Post-escape dispersal of juvenile Atlantic cod Gadus morhua from Norwegian fish farms and their potential for recapture
The escape of fish from sea-based aquaculture facilities is regarded as a potential environmental threat and is one of the biggest challenges the industry has faced in recent years. In addition to preventing escapes by improving farming operations and procedures, effective and operational routines a...
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Online Access: | http://hdl.handle.net/10045/33747 https://doi.org/10.3354/aei00051 |
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ftunivalicante:oai:rua.ua.es:10045/33747 2023-05-15T15:27:05+02:00 Post-escape dispersal of juvenile Atlantic cod Gadus morhua from Norwegian fish farms and their potential for recapture Serra-Llinares, Rosa Maria Nilsen, Rune Uglem, Ingebrigt Arechavala-Lopez, Pablo Bjørn, Pal-Arne Noble, Chris Universidad de Alicante. Departamento de Ciencias del Mar y Biología Aplicada Biología Marina 2013-01-30 http://hdl.handle.net/10045/33747 https://doi.org/10.3354/aei00051 eng eng Inter-Research http://dx.doi.org/10.3354/aei00051 info:eu-repo/grantAgreement/EC/FP7/226885 Serra-Llinares RM, Nilsen R, Uglem I, Arechavala-Lopez P, Bjørn PA, Noble C (2013) Post-escape dispersal of juvenile Atlantic cod Gadus morhua from Norwegian fish farms and their potential for recapture. Aquacult Environ Interact 3:107-116. doi:10.3354/aei00051 1869-215X (Print) 1869-7534 (Online) http://hdl.handle.net/10045/33747 doi:10.3354/aei00051 Copyright © 2013 Inter-Research info:eu-repo/semantics/openAccess Atlantic cod Fish escape Aquaculture Telemetry Recapture Zoología info:eu-repo/semantics/article 2013 ftunivalicante https://doi.org/10.3354/aei00051 2020-06-05T13:08:02Z The escape of fish from sea-based aquaculture facilities is regarded as a potential environmental threat and is one of the biggest challenges the industry has faced in recent years. In addition to preventing escapes by improving farming operations and procedures, effective and operational routines are needed for recapturing fish should an escape occur. This study investigated the post-escape dispersal of juvenile Atlantic cod Gadus morhua L. from commercial sea cages in coastal Norway using acoustic telemetry. It also assessed the efficacy of different techniques (e.g. cod pots, fyke nets, and gill nets) for recapturing escaped fish. Results suggest that escaped juvenile cod can experience a high size-related predation pressure immediately after escape due to high numbers of large fish aggregating around the cages. Consequently, the escapees rapidly disperse from the farms and seek shelter in littoral areas. Once in shallower waters, they stay relatively close (<10 km) to the farm during the first 2 mo following an escape. This suggests a high potential for recapture if the effort is focused on the littoral area and not in the immediate vicinity of the farm. No escapees were caught using live recapture methods, and a low number of recaptures (<5%) were achieved with gill nets deployed in littoral areas. Moreover, high by-catch rates and a subsequent high workload suggest this method may be inappropriate for the recapture of escapees. This research was funded by the European Union’s 7th Research Framework Prevent Escape project (no. 226885). Article in Journal/Newspaper atlantic cod Gadus morhua RUA - Repositorio Institucional de la Universidad de Alicante Norway Aquaculture Environment Interactions 3 2 107 116 |
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Open Polar |
collection |
RUA - Repositorio Institucional de la Universidad de Alicante |
op_collection_id |
ftunivalicante |
language |
English |
topic |
Atlantic cod Fish escape Aquaculture Telemetry Recapture Zoología |
spellingShingle |
Atlantic cod Fish escape Aquaculture Telemetry Recapture Zoología Serra-Llinares, Rosa Maria Nilsen, Rune Uglem, Ingebrigt Arechavala-Lopez, Pablo Bjørn, Pal-Arne Noble, Chris Post-escape dispersal of juvenile Atlantic cod Gadus morhua from Norwegian fish farms and their potential for recapture |
