Behaviour and survival of wild Atlantic salmon Salmo salar captured and released while surveillance angling for escaped farmed salmon
In many Norwegian rivers, spawning stocks are surveyed for escaped farmed salmon with surveillance fishing by rod and reel after the recreational angling season. However, the benefits of surveillance fishing depend on the ability of wild salmon to return to the spawning stock. To evaluate the impact...
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Online Access: | http://hdl.handle.net/11250/2457473 https://doi.org/10.3354/aei00235 |
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ftninstnf:oai:brage.nina.no:11250/2457473 2024-06-23T07:51:21+00:00 Behaviour and survival of wild Atlantic salmon Salmo salar captured and released while surveillance angling for escaped farmed salmon Lennox, Robert J. Havn, Torgeir Børresen Thorstad, Eva Bonsak Liberg, Egil Cooke, Steven J. Uglem, Ingebrigt Lakselv, Porsanger, Finnmark, Norge, Norway 2017 application/pdf http://hdl.handle.net/11250/2457473 https://doi.org/10.3354/aei00235 eng eng Andre: Natural Sciences and Engineering Research Council of Canada Andre: Fiskeridirektoratet Andre: Miljødirektoratet Aquaculture Environment Interactions. 2017, 9 311-319. urn:issn:1869-215X http://hdl.handle.net/11250/2457473 https://doi.org/10.3354/aei00235 cristin:1491972 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no 311-319 9 Aquaculture Environment Interactions VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 Journal article Peer reviewed 2017 ftninstnf https://doi.org/10.3354/aei00235 2024-06-07T03:57:56Z In many Norwegian rivers, spawning stocks are surveyed for escaped farmed salmon with surveillance fishing by rod and reel after the recreational angling season. However, the benefits of surveillance fishing depend on the ability of wild salmon to return to the spawning stock. To evaluate the impacts of surveillance fishing, we captured, radio-tagged and released wild Atlantic salmon Salmo salar in the River Lakselva, Norway, in a surveillance fishery occurring just prior to the spawning period. Among 39 salmon captured, 36 wild fish were tagged and released, whereas 3 were not released (1 bleeding from the gills, 1 farmed, 1 farmed and bleeding). Survival of fish captured by surveillance fishing was high (95% total survival, 100% catch-and-release survival). Tagged fish were tracked on average 1.2 ± 2.8 (SD) km from the release site at the end of the experiment during the spawning season, not significantly different from the distance moved by salmon radio tagged throughout the summer during a similar interval (15 September to 24 October 2014). Total movement within 3 d of release was inferred to average 1.9 ± 2.1 km, excluding 1 individual that exited the river. Tracking data revealed an immediate behavioural reaction of salmon to surveillance catch-and-release angling, the long-term consequences of which are uncertain. Surveillance fishing may be problematic in rivers with small and vulnerable wild stocks in which a high proportion of the spawning populations is sampled. Surveillance fishing completed with ample time before spawning would be a precautious approach to minimize potential effects during spawning. Telemetry · Catch and release · Species at risk · Biological invasions · Environmental monitoring publishedVersion Article in Journal/Newspaper Atlantic salmon Finnmark Lakselv Porsanger Salmo salar Finnmark Norwegian Institute for Nature Research: Brage NINA Lakselva ENVELOPE(20.165,20.165,69.580,69.580) Norway Porsanger ENVELOPE(24.956,24.956,70.052,70.052) Aquaculture Environment Interactions 9 311 319 |
institution |
Open Polar |
collection |
Norwegian Institute for Nature Research: Brage NINA |
op_collection_id |
ftninstnf |
language |
English |
topic |
VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 |
spellingShingle |
VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 Lennox, Robert J. Havn, Torgeir Børresen Thorstad, Eva Bonsak Liberg, Egil Cooke, Steven J. Uglem, Ingebrigt Behaviour and survival of wild Atlantic salmon Salmo salar captured and released while surveillance angling for escaped farmed salmon |
