Simulated pre-spawning catch and release of wild Atlantic salmon ( Salmo salar) results in faster fungal spread and opposing effects on female and male proxies of fecundity
Atlantic salmon (Salmo salar) are increasingly being released after capture by anglers. Yet, there are still unknown effects on the fish being subjected to the process of catch and release. Capture too close to spawning could have adverse effects on fish, and such data are important for setting appr...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Language: | English |
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Canadian Science Publishing
2022
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Online Access: | http://dx.doi.org/10.1139/cjfas-2021-0089 https://cdnsciencepub.com/doi/full-xml/10.1139/cjfas-2021-0089 https://cdnsciencepub.com/doi/pdf/10.1139/cjfas-2021-0089 |
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crcansciencepubl:10.1139/cjfas-2021-0089 2024-05-19T07:37:37+00:00 Simulated pre-spawning catch and release of wild Atlantic salmon ( Salmo salar) results in faster fungal spread and opposing effects on female and male proxies of fecundity Papatheodoulou, Magdalene Závorka, Libor Koeck, Barbara Metcalfe, Neil B. Killen, Shaun S. 2022 http://dx.doi.org/10.1139/cjfas-2021-0089 https://cdnsciencepub.com/doi/full-xml/10.1139/cjfas-2021-0089 https://cdnsciencepub.com/doi/pdf/10.1139/cjfas-2021-0089 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 79, issue 2, page 267-276 ISSN 0706-652X 1205-7533 journal-article 2022 crcansciencepubl https://doi.org/10.1139/cjfas-2021-0089 2024-05-02T06:51:27Z Atlantic salmon (Salmo salar) are increasingly being released after capture by anglers. Yet, there are still unknown effects on the fish being subjected to the process of catch and release. Capture too close to spawning could have adverse effects on fish, and such data are important for setting appropriate closed seasons. This study examines how stressors related to catch and release experienced shortly before spawning affects adult mortality, vulnerability to Saprolegnia spp., and reproductive traits. Adult salmon were collected from the river Blackwater, Scotland, towards the end of their migration and were exposed to one of four protocols comprising exercise and air exposure of different durations. The experimental stressors increased the growth rate of the fungus Saprolegnia spp. over the body of the fish. Moreover, male salmon from the most disturbed group exhibited an increase in the maximum duration of their sperm motility. Lastly, females that experienced exercise and (or) air exposure spawned at the usual time but with fewer eggs. These suggest that there may be benefits from preventing angling close to the time of spawning. Article in Journal/Newspaper Atlantic salmon Salmo salar Canadian Science Publishing Canadian Journal of Fisheries and Aquatic Sciences |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
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English |
description |
Atlantic salmon (Salmo salar) are increasingly being released after capture by anglers. Yet, there are still unknown effects on the fish being subjected to the process of catch and release. Capture too close to spawning could have adverse effects on fish, and such data are important for setting appropriate closed seasons. This study examines how stressors related to catch and release experienced shortly before spawning affects adult mortality, vulnerability to Saprolegnia spp., and reproductive traits. Adult salmon were collected from the river Blackwater, Scotland, towards the end of their migration and were exposed to one of four protocols comprising exercise and air exposure of different durations. The experimental stressors increased the growth rate of the fungus Saprolegnia spp. over the body of the fish. Moreover, male salmon from the most disturbed group exhibited an increase in the maximum duration of their sperm motility. Lastly, females that experienced exercise and (or) air exposure spawned at the usual time but with fewer eggs. These suggest that there may be benefits from preventing angling close to the time of spawning. |
format |
Article in Journal/Newspaper |
author |
Papatheodoulou, Magdalene Závorka, Libor Koeck, Barbara Metcalfe, Neil B. Killen, Shaun S. |
spellingShingle |
Papatheodoulou, Magdalene Závorka, Libor Koeck, Barbara Metcalfe, Neil B. Killen, Shaun S. Simulated pre-spawning catch and release of wild Atlantic salmon ( Salmo salar) results in faster fungal spread and opposing effects on female and male proxies of fecundity |
author_facet |
Papatheodoulou, Magdalene Závorka, Libor Koeck, Barbara Metcalfe, Neil B. Killen, Shaun S. |
author_sort |
Papatheodoulou, Magdalene |
title |
Simulated pre-spawning catch and release of wild Atlantic salmon ( Salmo salar) results in faster fungal spread and opposing effects on female and male proxies of fecundity |
title_short |
Simulated pre-spawning catch and release of wild Atlantic salmon ( Salmo salar) results in faster fungal spread and opposing effects on female and male proxies of fecundity |
title_full |
Simulated pre-spawning catch and release of wild Atlantic salmon ( Salmo salar) results in faster fungal spread and opposing effects on female and male proxies of fecundity |
title_fullStr |
Simulated pre-spawning catch and release of wild Atlantic salmon ( Salmo salar) results in faster fungal spread and opposing effects on female and male proxies of fecundity |
title_full_unstemmed |
Simulated pre-spawning catch and release of wild Atlantic salmon ( Salmo salar) results in faster fungal spread and opposing effects on female and male proxies of fecundity |
title_sort |
simulated pre-spawning catch and release of wild atlantic salmon ( salmo salar) results in faster fungal spread and opposing effects on female and male proxies of fecundity |
publisher |
Canadian Science Publishing |
publishDate |
2022 |
url |
http://dx.doi.org/10.1139/cjfas-2021-0089 https://cdnsciencepub.com/doi/full-xml/10.1139/cjfas-2021-0089 https://cdnsciencepub.com/doi/pdf/10.1139/cjfas-2021-0089 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 79, issue 2, page 267-276 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/cjfas-2021-0089 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
_version_ |
1799476952221876224 |