A temporal perspective on population structure and gene flow in Atlantic salmon (Salmo salar) in Newfoundland, Canada
Studying population structure and gene flow patterns on temporal scales facilitates an evaluation of the consequences of demographic, physical, and environmental changes on the stability and persistence of populations. Here, we examine temporal genetic variation within and among Atlantic salmon ( Sa...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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crcansciencepubl:10.1139/f09-176 2024-09-15T17:55:57+00:00 A temporal perspective on population structure and gene flow in Atlantic salmon (Salmo salar) in Newfoundland, Canada Palstra, Friso P. Ruzzante, Daniel E. Vasemägi, Anti 2010 http://dx.doi.org/10.1139/f09-176 http://www.nrcresearchpress.com/doi/full-xml/10.1139/F09-176 http://www.nrcresearchpress.com/doi/pdf/10.1139/F09-176 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 67, issue 2, page 225-242 ISSN 0706-652X 1205-7533 journal-article 2010 crcansciencepubl https://doi.org/10.1139/f09-176 2024-07-25T04:10:06Z Studying population structure and gene flow patterns on temporal scales facilitates an evaluation of the consequences of demographic, physical, and environmental changes on the stability and persistence of populations. Here, we examine temporal genetic variation within and among Atlantic salmon ( Salmo salar ) rivers in Newfoundland and Labrador, Canada, using samples collected over a period of six decades (1951–2004). Our objective was to evaluate temporal changes in population connectivity associated with the closure of a commercial marine fishery. Despite demographic instability, we find that population structure remained temporally stable over more than 50 years. However, age structure can affect results when not taken into consideration, particularly in populations of large effective size where genetic drift is not strong. Where weak signals of genetic differentiation did not complicate analyses, contemporary migration was often asymmetric, yet low, suggesting patterns of intermittent gene flow. Nevertheless, we find some links between changes in population dynamics and contemporary gene flow. These findings may therefore imply that management decisions impacting the contemporary population dynamics of individual Atlantic salmon rivers can also affect the genetic stability of this species as a whole. Article in Journal/Newspaper Atlantic salmon Newfoundland Salmo salar Canadian Science Publishing Canadian Journal of Fisheries and Aquatic Sciences 67 2 225 242 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
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English |
description |
Studying population structure and gene flow patterns on temporal scales facilitates an evaluation of the consequences of demographic, physical, and environmental changes on the stability and persistence of populations. Here, we examine temporal genetic variation within and among Atlantic salmon ( Salmo salar ) rivers in Newfoundland and Labrador, Canada, using samples collected over a period of six decades (1951–2004). Our objective was to evaluate temporal changes in population connectivity associated with the closure of a commercial marine fishery. Despite demographic instability, we find that population structure remained temporally stable over more than 50 years. However, age structure can affect results when not taken into consideration, particularly in populations of large effective size where genetic drift is not strong. Where weak signals of genetic differentiation did not complicate analyses, contemporary migration was often asymmetric, yet low, suggesting patterns of intermittent gene flow. Nevertheless, we find some links between changes in population dynamics and contemporary gene flow. These findings may therefore imply that management decisions impacting the contemporary population dynamics of individual Atlantic salmon rivers can also affect the genetic stability of this species as a whole. |
author2 |
Vasemägi, Anti |
format |
Article in Journal/Newspaper |
author |
Palstra, Friso P. Ruzzante, Daniel E. |
spellingShingle |
Palstra, Friso P. Ruzzante, Daniel E. A temporal perspective on population structure and gene flow in Atlantic salmon (Salmo salar) in Newfoundland, Canada |
author_facet |
Palstra, Friso P. Ruzzante, Daniel E. |
author_sort |
Palstra, Friso P. |
title |
A temporal perspective on population structure and gene flow in Atlantic salmon (Salmo salar) in Newfoundland, Canada |
title_short |
A temporal perspective on population structure and gene flow in Atlantic salmon (Salmo salar) in Newfoundland, Canada |
title_full |
A temporal perspective on population structure and gene flow in Atlantic salmon (Salmo salar) in Newfoundland, Canada |
title_fullStr |
A temporal perspective on population structure and gene flow in Atlantic salmon (Salmo salar) in Newfoundland, Canada |
title_full_unstemmed |
A temporal perspective on population structure and gene flow in Atlantic salmon (Salmo salar) in Newfoundland, Canada |
title_sort |
temporal perspective on population structure and gene flow in atlantic salmon (salmo salar) in newfoundland, canada |
publisher |
Canadian Science Publishing |
publishDate |
2010 |
url |
http://dx.doi.org/10.1139/f09-176 http://www.nrcresearchpress.com/doi/full-xml/10.1139/F09-176 http://www.nrcresearchpress.com/doi/pdf/10.1139/F09-176 |
genre |
Atlantic salmon Newfoundland Salmo salar |
genre_facet |
Atlantic salmon Newfoundland Salmo salar |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 67, issue 2, page 225-242 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f09-176 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
67 |
container_issue |
2 |
container_start_page |
225 |
op_container_end_page |
242 |
_version_ |
1810432168211513344 |