topic_facet |
VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 |
description |
In many Norwegian rivers, spawning stocks are surveyed for escaped farmed salmon with surveillance fishing by rod and reel after the recreational angling season. However, the benefits of surveillance fishing depend on the ability of wild salmon to return to the spawning stock. To evaluate the impacts of surveillance fishing, we captured, radio-tagged and released wild Atlantic salmon Salmo salar in the River Lakselva, Norway, in a surveillance fishery occurring just prior to the spawning period. Among 39 salmon captured, 36 wild fish were tagged and released, whereas 3 were not released (1 bleeding from the gills, 1 farmed, 1 farmed and bleeding). Survival of fish captured by surveillance fishing was high (95% total survival, 100% catch-and-release survival). Tagged fish were tracked on average 1.2 ± 2.8 (SD) km from the release site at the end of the experiment during the spawning season, not significantly different from the distance moved by salmon radio tagged throughout the summer during a similar interval (15 September to 24 October 2014). Total movement within 3 d of release was inferred to average 1.9 ± 2.1 km, excluding 1 individual that exited the river. Tracking data revealed an immediate behavioural reaction of salmon to surveillance catch-and-release angling, the long-term consequences of which are uncertain. Surveillance fishing may be problematic in rivers with small and vulnerable wild stocks in which a high proportion of the spawning populations is sampled. Surveillance fishing completed with ample time before spawning would be a precautious approach to minimize potential effects during spawning. Telemetry · Catch and release · Species at risk · Biological invasions · Environmental monitoring publishedVersion |
format |
Article in Journal/Newspaper |
author |
Lennox, Robert J. Havn, Torgeir Børresen Thorstad, Eva Bonsak Liberg, Egil Cooke, Steven J. Uglem, Ingebrigt |
author_facet |
Lennox, Robert J. Havn, Torgeir Børresen Thorstad, Eva Bonsak Liberg, Egil Cooke, Steven J. Uglem, Ingebrigt |
author_sort |
Lennox, Robert J. |
title |
Behaviour and survival of wild Atlantic salmon Salmo salar captured and released while surveillance angling for escaped farmed salmon |
title_short |
Behaviour and survival of wild Atlantic salmon Salmo salar captured and released while surveillance angling for escaped farmed salmon |
title_full |
Behaviour and survival of wild Atlantic salmon Salmo salar captured and released while surveillance angling for escaped farmed salmon |
title_fullStr |
Behaviour and survival of wild Atlantic salmon Salmo salar captured and released while surveillance angling for escaped farmed salmon |
title_full_unstemmed |
Behaviour and survival of wild Atlantic salmon Salmo salar captured and released while surveillance angling for escaped farmed salmon |
title_sort |
behaviour and survival of wild atlantic salmon salmo salar captured and released while surveillance angling for escaped farmed salmon |
publishDate |
2017 |
url |
http://hdl.handle.net/11250/2457473 https://doi.org/10.3354/aei00235 |
op_coverage |
Lakselv, Porsanger, Finnmark, Norge, Norway |
long_lat |
ENVELOPE(20.165,20.165,69.580,69.580) ENVELOPE(24.956,24.956,70.052,70.052) |
geographic |
Lakselva Norway Porsanger |
geographic_facet |
Lakselva Norway Porsanger |
genre |
Atlantic salmon Finnmark Lakselv Porsanger Salmo salar Finnmark |
genre_facet |
Atlantic salmon Finnmark Lakselv Porsanger Salmo salar Finnmark |
op_source |
311-319 9 Aquaculture Environment Interactions |
op_relation |
Andre: Natural Sciences and Engineering Research Council of Canada Andre: Fiskeridirektoratet Andre: Miljødirektoratet Aquaculture Environment Interactions. 2017, 9 311-319. urn:issn:1869-215X http://hdl.handle.net/11250/2457473 https://doi.org/10.3354/aei00235 cristin:1491972 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no |
op_doi |
https://doi.org/10.3354/aei00235 |
container_title |
Aquaculture Environment Interactions |
container_volume |
9 |
container_start_page |
311 |
op_container_end_page |
319 |
_version_ |
1802642426103332864 |