Supplementary material from Captive-bred Atlantic salmon released into the wild have fewer offspring than wild-bred fish and decrease population productivity
The release of captive-bred animals into the wild is commonly practiced to restore or supplement wild populations but comes with a suite of ecological and genetic consequences. Vast numbers of hatchery-reared fish are released annually, ostensibly to restore/enhance wild populations or provide great...
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ftroysocietyfig:oai:figshare.com:article/13072410 2023-05-15T15:30:50+02:00 Supplementary material from Captive-bred Atlantic salmon released into the wild have fewer offspring than wild-bred fish and decrease population productivity Ronan James O'Sullivan Tutku Aykanat Susan E. Johnston Ger Rogan Russell Poole Paulo A. Prodöhl Elvira de Eyto Craig R. Primmer Philip McGinnity Thomas Eric Reed 2020-10-09T11:02:46Z https://doi.org/10.6084/m9.figshare.13072410.v1 https://figshare.com/articles/journal_contribution/Supplementary_material_from_Captive-bred_Atlantic_salmon_released_into_the_wild_have_fewer_offspring_than_wild-bred_fish_and_decrease_population_productivity/13072410 unknown doi:10.6084/m9.figshare.13072410.v1 https://figshare.com/articles/journal_contribution/Supplementary_material_from_Captive-bred_Atlantic_salmon_released_into_the_wild_have_fewer_offspring_than_wild-bred_fish_and_decrease_population_productivity/13072410 CC BY 4.0 CC-BY Genetics Evolutionary Biology Ecology captive breeding stocking Atlantic salmon Salmo salar fitness lifetime reproductive success pedigree Text Journal contribution 2020 ftroysocietyfig https://doi.org/10.6084/m9.figshare.13072410.v1 2022-01-01T19:26:46Z The release of captive-bred animals into the wild is commonly practiced to restore or supplement wild populations but comes with a suite of ecological and genetic consequences. Vast numbers of hatchery-reared fish are released annually, ostensibly to restore/enhance wild populations or provide greater angling returns. While previous studies have shown that captive-bred fish perform poorly in the wild relative to wild-bred conspecifics, few have measured individual lifetime reproductive success (LRS) and how this affects population productivity. Here, we analyse data on Atlantic salmon from an intensely studied catchment into which varying numbers of captive-bred fish have escaped/been released and potentially bred over several decades. Using a molecular pedigree, we demonstrate that, on average, the LRS of captive-bred individuals was only 36% that of wild-bred individuals. A significant LRS difference remained after excluding individuals that left no surviving offspring, some of which might have simply failed to spawn, consistent with transgenerational effects on offspring survival. The annual productivity of the mixed population (wild-bred plus captive-bred) was lower in years where captive-bred fish comprised a greater fraction of potential spawners. These results bolster previous empirical and theoretical findings that intentional stocking, or non-intentional escapees, threaten, rather than enhance, recipient natural populations. Other Non-Article Part of Journal/Newspaper Atlantic salmon Salmo salar The Royal Society: Figshare |
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Open Polar |
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The Royal Society: Figshare |
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ftroysocietyfig |
language |
unknown |
topic |
Genetics Evolutionary Biology Ecology captive breeding stocking Atlantic salmon Salmo salar fitness lifetime reproductive success pedigree |
spellingShingle |
Genetics Evolutionary Biology Ecology captive breeding stocking Atlantic salmon Salmo salar fitness lifetime reproductive success pedigree Ronan James O'Sullivan Tutku Aykanat Susan E. Johnston Ger Rogan Russell Poole Paulo A. Prodöhl Elvira de Eyto Craig R. Primmer Philip McGinnity Thomas Eric Reed Supplementary material from Captive-bred Atlantic salmon released into the wild have fewer offspring than wild-bred fish and decrease population productivity |
topic_facet |
Genetics Evolutionary Biology Ecology captive breeding stocking Atlantic salmon Salmo salar fitness lifetime reproductive success pedigree |
description |
The release of captive-bred animals into the wild is commonly practiced to restore or supplement wild populations but comes with a suite of ecological and genetic consequences. Vast numbers of hatchery-reared fish are released annually, ostensibly to restore/enhance wild populations or provide greater angling returns. While previous studies have shown that captive-bred fish perform poorly in the wild relative to wild-bred conspecifics, few have measured individual lifetime reproductive success (LRS) and how this affects population productivity. Here, we analyse data on Atlantic salmon from an intensely studied catchment into which varying numbers of captive-bred fish have escaped/been released and potentially bred over several decades. Using a molecular pedigree, we demonstrate that, on average, the LRS of captive-bred individuals was only 36% that of wild-bred individuals. A significant LRS difference remained after excluding individuals that left no surviving offspring, some of which might have simply failed to spawn, consistent with transgenerational effects on offspring survival. The annual productivity of the mixed population (wild-bred plus captive-bred) was lower in years where captive-bred fish comprised a greater fraction of potential spawners. These results bolster previous empirical and theoretical findings that intentional stocking, or non-intentional escapees, threaten, rather than enhance, recipient natural populations. |
format |
Other Non-Article Part of Journal/Newspaper |
author |
Ronan James O'Sullivan Tutku Aykanat Susan E. Johnston Ger Rogan Russell Poole Paulo A. Prodöhl Elvira de Eyto Craig R. Primmer Philip McGinnity Thomas Eric Reed |
author_facet |
Ronan James O'Sullivan Tutku Aykanat Susan E. Johnston Ger Rogan Russell Poole Paulo A. Prodöhl Elvira de Eyto Craig R. Primmer Philip McGinnity Thomas Eric Reed |
author_sort |
Ronan James O'Sullivan |
title |
Supplementary material from Captive-bred Atlantic salmon released into the wild have fewer offspring than wild-bred fish and decrease population productivity |
title_short |
Supplementary material from Captive-bred Atlantic salmon released into the wild have fewer offspring than wild-bred fish and decrease population productivity |
title_full |
Supplementary material from Captive-bred Atlantic salmon released into the wild have fewer offspring than wild-bred fish and decrease population productivity |
title_fullStr |
Supplementary material from Captive-bred Atlantic salmon released into the wild have fewer offspring than wild-bred fish and decrease population productivity |
title_full_unstemmed |
Supplementary material from Captive-bred Atlantic salmon released into the wild have fewer offspring than wild-bred fish and decrease population productivity |
title_sort |
supplementary material from captive-bred atlantic salmon released into the wild have fewer offspring than wild-bred fish and decrease population productivity |
publishDate |
2020 |
url |
https://doi.org/10.6084/m9.figshare.13072410.v1 https://figshare.com/articles/journal_contribution/Supplementary_material_from_Captive-bred_Atlantic_salmon_released_into_the_wild_have_fewer_offspring_than_wild-bred_fish_and_decrease_population_productivity/13072410 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_relation |
doi:10.6084/m9.figshare.13072410.v1 https://figshare.com/articles/journal_contribution/Supplementary_material_from_Captive-bred_Atlantic_salmon_released_into_the_wild_have_fewer_offspring_than_wild-bred_fish_and_decrease_population_productivity/13072410 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.13072410.v1 |
_version_ |
1766361303956324352 |