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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ftpubmed:oai:pubmedcentral.nih.gov:3728969 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 Perrier, Charles Guyomard, René Bagliniere, Jean-Luc Nikolic, Natacha Evanno, Guillaume 2013-07 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3728969 http://www.ncbi.nlm.nih.gov/pubmed/23919174 https://doi.org/10.1002/ece3.629 en eng Blackwell Publishing Ltd http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3728969 http://www.ncbi.nlm.nih.gov/pubmed/23919174 http://dx.doi.org/10.1002/ece3.629 © 2013 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. http://creativecommons.org/licenses/by/2.5/ Re-use of this article is permitted in accordance with the Creative Commons Deed, Attribution 2.5, which does not permit commercial exploitation. CC-BY Original Research Text 2013 ftpubmed https://doi.org/10.1002/ece3.629 2013-09-05T03:14:21Z 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. Text Atlantic salmon Salmo salar PubMed Central (PMC) Ecology and Evolution 3 7 2334 2349 |
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Original Research Perrier, Charles Guyomard, René Bagliniere, 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 |
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Original Research |
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. |
format |
Text |
author |
Perrier, Charles Guyomard, René Bagliniere, Jean-Luc Nikolic, Natacha Evanno, Guillaume |
author_facet |
Perrier, Charles Guyomard, René Bagliniere, Jean-Luc Nikolic, Natacha Evanno, Guillaume |
author_sort |
Perrier, Charles |
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 |
publisher |
Blackwell Publishing Ltd |
publishDate |
2013 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3728969 http://www.ncbi.nlm.nih.gov/pubmed/23919174 https://doi.org/10.1002/ece3.629 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3728969 http://www.ncbi.nlm.nih.gov/pubmed/23919174 http://dx.doi.org/10.1002/ece3.629 |
op_rights |
© 2013 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. http://creativecommons.org/licenses/by/2.5/ Re-use of this article is permitted in accordance with the Creative Commons Deed, Attribution 2.5, which does not permit commercial exploitation. |
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CC-BY |
op_doi |
https://doi.org/10.1002/ece3.629 |
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Ecology and Evolution |
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3 |
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7 |
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2334 |
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2349 |
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1766360923548680192 |