Changes in the genetic structure of Atlantic salmon populations over four decades reveal substantial impacts of stocking and potential resiliency
While the stocking of captive-bred fish has been occurring for decades and has had substantial immediate genetic and evolutionary impacts on wild populations, its long-term consequences have only been weakly investigated. Here, we conducted a spatiotemporal analysis of 1428 Atlantic salmon sampled f...
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ftinraparis:oai:prodinra.inra.fr:209408 2023-05-15T15:30:28+02:00 Changes in the genetic structure of Atlantic salmon populations over four decades reveal substantial impacts of stocking and potential resiliency Guyomard, René Baglinière, Jean-Luc Nikolic, Natacha Evanno, Guillaume Perrier, Charles 2013 application/pdf http://prodinra.inra.fr/ft/217A429E-F52A-4435-8BAC-69D2EEA2F4E9 http://prodinra.inra.fr/record/209408 https://doi.org/10.1002/ece3.629 eng eng http://creativecommons.org/licenses/by-nd-nc/1.0/ CC-BY-ND-NC Ecology and Evolution 7 (3), 2334-2349. (2013) conservation;population genetic;salmo salar;stocking;temporal stability ARTICLE 2013 ftinraparis https://doi.org/10.1002/ece3.629 2015-10-30T07:31:10Z While the stocking of captive-bred fish has been occurring for decades and has had substantial immediate genetic and evolutionary impacts on wild populations, its long-term consequences have only been weakly investigated. Here, we conducted a spatiotemporal analysis of 1428 Atlantic salmon sampled from 1965 to 2006 in 25 populations throughout France to investigate the influence of stocking on the neutral genetic structure in wild Atlantic salmon (Salmo salar) populations. On the basis of the analysis of 11 microsatellite loci, we found that the overall genetic structure among populations dramatically decreased over the period studied. Admixture rates among populations were highly variable, ranging from a nearly undetectable contribution from donor stocks to total replacement of the native gene pool, suggesting extremely variable impacts of stocking. Depending on population, admixture rates either increased, remained stable, or decreased in samples collected between 1998 and 2006 compared to samples from 1965 to 1987, suggesting either rising, long-lasting or short-term impacts of stocking. We discuss the potential mechanisms contributing to this variability, including the reduced fitness of stocked fish and persistence of wild locally adapted individuals. Article in Journal/Newspaper Atlantic salmon Salmo salar Institut National de la Recherche Agronomique: ProdINRA Ecology and Evolution 3 7 2334 2349 |
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Open Polar |
collection |
Institut National de la Recherche Agronomique: ProdINRA |
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ftinraparis |
language |
English |
topic |
conservation;population genetic;salmo salar;stocking;temporal stability |
spellingShingle |
conservation;population genetic;salmo salar;stocking;temporal stability Guyomard, René Baglinière, Jean-Luc Nikolic, Natacha Evanno, Guillaume Changes in the genetic structure of Atlantic salmon populations over four decades reveal substantial impacts of stocking and potential resiliency |
topic_facet |
conservation;population genetic;salmo salar;stocking;temporal stability |
description |
While the stocking of captive-bred fish has been occurring for decades and has had substantial immediate genetic and evolutionary impacts on wild populations, its long-term consequences have only been weakly investigated. Here, we conducted a spatiotemporal analysis of 1428 Atlantic salmon sampled from 1965 to 2006 in 25 populations throughout France to investigate the influence of stocking on the neutral genetic structure in wild Atlantic salmon (Salmo salar) populations. On the basis of the analysis of 11 microsatellite loci, we found that the overall genetic structure among populations dramatically decreased over the period studied. Admixture rates among populations were highly variable, ranging from a nearly undetectable contribution from donor stocks to total replacement of the native gene pool, suggesting extremely variable impacts of stocking. Depending on population, admixture rates either increased, remained stable, or decreased in samples collected between 1998 and 2006 compared to samples from 1965 to 1987, suggesting either rising, long-lasting or short-term impacts of stocking. We discuss the potential mechanisms contributing to this variability, including the reduced fitness of stocked fish and persistence of wild locally adapted individuals. |
author2 |
Perrier, Charles |
format |
Article in Journal/Newspaper |
author |
Guyomard, René Baglinière, Jean-Luc Nikolic, Natacha Evanno, Guillaume |
author_facet |
Guyomard, René Baglinière, Jean-Luc Nikolic, Natacha Evanno, Guillaume |
author_sort |
Guyomard, René |
title |
Changes in the genetic structure of Atlantic salmon populations over four decades reveal substantial impacts of stocking and potential resiliency |
title_short |
Changes in the genetic structure of Atlantic salmon populations over four decades reveal substantial impacts of stocking and potential resiliency |
title_full |
Changes in the genetic structure of Atlantic salmon populations over four decades reveal substantial impacts of stocking and potential resiliency |
title_fullStr |
Changes in the genetic structure of Atlantic salmon populations over four decades reveal substantial impacts of stocking and potential resiliency |
title_full_unstemmed |
Changes in the genetic structure of Atlantic salmon populations over four decades reveal substantial impacts of stocking and potential resiliency |
title_sort |
changes in the genetic structure of atlantic salmon populations over four decades reveal substantial impacts of stocking and potential resiliency |
publishDate |
2013 |
url |
http://prodinra.inra.fr/ft/217A429E-F52A-4435-8BAC-69D2EEA2F4E9 http://prodinra.inra.fr/record/209408 https://doi.org/10.1002/ece3.629 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Ecology and Evolution 7 (3), 2334-2349. (2013) |
op_rights |
http://creativecommons.org/licenses/by-nd-nc/1.0/ |
op_rightsnorm |
CC-BY-ND-NC |
op_doi |
https://doi.org/10.1002/ece3.629 |
container_title |
Ecology and Evolution |
container_volume |
3 |
container_issue |
7 |
container_start_page |
2334 |
op_container_end_page |
2349 |
_version_ |
1766360918752493568 |