topic_facet |
Atlantic cod Fish escape Aquaculture Telemetry Recapture Zoología |
description |
The escape of fish from sea-based aquaculture facilities is regarded as a potential environmental threat and is one of the biggest challenges the industry has faced in recent years. In addition to preventing escapes by improving farming operations and procedures, effective and operational routines are needed for recapturing fish should an escape occur. This study investigated the post-escape dispersal of juvenile Atlantic cod Gadus morhua L. from commercial sea cages in coastal Norway using acoustic telemetry. It also assessed the efficacy of different techniques (e.g. cod pots, fyke nets, and gill nets) for recapturing escaped fish. Results suggest that escaped juvenile cod can experience a high size-related predation pressure immediately after escape due to high numbers of large fish aggregating around the cages. Consequently, the escapees rapidly disperse from the farms and seek shelter in littoral areas. Once in shallower waters, they stay relatively close (<10 km) to the farm during the first 2 mo following an escape. This suggests a high potential for recapture if the effort is focused on the littoral area and not in the immediate vicinity of the farm. No escapees were caught using live recapture methods, and a low number of recaptures (<5%) were achieved with gill nets deployed in littoral areas. Moreover, high by-catch rates and a subsequent high workload suggest this method may be inappropriate for the recapture of escapees. This research was funded by the European Union’s 7th Research Framework Prevent Escape project (no. 226885). |
author2 |
Universidad de Alicante. Departamento de Ciencias del Mar y Biología Aplicada Biología Marina |
format |
Article in Journal/Newspaper |
author |
Serra-Llinares, Rosa Maria Nilsen, Rune Uglem, Ingebrigt Arechavala-Lopez, Pablo Bjørn, Pal-Arne Noble, Chris |
author_facet |
Serra-Llinares, Rosa Maria Nilsen, Rune Uglem, Ingebrigt Arechavala-Lopez, Pablo Bjørn, Pal-Arne Noble, Chris |
author_sort |
Serra-Llinares, Rosa Maria |
title |
Post-escape dispersal of juvenile Atlantic cod Gadus morhua from Norwegian fish farms and their potential for recapture |
title_short |
Post-escape dispersal of juvenile Atlantic cod Gadus morhua from Norwegian fish farms and their potential for recapture |
title_full |
Post-escape dispersal of juvenile Atlantic cod Gadus morhua from Norwegian fish farms and their potential for recapture |
title_fullStr |
Post-escape dispersal of juvenile Atlantic cod Gadus morhua from Norwegian fish farms and their potential for recapture |
title_full_unstemmed |
Post-escape dispersal of juvenile Atlantic cod Gadus morhua from Norwegian fish farms and their potential for recapture |
title_sort |
post-escape dispersal of juvenile atlantic cod gadus morhua from norwegian fish farms and their potential for recapture |
publisher |
Inter-Research |
publishDate |
2013 |
url |
http://hdl.handle.net/10045/33747 https://doi.org/10.3354/aei00051 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_relation |
http://dx.doi.org/10.3354/aei00051 info:eu-repo/grantAgreement/EC/FP7/226885 Serra-Llinares RM, Nilsen R, Uglem I, Arechavala-Lopez P, Bjørn PA, Noble C (2013) Post-escape dispersal of juvenile Atlantic cod Gadus morhua from Norwegian fish farms and their potential for recapture. Aquacult Environ Interact 3:107-116. doi:10.3354/aei00051 1869-215X (Print) 1869-7534 (Online) http://hdl.handle.net/10045/33747 doi:10.3354/aei00051 |
op_rights |
Copyright © 2013 Inter-Research info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3354/aei00051 |
container_title |
Aquaculture Environment Interactions |
container_volume |
3 |
container_issue |
2 |
container_start_page |
107 |
op_container_end_page |
116 |
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1766357540203921408 |