangifer tarandus caribou) populations across their distribution in Ontario/Manitoba (Canada) to assess changes in genetic diversity and connectivity in areas of high and low anthropogenic activity. Using data from >1,000 caribou and nine microsatellite loci, we assessed population genetic structure, genetic diversity, and recent migration rates using a combination of network and population genetic analyses. We used Bayesian clustering analyses to identify population genetic structure and explored spatial and temporal variation in those patterns by assembling networks based on RST and FST as historical and contemporary genetic edge distances, respectively. The Bayesian clustering analyses identified broad‐scale patterns of genetic structure and closely aligned with the RST network. The FST network revealed substantial contemporary genetic differentiation, particularly in areas presenting contemporary anthropogenic disturbances and habitat fragmentation. In general, relatively lower genetic diversity and greater genetic differentiation were detected along the southern range limit, differing from areas in the northern parts of the distribution. Moreover, estimation of migration rates suggested a northward movement of animals away from the southern range limit. The patterns of genetic erosion revealed in our study suggest ongoing range retraction of boreal caribou in central Canada. Article in Journal/Newspaper Rangifer tarandus Directory of Open Access Journals: DOAJ Articles Canada Ecology and Evolution 9 12 7030 7046 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
boreal caribou boreal forest genetic erosion habitat fragmentation microsatellite DNA range retraction Ecology QH540-549.5 |
spellingShingle |
boreal caribou boreal forest genetic erosion habitat fragmentation microsatellite DNA range retraction Ecology QH540-549.5 Laura M. Thompson Cornelya F. C. Klütsch Micheline Manseau Paul J. Wilson Spatial differences in genetic diversity and northward migration suggest genetic erosion along the boreal caribou southern range limit and continued range retraction |
topic_facet |
boreal caribou boreal forest genetic erosion habitat fragmentation microsatellite DNA range retraction Ecology QH540-549.5 |
description |
Abstract With increasing human activities and associated landscape changes, distributions of terrestrial mammals become fragmented. These changes in distribution are often associated with reduced population sizes and loss of genetic connectivity and diversity (i.e., genetic erosion) which may further diminish a species' ability to respond to changing environmental conditions and lead to local population extinctions. We studied threatened boreal caribou (Rangifer tarandus caribou) populations across their distribution in Ontario/Manitoba (Canada) to assess changes in genetic diversity and connectivity in areas of high and low anthropogenic activity. Using data from >1,000 caribou and nine microsatellite loci, we assessed population genetic structure, genetic diversity, and recent migration rates using a combination of network and population genetic analyses. We used Bayesian clustering analyses to identify population genetic structure and explored spatial and temporal variation in those patterns by assembling networks based on RST and FST as historical and contemporary genetic edge distances, respectively. The Bayesian clustering analyses identified broad‐scale patterns of genetic structure and closely aligned with the RST network. The FST network revealed substantial contemporary genetic differentiation, particularly in areas presenting contemporary anthropogenic disturbances and habitat fragmentation. In general, relatively lower genetic diversity and greater genetic differentiation were detected along the southern range limit, differing from areas in the northern parts of the distribution. Moreover, estimation of migration rates suggested a northward movement of animals away from the southern range limit. The patterns of genetic erosion revealed in our study suggest ongoing range retraction of boreal caribou in central Canada. |
format |
Article in Journal/Newspaper |
author |
Laura M. Thompson Cornelya F. C. Klütsch Micheline Manseau Paul J. Wilson |
author_facet |
Laura M. Thompson Cornelya F. C. Klütsch Micheline Manseau Paul J. Wilson |
author_sort |
Laura M. Thompson |
title |
Spatial differences in genetic diversity and northward migration suggest genetic erosion along the boreal caribou southern range limit and continued range retraction |
title_short |
Spatial differences in genetic diversity and northward migration suggest genetic erosion along the boreal caribou southern range limit and continued range retraction |
title_full |
Spatial differences in genetic diversity and northward migration suggest genetic erosion along the boreal caribou southern range limit and continued range retraction |
title_fullStr |
Spatial differences in genetic diversity and northward migration suggest genetic erosion along the boreal caribou southern range limit and continued range retraction |
title_full_unstemmed |
Spatial differences in genetic diversity and northward migration suggest genetic erosion along the boreal caribou southern range limit and continued range retraction |
title_sort |
spatial differences in genetic diversity and northward migration suggest genetic erosion along the boreal caribou southern range limit and continued range retraction |
publisher |
Wiley |
publishDate |
2019 |
url |
https://doi.org/10.1002/ece3.5269 https://doaj.org/article/1dd736145646428db1e39c9818bdc2e7 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Rangifer tarandus |
genre_facet |
Rangifer tarandus |
op_source |
Ecology and Evolution, Vol 9, Iss 12, Pp 7030-7046 (2019) |
op_relation |
https://doi.org/10.1002/ece3.5269 https://doaj.org/toc/2045-7758 2045-7758 doi:10.1002/ece3.5269 https://doaj.org/article/1dd736145646428db1e39c9818bdc2e7 |
op_doi |
https://doi.org/10.1002/ece3.5269 |
container_title |
Ecology and Evolution |
container_volume |
9 |
container_issue |
12 |
container_start_page |
7030 |
op_container_end_page |
7046 |
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1766175773559881728 |