Fin erosion and injuries in relation to adult recapture rates in cultured smolts of Atlantic salmon and brown trout
The implications of fin erosion and other injuries that are directly or indirectly caused by the hatchery environment have long been debated. Fin condition has been regarded as an indicator of welfare in fish farms, but until now there has been little evidence that eroded fins have negative effects...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Online Access: | http://dx.doi.org/10.1139/cjfas-2012-0247 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2012-0247 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjfas-2012-0247 |
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crcansciencepubl:10.1139/cjfas-2012-0247 2024-09-15T17:56:10+00:00 Fin erosion and injuries in relation to adult recapture rates in cultured smolts of Atlantic salmon and brown trout Petersson, Erik Karlsson, Lars Ragnarsson, Bjarne Bryntesson, Marcus Berglund, Anders Stridsman, Stefan Jonsson, Sara Grant, James 2013 http://dx.doi.org/10.1139/cjfas-2012-0247 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2012-0247 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjfas-2012-0247 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 70, issue 6, page 915-921 ISSN 0706-652X 1205-7533 journal-article 2013 crcansciencepubl https://doi.org/10.1139/cjfas-2012-0247 2024-07-04T04:10:02Z The implications of fin erosion and other injuries that are directly or indirectly caused by the hatchery environment have long been debated. Fin condition has been regarded as an indicator of welfare in fish farms, but until now there has been little evidence that eroded fins have negative effects on survival after stocking in the wild. Based on over 40 years of tagging and recapture data, we show that Atlantic salmon (Salmo salar) with dorsal fin erosion and brown trout (Salmo trutta) with any kind of injuries had lower recapture rates than fish without injuries. In salmon, precocious mature males had a lower probability of being recaptured compared with immature fish. Data from a hatchery monitoring program indicated that the degree of fin erosion on the dorsal fin in salmon and on the caudal fin in trout was correlated with the number of other injuries. We conclude that fin erosion and other injuries may reduce the probability of survival after release. All actions in the hatcheries to reduce fin erosion and other injuries will most likely be positive for the long-term outcome of the stocking programs. Article in Journal/Newspaper Atlantic salmon Salmo salar Canadian Science Publishing Canadian Journal of Fisheries and Aquatic Sciences 70 6 915 921 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
The implications of fin erosion and other injuries that are directly or indirectly caused by the hatchery environment have long been debated. Fin condition has been regarded as an indicator of welfare in fish farms, but until now there has been little evidence that eroded fins have negative effects on survival after stocking in the wild. Based on over 40 years of tagging and recapture data, we show that Atlantic salmon (Salmo salar) with dorsal fin erosion and brown trout (Salmo trutta) with any kind of injuries had lower recapture rates than fish without injuries. In salmon, precocious mature males had a lower probability of being recaptured compared with immature fish. Data from a hatchery monitoring program indicated that the degree of fin erosion on the dorsal fin in salmon and on the caudal fin in trout was correlated with the number of other injuries. We conclude that fin erosion and other injuries may reduce the probability of survival after release. All actions in the hatcheries to reduce fin erosion and other injuries will most likely be positive for the long-term outcome of the stocking programs. |
author2 |
Grant, James |
format |
Article in Journal/Newspaper |
author |
Petersson, Erik Karlsson, Lars Ragnarsson, Bjarne Bryntesson, Marcus Berglund, Anders Stridsman, Stefan Jonsson, Sara |
spellingShingle |
Petersson, Erik Karlsson, Lars Ragnarsson, Bjarne Bryntesson, Marcus Berglund, Anders Stridsman, Stefan Jonsson, Sara Fin erosion and injuries in relation to adult recapture rates in cultured smolts of Atlantic salmon and brown trout |
author_facet |
Petersson, Erik Karlsson, Lars Ragnarsson, Bjarne Bryntesson, Marcus Berglund, Anders Stridsman, Stefan Jonsson, Sara |
author_sort |
Petersson, Erik |
title |
Fin erosion and injuries in relation to adult recapture rates in cultured smolts of Atlantic salmon and brown trout |
title_short |
Fin erosion and injuries in relation to adult recapture rates in cultured smolts of Atlantic salmon and brown trout |
title_full |
Fin erosion and injuries in relation to adult recapture rates in cultured smolts of Atlantic salmon and brown trout |
title_fullStr |
Fin erosion and injuries in relation to adult recapture rates in cultured smolts of Atlantic salmon and brown trout |
title_full_unstemmed |
Fin erosion and injuries in relation to adult recapture rates in cultured smolts of Atlantic salmon and brown trout |
title_sort |
fin erosion and injuries in relation to adult recapture rates in cultured smolts of atlantic salmon and brown trout |
publisher |
Canadian Science Publishing |
publishDate |
2013 |
url |
http://dx.doi.org/10.1139/cjfas-2012-0247 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2012-0247 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjfas-2012-0247 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 70, issue 6, page 915-921 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/cjfas-2012-0247 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
70 |
container_issue |
6 |
container_start_page |
915 |
op_container_end_page |
921 |
_version_ |
1810432369719508992 |