Data from: Determinants of hierarchical genetic structure in Atlantic salmon populations: environmental factors vs. anthropogenic influences
Disentangling the effects of natural environmental features and anthropogenic factors on the genetic structure of endangered populations is an important challenge for conservation biology. Here we investigated the combined influences of major environmental features and stocking with non-native fish...
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ftdryad:oai:v1.datadryad.org:10255/dryad.34607 2023-05-15T15:31:02+02:00 Data from: Determinants of hierarchical genetic structure in Atlantic salmon populations: environmental factors vs. anthropogenic influences Perrier, Charles Guyomard, René Baglinière, Jean-Luc Evanno, Guillaume France Europe 2011-08-09T03:34:41Z http://hdl.handle.net/10255/dryad.34607 https://doi.org/10.5061/dryad.72151 unknown doi:10.5061/dryad.72151/1 doi:10.1111/j.1365-294X.2011.05266.x PMID:21917045 doi:10.5061/dryad.72151 Perrier C, Guyomard R, Baglinière J, Evanno G (2011) Determinants of hierarchical genetic structure in Atlantic salmon populations: environmental factors vs. anthropogenic influences. Molecular Ecology 20(20): 4231-4245. http://hdl.handle.net/10255/dryad.34607 Adaptation Conservation Genetics Population Genetics - Empirical Ecological Genetics Fish Fisheries Management Article 2011 ftdryad https://doi.org/10.5061/dryad.72151 https://doi.org/10.5061/dryad.72151/1 https://doi.org/10.1111/j.1365-294X.2011.05266.x 2020-01-01T14:54:10Z Disentangling the effects of natural environmental features and anthropogenic factors on the genetic structure of endangered populations is an important challenge for conservation biology. Here we investigated the combined influences of major environmental features and stocking with non-native fish on the genetic structure and local adaptation of Atlantic salmon (Salmo salar) populations. We used 17 microsatellite loci to genotype 975 individuals originating from 34 French rivers. Bayesian analyses revealed a hierarchical genetic structure into five geographically distinct clusters. Coastal distance, geological substrate and river length were strong predictors of population structure. Gene flow was higher among rivers with similar geologies, suggesting local adaptation to geological substrate. The effect of river length was mainly due to one highly differentiated population that has the farthest spawning grounds off the river mouth (up to 900 km) and the largest fish, suggesting local adaptation to river length. We detected high levels of admixture in stocked populations but also in neighboring ones, implying large scale impacts of stocking through dispersal of non-native-individuals. However, we found relatively few admixed individuals suggesting a lower fitness of stocked fish and/or some reproductive isolation between wild and stocked individuals. When excluding stocked populations, genetic structure increased as did its correlation with environmental factors. This study overall indicates that geological substrate and river length are major environmental factors influencing gene flow and potential local adaptation among Atlantic salmon populations but that stocking with non-native individuals may ultimately disrupt these natural patterns of gene flow among locally adapted populations. Article in Journal/Newspaper Atlantic salmon Salmo salar Dryad Digital Repository (Duke University) |
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collection |
Dryad Digital Repository (Duke University) |
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ftdryad |
language |
unknown |
topic |
Adaptation Conservation Genetics Population Genetics - Empirical Ecological Genetics Fish Fisheries Management |
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Adaptation Conservation Genetics Population Genetics - Empirical Ecological Genetics Fish Fisheries Management Perrier, Charles Guyomard, René Baglinière, Jean-Luc Evanno, Guillaume Data from: Determinants of hierarchical genetic structure in Atlantic salmon populations: environmental factors vs. anthropogenic influences |
topic_facet |
Adaptation Conservation Genetics Population Genetics - Empirical Ecological Genetics Fish Fisheries Management |
description |
Disentangling the effects of natural environmental features and anthropogenic factors on the genetic structure of endangered populations is an important challenge for conservation biology. Here we investigated the combined influences of major environmental features and stocking with non-native fish on the genetic structure and local adaptation of Atlantic salmon (Salmo salar) populations. We used 17 microsatellite loci to genotype 975 individuals originating from 34 French rivers. Bayesian analyses revealed a hierarchical genetic structure into five geographically distinct clusters. Coastal distance, geological substrate and river length were strong predictors of population structure. Gene flow was higher among rivers with similar geologies, suggesting local adaptation to geological substrate. The effect of river length was mainly due to one highly differentiated population that has the farthest spawning grounds off the river mouth (up to 900 km) and the largest fish, suggesting local adaptation to river length. We detected high levels of admixture in stocked populations but also in neighboring ones, implying large scale impacts of stocking through dispersal of non-native-individuals. However, we found relatively few admixed individuals suggesting a lower fitness of stocked fish and/or some reproductive isolation between wild and stocked individuals. When excluding stocked populations, genetic structure increased as did its correlation with environmental factors. This study overall indicates that geological substrate and river length are major environmental factors influencing gene flow and potential local adaptation among Atlantic salmon populations but that stocking with non-native individuals may ultimately disrupt these natural patterns of gene flow among locally adapted populations. |
format |
Article in Journal/Newspaper |
author |
Perrier, Charles Guyomard, René Baglinière, Jean-Luc Evanno, Guillaume |
author_facet |
Perrier, Charles Guyomard, René Baglinière, Jean-Luc Evanno, Guillaume |
author_sort |
Perrier, Charles |
title |
Data from: Determinants of hierarchical genetic structure in Atlantic salmon populations: environmental factors vs. anthropogenic influences |
title_short |
Data from: Determinants of hierarchical genetic structure in Atlantic salmon populations: environmental factors vs. anthropogenic influences |
title_full |
Data from: Determinants of hierarchical genetic structure in Atlantic salmon populations: environmental factors vs. anthropogenic influences |
title_fullStr |
Data from: Determinants of hierarchical genetic structure in Atlantic salmon populations: environmental factors vs. anthropogenic influences |
title_full_unstemmed |
Data from: Determinants of hierarchical genetic structure in Atlantic salmon populations: environmental factors vs. anthropogenic influences |
title_sort |
data from: determinants of hierarchical genetic structure in atlantic salmon populations: environmental factors vs. anthropogenic influences |
publishDate |
2011 |
url |
http://hdl.handle.net/10255/dryad.34607 https://doi.org/10.5061/dryad.72151 |
op_coverage |
France Europe |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_relation |
doi:10.5061/dryad.72151/1 doi:10.1111/j.1365-294X.2011.05266.x PMID:21917045 doi:10.5061/dryad.72151 Perrier C, Guyomard R, Baglinière J, Evanno G (2011) Determinants of hierarchical genetic structure in Atlantic salmon populations: environmental factors vs. anthropogenic influences. Molecular Ecology 20(20): 4231-4245. http://hdl.handle.net/10255/dryad.34607 |
op_doi |
https://doi.org/10.5061/dryad.72151 https://doi.org/10.5061/dryad.72151/1 https://doi.org/10.1111/j.1365-294X.2011.05266.x |
_version_ |
1766361526061498368 |