Continent‐wide population genomic structure and phylogeography of North America’s most destructive conifer defoliator, the spruce budworm ( Choristoneura fumiferana)
Abstract The spruce budworm, Choristoneura fumiferana , is presumed to be panmictic across vast regions of North America. We examined the extent of panmixia by genotyping 3,650 single nucleotide polymorphism (SNP) loci in 1975 individuals from 128 collections across the continent. We found three spa...
Published in: | Ecology and Evolution |
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crwiley:10.1002/ece3.5950 2024-09-09T20:14:11+00:00 Continent‐wide population genomic structure and phylogeography of North America’s most destructive conifer defoliator, the spruce budworm ( Choristoneura fumiferana) Lumley, Lisa M. Pouliot, Esther Laroche, Jérôme Boyle, Brian Brunet, Bryan M. T. Levesque, Roger C. Sperling, Felix A. H. Cusson, Michel Natural Sciences and Engineering Research Council of Canada 2020 http://dx.doi.org/10.1002/ece3.5950 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fece3.5950 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.5950 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.5950 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Ecology and Evolution volume 10, issue 2, page 914-927 ISSN 2045-7758 2045-7758 journal-article 2020 crwiley https://doi.org/10.1002/ece3.5950 2024-07-02T04:13:41Z Abstract The spruce budworm, Choristoneura fumiferana , is presumed to be panmictic across vast regions of North America. We examined the extent of panmixia by genotyping 3,650 single nucleotide polymorphism (SNP) loci in 1975 individuals from 128 collections across the continent. We found three spatially structured subpopulations: Western (Alaska, Yukon), Central (southeastern Yukon to the Manitoba–Ontario border), and Eastern (Manitoba–Ontario border to the Atlantic). Additionally, the most diagnostic genetic differentiation between the Central and Eastern subpopulations was chromosomally restricted to a single block of SNPs that may constitute an island of differentiation within the species. Geographic differentiation in the spruce budworm parallels that of its principal larval host, white spruce ( Picea glauca ), providing evidence that spruce budworm and spruce trees survived in the Beringian refugium through the Last Glacial Maximum and that at least two isolated spruce budworm populations diverged with spruce/fir south of the ice sheets. Gene flow in the spruce budworm may also be affected by mountains in western North America, habitat isolation in West Virginia, regional adaptations, factors related to dispersal, and proximity of other species in the spruce budworm species complex. The central and eastern geographic regions contain individuals that assign to Eastern and Central subpopulations, respectively, indicating that these barriers are not complete. Our discovery of previously undetected geographic and genomic structure in the spruce budworm suggests that further population modelling of this ecologically important insect should consider regional differentiation, potentially co‐adapted blocks of genes, and gene flow between subpopulations. Article in Journal/Newspaper Alaska Yukon Wiley Online Library Yukon Ecology and Evolution 10 2 914 927 |
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crwiley |
language |
English |
description |
Abstract The spruce budworm, Choristoneura fumiferana , is presumed to be panmictic across vast regions of North America. We examined the extent of panmixia by genotyping 3,650 single nucleotide polymorphism (SNP) loci in 1975 individuals from 128 collections across the continent. We found three spatially structured subpopulations: Western (Alaska, Yukon), Central (southeastern Yukon to the Manitoba–Ontario border), and Eastern (Manitoba–Ontario border to the Atlantic). Additionally, the most diagnostic genetic differentiation between the Central and Eastern subpopulations was chromosomally restricted to a single block of SNPs that may constitute an island of differentiation within the species. Geographic differentiation in the spruce budworm parallels that of its principal larval host, white spruce ( Picea glauca ), providing evidence that spruce budworm and spruce trees survived in the Beringian refugium through the Last Glacial Maximum and that at least two isolated spruce budworm populations diverged with spruce/fir south of the ice sheets. Gene flow in the spruce budworm may also be affected by mountains in western North America, habitat isolation in West Virginia, regional adaptations, factors related to dispersal, and proximity of other species in the spruce budworm species complex. The central and eastern geographic regions contain individuals that assign to Eastern and Central subpopulations, respectively, indicating that these barriers are not complete. Our discovery of previously undetected geographic and genomic structure in the spruce budworm suggests that further population modelling of this ecologically important insect should consider regional differentiation, potentially co‐adapted blocks of genes, and gene flow between subpopulations. |
author2 |
Natural Sciences and Engineering Research Council of Canada |
format |
Article in Journal/Newspaper |
author |
Lumley, Lisa M. Pouliot, Esther Laroche, Jérôme Boyle, Brian Brunet, Bryan M. T. Levesque, Roger C. Sperling, Felix A. H. Cusson, Michel |
spellingShingle |
Lumley, Lisa M. Pouliot, Esther Laroche, Jérôme Boyle, Brian Brunet, Bryan M. T. Levesque, Roger C. Sperling, Felix A. H. Cusson, Michel Continent‐wide population genomic structure and phylogeography of North America’s most destructive conifer defoliator, the spruce budworm ( Choristoneura fumiferana) |
author_facet |
Lumley, Lisa M. Pouliot, Esther Laroche, Jérôme Boyle, Brian Brunet, Bryan M. T. Levesque, Roger C. Sperling, Felix A. H. Cusson, Michel |
author_sort |
Lumley, Lisa M. |
title |
Continent‐wide population genomic structure and phylogeography of North America’s most destructive conifer defoliator, the spruce budworm ( Choristoneura fumiferana) |
title_short |
Continent‐wide population genomic structure and phylogeography of North America’s most destructive conifer defoliator, the spruce budworm ( Choristoneura fumiferana) |
title_full |
Continent‐wide population genomic structure and phylogeography of North America’s most destructive conifer defoliator, the spruce budworm ( Choristoneura fumiferana) |
title_fullStr |
Continent‐wide population genomic structure and phylogeography of North America’s most destructive conifer defoliator, the spruce budworm ( Choristoneura fumiferana) |
title_full_unstemmed |
Continent‐wide population genomic structure and phylogeography of North America’s most destructive conifer defoliator, the spruce budworm ( Choristoneura fumiferana) |
title_sort |
continent‐wide population genomic structure and phylogeography of north america’s most destructive conifer defoliator, the spruce budworm ( choristoneura fumiferana) |
publisher |
Wiley |
publishDate |
2020 |
url |
http://dx.doi.org/10.1002/ece3.5950 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fece3.5950 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.5950 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.5950 |
geographic |
Yukon |
geographic_facet |
Yukon |
genre |
Alaska Yukon |
genre_facet |
Alaska Yukon |
op_source |
Ecology and Evolution volume 10, issue 2, page 914-927 ISSN 2045-7758 2045-7758 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/ece3.5950 |
container_title |
Ecology and Evolution |
container_volume |
10 |
container_issue |
2 |
container_start_page |
914 |
op_container_end_page |
927 |
_version_ |
1809815886923563008 |