The interplay between dispersal and gene flow in anadromous Arctic char ( Salvelinus alpinus): implications for potential for local adaptation
Dispersal can influence the process of local adaptation, particularly when the dispersers successfully breed in the non-natal habitat. Anadromous Arctic char (Salvelinus alpinus) display a complex migratory behaviour that makes the distinction between breeding and nonbreeding dispersal especially im...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Language: | English |
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Canadian Science Publishing
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crcansciencepubl:10.1139/cjfas-2013-0138 2024-09-15T17:57:05+00:00 The interplay between dispersal and gene flow in anadromous Arctic char ( Salvelinus alpinus): implications for potential for local adaptation Moore, Jean-Sébastien Harris, Les N. Tallman, Ross F. Taylor, Eric B. Morán, Paloma 2013 http://dx.doi.org/10.1139/cjfas-2013-0138 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2013-0138 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjfas-2013-0138 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 70, issue 9, page 1327-1338 ISSN 0706-652X 1205-7533 journal-article 2013 crcansciencepubl https://doi.org/10.1139/cjfas-2013-0138 2024-08-08T04:13:37Z Dispersal can influence the process of local adaptation, particularly when the dispersers successfully breed in the non-natal habitat. Anadromous Arctic char (Salvelinus alpinus) display a complex migratory behaviour that makes the distinction between breeding and nonbreeding dispersal especially important. This species does not reproduce every year, but individuals must migrate to fresh water to overwinter such that a large proportion of fish running up-river are not in breeding condition and have no potential for gene flow. We used a genetic assignment approach to identify dispersers among populations of char from Baffin Island, Canada. Estimates of dispersal varied between 15.8% and 25.5% depending on the assignment method, suggesting that Arctic char disperse at a higher rate than other salmonids. Nonbreeding individuals were more likely to use non-natal habitats than breeding individuals, thus resulting in estimates of dispersal that overestimate the potential for gene flow among populations. Finally, we parameterized a population genetic model showing that gene flow is probably sufficiently low to allow for local adaptation among populations, given realistic selection coefficients. Our results underscore the importance of understanding patterns of dispersal to appropriately evaluate their potential consequences for local adaptation and management. Article in Journal/Newspaper Baffin Island Baffin Salvelinus alpinus Canadian Science Publishing Canadian Journal of Fisheries and Aquatic Sciences 70 9 1327 1338 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
Dispersal can influence the process of local adaptation, particularly when the dispersers successfully breed in the non-natal habitat. Anadromous Arctic char (Salvelinus alpinus) display a complex migratory behaviour that makes the distinction between breeding and nonbreeding dispersal especially important. This species does not reproduce every year, but individuals must migrate to fresh water to overwinter such that a large proportion of fish running up-river are not in breeding condition and have no potential for gene flow. We used a genetic assignment approach to identify dispersers among populations of char from Baffin Island, Canada. Estimates of dispersal varied between 15.8% and 25.5% depending on the assignment method, suggesting that Arctic char disperse at a higher rate than other salmonids. Nonbreeding individuals were more likely to use non-natal habitats than breeding individuals, thus resulting in estimates of dispersal that overestimate the potential for gene flow among populations. Finally, we parameterized a population genetic model showing that gene flow is probably sufficiently low to allow for local adaptation among populations, given realistic selection coefficients. Our results underscore the importance of understanding patterns of dispersal to appropriately evaluate their potential consequences for local adaptation and management. |
author2 |
Morán, Paloma |
format |
Article in Journal/Newspaper |
author |
Moore, Jean-Sébastien Harris, Les N. Tallman, Ross F. Taylor, Eric B. |
spellingShingle |
Moore, Jean-Sébastien Harris, Les N. Tallman, Ross F. Taylor, Eric B. The interplay between dispersal and gene flow in anadromous Arctic char ( Salvelinus alpinus): implications for potential for local adaptation |
author_facet |
Moore, Jean-Sébastien Harris, Les N. Tallman, Ross F. Taylor, Eric B. |
author_sort |
Moore, Jean-Sébastien |
title |
The interplay between dispersal and gene flow in anadromous Arctic char ( Salvelinus alpinus): implications for potential for local adaptation |
title_short |
The interplay between dispersal and gene flow in anadromous Arctic char ( Salvelinus alpinus): implications for potential for local adaptation |
title_full |
The interplay between dispersal and gene flow in anadromous Arctic char ( Salvelinus alpinus): implications for potential for local adaptation |
title_fullStr |
The interplay between dispersal and gene flow in anadromous Arctic char ( Salvelinus alpinus): implications for potential for local adaptation |
title_full_unstemmed |
The interplay between dispersal and gene flow in anadromous Arctic char ( Salvelinus alpinus): implications for potential for local adaptation |
title_sort |
interplay between dispersal and gene flow in anadromous arctic char ( salvelinus alpinus): implications for potential for local adaptation |
publisher |
Canadian Science Publishing |
publishDate |
2013 |
url |
http://dx.doi.org/10.1139/cjfas-2013-0138 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2013-0138 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjfas-2013-0138 |
genre |
Baffin Island Baffin Salvelinus alpinus |
genre_facet |
Baffin Island Baffin Salvelinus alpinus |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 70, issue 9, page 1327-1338 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/cjfas-2013-0138 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
70 |
container_issue |
9 |
container_start_page |
1327 |
op_container_end_page |
1338 |
_version_ |
1810433269776252928 |