Possible influence of salmon farming on long-term resident behaviour of wild saithe (Pollachius virens L.)
- The culture of Atlantic salmon is one of the most developed aquaculture industries in the world. The production from smolt to market size usually takes place in sea cages in open waters, and these structures tend to attract wild fish, as they do for other farmed species. For salmon farming, saithe...
Published in: | ICES Journal of Marine Science |
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Language: | English |
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Oxford Journals
2015
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Online Access: | http://hdl.handle.net/11250/283121 https://doi.org/10.1093/icesjms/fsu096 |
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ftimr:oai:imr.brage.unit.no:11250/283121 2023-05-15T15:32:41+02:00 Possible influence of salmon farming on long-term resident behaviour of wild saithe (Pollachius virens L.) Otterå, Håkon Magne Skilbrei, Ove 2015-01-19T09:48:53Z application/pdf http://hdl.handle.net/11250/283121 https://doi.org/10.1093/icesjms/fsu096 eng eng Oxford Journals Otterå, H., & Skilbrei, O. T. (2014). Possible influence of salmon farming on long-term resident behaviour of wild saithe (Pollachius virens L.). ICES Journal of Marine Science: Journal du Conseil. doi:10.1093/icesjms/fsu096 urn:issn:1095-9289 http://hdl.handle.net/11250/283121 https://doi.org/10.1093/icesjms/fsu096 cristin:1200613 2484-2493 71 ICES Journal of Marine Science 9 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Aquaculture: 922 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923 Journal article Peer reviewed 2015 ftimr https://doi.org/10.1093/icesjms/fsu096 2021-09-23T20:15:57Z - The culture of Atlantic salmon is one of the most developed aquaculture industries in the world. The production from smolt to market size usually takes place in sea cages in open waters, and these structures tend to attract wild fish, as they do for other farmed species. For salmon farming, saithe (Pollachius virens) is one of the most-frequently observed species around sea cages. An important question is whether the large concentration of salmon farms in some areas might alter the natural behaviour and migration pattern of wild saithe. We tagged 62 wild saithe with acoustic tags and followed their movements for up to 2 years in an area in Southwestern Norway with many salmon farms. Furthermore, nearly 2000 saithe were tagged with external T-bar tags to study migration beyond the study area. The recaptures of the T-bar tagged saithe from offshore areas suggest that the offshore migration routes of saithe are similar to published results from before salmon farming became significant in the area. However, a large proportion of the saithe population appears to remain in the release area and was observed at the salmon farms for much of the time. We conclude that the aquaculture industry is influencing the local saithe distribution. Large-scale population effects are more difficult to prove, but it is possible that the dynamic relationship between the coastal and oceanic phases has been altered. Article in Journal/Newspaper Atlantic salmon Institute for Marine Research: Brage IMR Norway ICES Journal of Marine Science 71 9 2484 2493 |
institution |
Open Polar |
collection |
Institute for Marine Research: Brage IMR |
op_collection_id |
ftimr |
language |
English |
topic |
VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Aquaculture: 922 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923 |
spellingShingle |
VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Aquaculture: 922 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923 Otterå, Håkon Magne Skilbrei, Ove Possible influence of salmon farming on long-term resident behaviour of wild saithe (Pollachius virens L.) |
topic_facet |
VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Aquaculture: 922 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923 |
description |
- The culture of Atlantic salmon is one of the most developed aquaculture industries in the world. The production from smolt to market size usually takes place in sea cages in open waters, and these structures tend to attract wild fish, as they do for other farmed species. For salmon farming, saithe (Pollachius virens) is one of the most-frequently observed species around sea cages. An important question is whether the large concentration of salmon farms in some areas might alter the natural behaviour and migration pattern of wild saithe. We tagged 62 wild saithe with acoustic tags and followed their movements for up to 2 years in an area in Southwestern Norway with many salmon farms. Furthermore, nearly 2000 saithe were tagged with external T-bar tags to study migration beyond the study area. The recaptures of the T-bar tagged saithe from offshore areas suggest that the offshore migration routes of saithe are similar to published results from before salmon farming became significant in the area. However, a large proportion of the saithe population appears to remain in the release area and was observed at the salmon farms for much of the time. We conclude that the aquaculture industry is influencing the local saithe distribution. Large-scale population effects are more difficult to prove, but it is possible that the dynamic relationship between the coastal and oceanic phases has been altered. |
format |
Article in Journal/Newspaper |
author |
Otterå, Håkon Magne Skilbrei, Ove |
author_facet |
Otterå, Håkon Magne Skilbrei, Ove |
author_sort |
Otterå, Håkon Magne |
title |
Possible influence of salmon farming on long-term resident behaviour of wild saithe (Pollachius virens L.) |
title_short |
Possible influence of salmon farming on long-term resident behaviour of wild saithe (Pollachius virens L.) |
title_full |
Possible influence of salmon farming on long-term resident behaviour of wild saithe (Pollachius virens L.) |
title_fullStr |
Possible influence of salmon farming on long-term resident behaviour of wild saithe (Pollachius virens L.) |
title_full_unstemmed |
Possible influence of salmon farming on long-term resident behaviour of wild saithe (Pollachius virens L.) |
title_sort |
possible influence of salmon farming on long-term resident behaviour of wild saithe (pollachius virens l.) |
publisher |
Oxford Journals |
publishDate |
2015 |
url |
http://hdl.handle.net/11250/283121 https://doi.org/10.1093/icesjms/fsu096 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_source |
2484-2493 71 ICES Journal of Marine Science 9 |
op_relation |
Otterå, H., & Skilbrei, O. T. (2014). Possible influence of salmon farming on long-term resident behaviour of wild saithe (Pollachius virens L.). ICES Journal of Marine Science: Journal du Conseil. doi:10.1093/icesjms/fsu096 urn:issn:1095-9289 http://hdl.handle.net/11250/283121 https://doi.org/10.1093/icesjms/fsu096 cristin:1200613 |
op_doi |
https://doi.org/10.1093/icesjms/fsu096 |
container_title |
ICES Journal of Marine Science |
container_volume |
71 |
container_issue |
9 |
container_start_page |
2484 |
op_container_end_page |
2493 |
_version_ |
1766363179263197184 |