Influence of gear switching on recapture of Atlantic salmon (Salmo salar) in catch-and- release fisheries
Anglers that release Atlantic salmon (Salmo salar) in recreational fisheries do so with the intention that the fish will survive and contribute to succeeding generations. In some instances, salmon that are released may be recaptured, but mechanisms associated with recapture are unclear. To test whet...
Published in: | Ecology of Freshwater Fish |
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Online Access: | http://hdl.handle.net/11250/2480611 https://doi.org/10.1111/eff.12223 |
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ftninstnf:oai:brage.nina.no:11250/2480611 2023-05-15T15:30:56+02:00 Influence of gear switching on recapture of Atlantic salmon (Salmo salar) in catch-and- release fisheries Lennox, Robert J. Diserud, Ola Håvard Cooke, Steven J. Thorstad, Eva Bonsak Whoriskey, Frederick G. Solem, Øyvind Havn, Torgeir Børresen Uglem, Ingebrigt 2016 application/octet-stream http://hdl.handle.net/11250/2480611 https://doi.org/10.1111/eff.12223 eng eng Norges forskningsråd: 216416 Ecology of Freshwater Fish. 2016, 25 (3), 422-428. urn:issn:0906-6691 http://hdl.handle.net/11250/2480611 https://doi.org/10.1111/eff.12223 cristin:1301611 422-428 25 Ecology of Freshwater Fish 3 Recreational fisheries Fritidsfiske Fish behaviour Fiskeadferd Fiskeriforvaltning Fisheries Management Journal article Peer reviewed 2016 ftninstnf https://doi.org/10.1111/eff.12223 2021-12-23T07:17:03Z Anglers that release Atlantic salmon (Salmo salar) in recreational fisheries do so with the intention that the fish will survive and contribute to succeeding generations. In some instances, salmon that are released may be recaptured, but mechanisms associated with recapture are unclear. To test whether gear avoidance influences recapture rates, we analysed data from tagging programmes in major Norwegian Atlantic salmon fishing rivers to determine how frequently salmon were recaptu red by different gear than that by which they were initially captured (i.e. gear switch). Among 339 salmon captured, externally tagged and released in 2012 and 2013, 46 (14%) were recaptured; 70% of these recaptured salmon exhibited gear switch. To test whether this gear switch percentage could be expected in the absence of gear avoidance, a simulation was conducted, which accounted for variation in catch probability among rivers and across time with different gear types based on comprehensive catch data. Each simulation step provided a simulated rate of gear switch under the null hypothesis of no gear avoidance. A distribution was generated, which described the probability that we would observe 70% gear switch. The simulated results indicated that this rate of gear switch was highly unlikely (P = 0.003) if recapture gear is assumed to be independent of initial capture gear, suggesting that salmon avoided familiar gear types. Changes to behaviour after release, including learned hook avoidance, may explain our observation of gear avoidance by recaptured salmon. fisheries management; recreational fisheries; fish behaviour acceptedVersion Article in Journal/Newspaper Atlantic salmon Salmo salar Norwegian Institute for Nature Research: Brage NINA Ecology of Freshwater Fish 25 3 422 428 |
institution |
Open Polar |
collection |
Norwegian Institute for Nature Research: Brage NINA |
op_collection_id |
ftninstnf |
language |
English |
topic |
Recreational fisheries Fritidsfiske Fish behaviour Fiskeadferd Fiskeriforvaltning Fisheries Management |
spellingShingle |
Recreational fisheries Fritidsfiske Fish behaviour Fiskeadferd Fiskeriforvaltning Fisheries Management Lennox, Robert J. Diserud, Ola Håvard Cooke, Steven J. Thorstad, Eva Bonsak Whoriskey, Frederick G. Solem, Øyvind Havn, Torgeir Børresen Uglem, Ingebrigt Influence of gear switching on recapture of Atlantic salmon (Salmo salar) in catch-and- release fisheries |
topic_facet |
Recreational fisheries Fritidsfiske Fish behaviour Fiskeadferd Fiskeriforvaltning Fisheries Management |
description |
Anglers that release Atlantic salmon (Salmo salar) in recreational fisheries do so with the intention that the fish will survive and contribute to succeeding generations. In some instances, salmon that are released may be recaptured, but mechanisms associated with recapture are unclear. To test whether gear avoidance influences recapture rates, we analysed data from tagging programmes in major Norwegian Atlantic salmon fishing rivers to determine how frequently salmon were recaptu red by different gear than that by which they were initially captured (i.e. gear switch). Among 339 salmon captured, externally tagged and released in 2012 and 2013, 46 (14%) were recaptured; 70% of these recaptured salmon exhibited gear switch. To test whether this gear switch percentage could be expected in the absence of gear avoidance, a simulation was conducted, which accounted for variation in catch probability among rivers and across time with different gear types based on comprehensive catch data. Each simulation step provided a simulated rate of gear switch under the null hypothesis of no gear avoidance. A distribution was generated, which described the probability that we would observe 70% gear switch. The simulated results indicated that this rate of gear switch was highly unlikely (P = 0.003) if recapture gear is assumed to be independent of initial capture gear, suggesting that salmon avoided familiar gear types. Changes to behaviour after release, including learned hook avoidance, may explain our observation of gear avoidance by recaptured salmon. fisheries management; recreational fisheries; fish behaviour acceptedVersion |
format |
Article in Journal/Newspaper |
author |
Lennox, Robert J. Diserud, Ola Håvard Cooke, Steven J. Thorstad, Eva Bonsak Whoriskey, Frederick G. Solem, Øyvind Havn, Torgeir Børresen Uglem, Ingebrigt |
author_facet |
Lennox, Robert J. Diserud, Ola Håvard Cooke, Steven J. Thorstad, Eva Bonsak Whoriskey, Frederick G. Solem, Øyvind Havn, Torgeir Børresen Uglem, Ingebrigt |
author_sort |
Lennox, Robert J. |
title |
Influence of gear switching on recapture of Atlantic salmon (Salmo salar) in catch-and- release fisheries |
title_short |
Influence of gear switching on recapture of Atlantic salmon (Salmo salar) in catch-and- release fisheries |
title_full |
Influence of gear switching on recapture of Atlantic salmon (Salmo salar) in catch-and- release fisheries |
title_fullStr |
Influence of gear switching on recapture of Atlantic salmon (Salmo salar) in catch-and- release fisheries |
title_full_unstemmed |
Influence of gear switching on recapture of Atlantic salmon (Salmo salar) in catch-and- release fisheries |
title_sort |
influence of gear switching on recapture of atlantic salmon (salmo salar) in catch-and- release fisheries |
publishDate |
2016 |
url |
http://hdl.handle.net/11250/2480611 https://doi.org/10.1111/eff.12223 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
422-428 25 Ecology of Freshwater Fish 3 |
op_relation |
Norges forskningsråd: 216416 Ecology of Freshwater Fish. 2016, 25 (3), 422-428. urn:issn:0906-6691 http://hdl.handle.net/11250/2480611 https://doi.org/10.1111/eff.12223 cristin:1301611 |
op_doi |
https://doi.org/10.1111/eff.12223 |
container_title |
Ecology of Freshwater Fish |
container_volume |
25 |
container_issue |
3 |
container_start_page |
422 |
op_container_end_page |
428 |
_version_ |
1766361417791832064 |