Possible influence of salmon farming on long-term resident behaviour of wild saithe (Pollachius virens L.)
Abstract 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,...
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Language: | English |
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Oxford University Press (OUP)
2014
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsu096 http://academic.oup.com/icesjms/article-pdf/71/9/2484/29147713/fsu096.pdf |
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croxfordunivpr:10.1093/icesjms/fsu096 2024-10-13T14:06:08+00:00 Possible influence of salmon farming on long-term resident behaviour of wild saithe (Pollachius virens L.) Otterå, Håkon Skilbrei, Ove T. 2014 http://dx.doi.org/10.1093/icesjms/fsu096 http://academic.oup.com/icesjms/article-pdf/71/9/2484/29147713/fsu096.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 71, issue 9, page 2484-2493 ISSN 1054-3139 1095-9289 journal-article 2014 croxfordunivpr https://doi.org/10.1093/icesjms/fsu096 2024-09-17T04:29:51Z Abstract 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 Oxford University Press Norway ICES Journal of Marine Science 71 9 2484 2493 |
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Open Polar |
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Oxford University Press |
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croxfordunivpr |
language |
English |
description |
Abstract 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 Skilbrei, Ove T. |
spellingShingle |
Otterå, Håkon Skilbrei, Ove T. Possible influence of salmon farming on long-term resident behaviour of wild saithe (Pollachius virens L.) |
author_facet |
Otterå, Håkon Skilbrei, Ove T. |
author_sort |
Otterå, Håkon |
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 University Press (OUP) |
publishDate |
2014 |
url |
http://dx.doi.org/10.1093/icesjms/fsu096 http://academic.oup.com/icesjms/article-pdf/71/9/2484/29147713/fsu096.pdf |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_source |
ICES Journal of Marine Science volume 71, issue 9, page 2484-2493 ISSN 1054-3139 1095-9289 |
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_ |
1812812186162036736 |