Effects of stocking at the parr stage on the reproductive fitness and genetic diversity of a wild population of Atlantic salmon ( Salmo salar L.)
Abstract Captive‐breeding programs are among the most adopted conservation practices to mitigate the loss of biodiversity, including genetic diversity. However, both genetic and nongenetic changes occurring in captivity can reduce the fitness of supplemented individuals, which complicate rehabilitat...
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Online Access: | http://dx.doi.org/10.1111/eva.13374 https://onlinelibrary.wiley.com/doi/pdf/10.1111/eva.13374 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/eva.13374 |
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crwiley:10.1111/eva.13374 2024-09-15T17:55:55+00:00 Effects of stocking at the parr stage on the reproductive fitness and genetic diversity of a wild population of Atlantic salmon ( Salmo salar L.) Bouchard, Raphaël Wellband, Kyle Lecomte, Laurie Bernatchez, Louis April, Julien 2022 http://dx.doi.org/10.1111/eva.13374 https://onlinelibrary.wiley.com/doi/pdf/10.1111/eva.13374 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/eva.13374 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Evolutionary Applications volume 15, issue 5, page 838-852 ISSN 1752-4571 1752-4571 journal-article 2022 crwiley https://doi.org/10.1111/eva.13374 2024-07-09T04:15:12Z Abstract Captive‐breeding programs are among the most adopted conservation practices to mitigate the loss of biodiversity, including genetic diversity. However, both genetic and nongenetic changes occurring in captivity can reduce the fitness of supplemented individuals, which complicate rehabilitation efforts. In the case of Atlantic salmon, the intensity of changes that occur in captivity and their impact on fitness will vary with the stocking practice adopted. In this study, we test whether salmon stocked at the parr stage have reduced reproductive success compared with their wild conspecifics and whether they contribute to increase genetic diversity in the targeted population. To do so, we use high‐throughput microsatellite sequencing of 38 loci to accurately assign 2381 offspring to a comprehensive set of possible parents from a supplemented Atlantic salmon population in Québec, Canada. Captive‐bred salmon stocked at the parr stage had fewer mates than their wild conspecifics, as well as a reduced relative reproductive success (RSS) compared with their wild counterparts. Nonetheless, in comparison with previous studies, stocking at the parr stage significantly improved RSS compared with salmon stocked as smolts and they displayed a reduction in reproductive success similar to salmon stocked as fry, which spend less time in captivity than parr. Moreover, supplementation of captive‐bred salmon significantly contributed to increasing genetic diversity. These results should contribute to informing resource managers in determining the best stocking practice to enhance Atlantic salmon populations. Article in Journal/Newspaper Atlantic salmon Salmo salar Wiley Online Library Evolutionary Applications 15 5 838 852 |
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Wiley Online Library |
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crwiley |
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English |
description |
Abstract Captive‐breeding programs are among the most adopted conservation practices to mitigate the loss of biodiversity, including genetic diversity. However, both genetic and nongenetic changes occurring in captivity can reduce the fitness of supplemented individuals, which complicate rehabilitation efforts. In the case of Atlantic salmon, the intensity of changes that occur in captivity and their impact on fitness will vary with the stocking practice adopted. In this study, we test whether salmon stocked at the parr stage have reduced reproductive success compared with their wild conspecifics and whether they contribute to increase genetic diversity in the targeted population. To do so, we use high‐throughput microsatellite sequencing of 38 loci to accurately assign 2381 offspring to a comprehensive set of possible parents from a supplemented Atlantic salmon population in Québec, Canada. Captive‐bred salmon stocked at the parr stage had fewer mates than their wild conspecifics, as well as a reduced relative reproductive success (RSS) compared with their wild counterparts. Nonetheless, in comparison with previous studies, stocking at the parr stage significantly improved RSS compared with salmon stocked as smolts and they displayed a reduction in reproductive success similar to salmon stocked as fry, which spend less time in captivity than parr. Moreover, supplementation of captive‐bred salmon significantly contributed to increasing genetic diversity. These results should contribute to informing resource managers in determining the best stocking practice to enhance Atlantic salmon populations. |
format |
Article in Journal/Newspaper |
author |
Bouchard, Raphaël Wellband, Kyle Lecomte, Laurie Bernatchez, Louis April, Julien |
spellingShingle |
Bouchard, Raphaël Wellband, Kyle Lecomte, Laurie Bernatchez, Louis April, Julien Effects of stocking at the parr stage on the reproductive fitness and genetic diversity of a wild population of Atlantic salmon ( Salmo salar L.) |
author_facet |
Bouchard, Raphaël Wellband, Kyle Lecomte, Laurie Bernatchez, Louis April, Julien |
author_sort |
Bouchard, Raphaël |
title |
Effects of stocking at the parr stage on the reproductive fitness and genetic diversity of a wild population of Atlantic salmon ( Salmo salar L.) |
title_short |
Effects of stocking at the parr stage on the reproductive fitness and genetic diversity of a wild population of Atlantic salmon ( Salmo salar L.) |
title_full |
Effects of stocking at the parr stage on the reproductive fitness and genetic diversity of a wild population of Atlantic salmon ( Salmo salar L.) |
title_fullStr |
Effects of stocking at the parr stage on the reproductive fitness and genetic diversity of a wild population of Atlantic salmon ( Salmo salar L.) |
title_full_unstemmed |
Effects of stocking at the parr stage on the reproductive fitness and genetic diversity of a wild population of Atlantic salmon ( Salmo salar L.) |
title_sort |
effects of stocking at the parr stage on the reproductive fitness and genetic diversity of a wild population of atlantic salmon ( salmo salar l.) |
publisher |
Wiley |
publishDate |
2022 |
url |
http://dx.doi.org/10.1111/eva.13374 https://onlinelibrary.wiley.com/doi/pdf/10.1111/eva.13374 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/eva.13374 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Evolutionary Applications volume 15, issue 5, page 838-852 ISSN 1752-4571 1752-4571 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1111/eva.13374 |
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Evolutionary Applications |
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15 |
container_issue |
5 |
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838 |
op_container_end_page |
852 |
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1810432139220484096 |