Simulated Pre-Spawning Catch Release of Wild Atlantic Salmon (Salmo salar) Results in Faster Fungal Spread and Opposing Effects on Female and Male Proxies of Fecundity
Atlantic salmon 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...
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ftunivtoronto:oai:tspace.library.utoronto.ca:1807/108504 2023-05-15T15:31:47+02:00 Simulated Pre-Spawning Catch Release of Wild Atlantic Salmon (Salmo salar) Results in Faster Fungal Spread and Opposing Effects on Female and Male Proxies of Fecundity PAPATHEODOULOU, MAGDALENE Zvorka, Libor Koeck, Barbara Metcalfe, Neil B Killen, Shaun S 2021-06-29 application/pdf application/msword http://hdl.handle.net/1807/108504 http://www.nrcresearchpress.com/doi/abs/10.1139/cjfas-2021-0089 unknown University of Toronto 0706-652X http://hdl.handle.net/1807/108504 http://www.nrcresearchpress.com/doi/abs/10.1139/cjfas-2021-0089 Article Article Post-Print 2021 ftunivtoronto 2021-12-05T18:17:20Z Atlantic salmon 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. The accepted manuscript in pdf format is listed with the files at the bottom of this page. The presentation of the authors' names and (or) special characters in the title of the manuscript may differ slightly between what is listed on this page and what is listed in the pdf file of the accepted manuscript; that in the pdf file of the accepted manuscript is what was submitted by the author. Article in Journal/Newspaper Atlantic salmon Salmo salar University of Toronto: Research Repository T-Space |
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Atlantic salmon 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. The accepted manuscript in pdf format is listed with the files at the bottom of this page. The presentation of the authors' names and (or) special characters in the title of the manuscript may differ slightly between what is listed on this page and what is listed in the pdf file of the accepted manuscript; that in the pdf file of the accepted manuscript is what was submitted by the author. |
format |
Article in Journal/Newspaper |
author |
PAPATHEODOULOU, MAGDALENE Zvorka, Libor Koeck, Barbara Metcalfe, Neil B Killen, Shaun S |
spellingShingle |
PAPATHEODOULOU, MAGDALENE Zvorka, Libor Koeck, Barbara Metcalfe, Neil B Killen, Shaun S Simulated Pre-Spawning Catch 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 Zvorka, Libor Koeck, Barbara Metcalfe, Neil B Killen, Shaun S |
author_sort |
PAPATHEODOULOU, MAGDALENE |
title |
Simulated Pre-Spawning Catch 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 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 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 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 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 release of wild atlantic salmon (salmo salar) results in faster fungal spread and opposing effects on female and male proxies of fecundity |
publisher |
University of Toronto |
publishDate |
2021 |
url |
http://hdl.handle.net/1807/108504 http://www.nrcresearchpress.com/doi/abs/10.1139/cjfas-2021-0089 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_relation |
0706-652X http://hdl.handle.net/1807/108504 http://www.nrcresearchpress.com/doi/abs/10.1139/cjfas-2021-0089 |
_version_ |
1766362297038536704 |