Genetic and phenotypic changes in an Atlantic salmon population supplemented with non-local individuals: a longitudinal study over 21 years
While introductions and supplementations using non-native and potentially domesticated individuals may have dramatic evolutionary effects on wild populations, few studies documented the evolution of genetic diversity and life-history traits in supplemented populations. Here, we investigated year-to-...
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ftpubmed:oai:pubmedcentral.nih.gov:4344157 2023-05-15T15:31:25+02:00 Genetic and phenotypic changes in an Atlantic salmon population supplemented with non-local individuals: a longitudinal study over 21 years Le Cam, Sabrina Perrier, Charles Besnard, Anne-Laure Bernatchez, Louis Evanno, Guillaume 2015-03-07 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4344157/ http://www.ncbi.nlm.nih.gov/pubmed/25608883 https://doi.org/10.1098/rspb.2014.2765 en eng The Royal Society http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4344157/ http://www.ncbi.nlm.nih.gov/pubmed/25608883 http://dx.doi.org/10.1098/rspb.2014.2765 © 2015 The Author(s) Published by the Royal Society. All rights reserved. Research Articles Text 2015 ftpubmed https://doi.org/10.1098/rspb.2014.2765 2016-03-20T01:01:44Z While introductions and supplementations using non-native and potentially domesticated individuals may have dramatic evolutionary effects on wild populations, few studies documented the evolution of genetic diversity and life-history traits in supplemented populations. Here, we investigated year-to-year changes from 1989 to 2009 in genetic admixture at 15 microsatellite loci and in phenotypic traits in an Atlantic salmon (Salmo salar) population stocked during the first decade of this period with two genetically and phenotypically distinct source populations. We detected a pattern of temporally increasing introgressive hybridization between the stocked population and both source populations. The proportion of fish returning to the river after a single winter at sea (versus several ones) was higher in fish assigned to the main source population than in local individuals. Moreover, during the first decade of the study, both single-sea-winter and multi-sea-winter (MSW) fish assigned to the main source population were smaller than local fish. During the second decade of the study, MSW fish defined as hybrids were lighter and smaller than fish from parental populations, suggesting outbreeding depression. Overall, this study suggests that supplementation with non-local individuals may alter not only the genetic diversity of wild populations but also life-history traits of adaptive significance. Text Atlantic salmon Salmo salar PubMed Central (PMC) Proceedings of the Royal Society B: Biological Sciences 282 1802 20142765 |
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Research Articles |
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Research Articles Le Cam, Sabrina Perrier, Charles Besnard, Anne-Laure Bernatchez, Louis Evanno, Guillaume Genetic and phenotypic changes in an Atlantic salmon population supplemented with non-local individuals: a longitudinal study over 21 years |
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Research Articles |
description |
While introductions and supplementations using non-native and potentially domesticated individuals may have dramatic evolutionary effects on wild populations, few studies documented the evolution of genetic diversity and life-history traits in supplemented populations. Here, we investigated year-to-year changes from 1989 to 2009 in genetic admixture at 15 microsatellite loci and in phenotypic traits in an Atlantic salmon (Salmo salar) population stocked during the first decade of this period with two genetically and phenotypically distinct source populations. We detected a pattern of temporally increasing introgressive hybridization between the stocked population and both source populations. The proportion of fish returning to the river after a single winter at sea (versus several ones) was higher in fish assigned to the main source population than in local individuals. Moreover, during the first decade of the study, both single-sea-winter and multi-sea-winter (MSW) fish assigned to the main source population were smaller than local fish. During the second decade of the study, MSW fish defined as hybrids were lighter and smaller than fish from parental populations, suggesting outbreeding depression. Overall, this study suggests that supplementation with non-local individuals may alter not only the genetic diversity of wild populations but also life-history traits of adaptive significance. |
format |
Text |
author |
Le Cam, Sabrina Perrier, Charles Besnard, Anne-Laure Bernatchez, Louis Evanno, Guillaume |
author_facet |
Le Cam, Sabrina Perrier, Charles Besnard, Anne-Laure Bernatchez, Louis Evanno, Guillaume |
author_sort |
Le Cam, Sabrina |
title |
Genetic and phenotypic changes in an Atlantic salmon population supplemented with non-local individuals: a longitudinal study over 21 years |
title_short |
Genetic and phenotypic changes in an Atlantic salmon population supplemented with non-local individuals: a longitudinal study over 21 years |
title_full |
Genetic and phenotypic changes in an Atlantic salmon population supplemented with non-local individuals: a longitudinal study over 21 years |
title_fullStr |
Genetic and phenotypic changes in an Atlantic salmon population supplemented with non-local individuals: a longitudinal study over 21 years |
title_full_unstemmed |
Genetic and phenotypic changes in an Atlantic salmon population supplemented with non-local individuals: a longitudinal study over 21 years |
title_sort |
genetic and phenotypic changes in an atlantic salmon population supplemented with non-local individuals: a longitudinal study over 21 years |
publisher |
The Royal Society |
publishDate |
2015 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4344157/ http://www.ncbi.nlm.nih.gov/pubmed/25608883 https://doi.org/10.1098/rspb.2014.2765 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4344157/ http://www.ncbi.nlm.nih.gov/pubmed/25608883 http://dx.doi.org/10.1098/rspb.2014.2765 |
op_rights |
© 2015 The Author(s) Published by the Royal Society. All rights reserved. |
op_doi |
https://doi.org/10.1098/rspb.2014.2765 |
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Proceedings of the Royal Society B: Biological Sciences |
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282 |
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1802 |
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20142765 |
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1766361910399205376 |