Evidence of farm-induced parasite infestations on wild juvenile salmon in multiple regions of coastal British Columbia, Canada
Salmon farms are spatially concentrated reservoirs of fish host populations that can disrupt natural salmonid host–parasite dynamics. Sea lice frequently infect farm salmon and parasitize sympatric wild juvenile salmonids, with negative impacts on survival in Europe and Pacific Canada. We examined l...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Canadian Science Publishing
2010
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Online Access: | http://dx.doi.org/10.1139/f10-105 http://www.nrcresearchpress.com/doi/full-xml/10.1139/F10-105 http://www.nrcresearchpress.com/doi/pdf/10.1139/F10-105 |
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crcansciencepubl:10.1139/f10-105 2023-12-17T10:48:11+01:00 Evidence of farm-induced parasite infestations on wild juvenile salmon in multiple regions of coastal British Columbia, Canada Price, M. H.H. Morton, A. Reynolds, J. D. 2010 http://dx.doi.org/10.1139/f10-105 http://www.nrcresearchpress.com/doi/full-xml/10.1139/F10-105 http://www.nrcresearchpress.com/doi/pdf/10.1139/F10-105 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 67, issue 12, page 1925-1932 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2010 crcansciencepubl https://doi.org/10.1139/f10-105 2023-11-19T13:39:11Z Salmon farms are spatially concentrated reservoirs of fish host populations that can disrupt natural salmonid host–parasite dynamics. Sea lice frequently infect farm salmon and parasitize sympatric wild juvenile salmonids, with negative impacts on survival in Europe and Pacific Canada. We examined louse parasitism of wild juvenile chum salmon ( Oncorhynchus keta ) and pink salmon ( Oncorhynchus gorbuscha ) from three salmon farming regions in British Columbia (Finlayson, Broughton Archipelago, and Georgia Strait). We compared sites of low and high exposure to farms and included an area without farms (Bella Bella) to assess baseline infection levels. Louse prevalence and abundance were lowest and most similar to natural baseline levels at low-exposure sites and highest at high-exposure sites in all farm regions. A significantly greater proportion of the lice were Lepeophtheirus salmonis at high-exposure sites. Exposure to salmon farms was the only consistently significant factor to explain the variation in prevalence data, with a secondary role played by salinity. Our results support the hypothesis that salmon farms are a major source of sea lice on juvenile wild salmon in salmon farming regions and underscore the importance of using management techniques that mitigate threats to wild stocks. Article in Journal/Newspaper Oncorhynchus gorbuscha Pink salmon Canadian Science Publishing (via Crossref) Canada Pacific British Columbia ENVELOPE(-125.003,-125.003,54.000,54.000) Keta ENVELOPE(-19.455,-19.455,65.656,65.656) Canadian Journal of Fisheries and Aquatic Sciences 67 12 1925 1932 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Price, M. H.H. Morton, A. Reynolds, J. D. Evidence of farm-induced parasite infestations on wild juvenile salmon in multiple regions of coastal British Columbia, Canada |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Salmon farms are spatially concentrated reservoirs of fish host populations that can disrupt natural salmonid host–parasite dynamics. Sea lice frequently infect farm salmon and parasitize sympatric wild juvenile salmonids, with negative impacts on survival in Europe and Pacific Canada. We examined louse parasitism of wild juvenile chum salmon ( Oncorhynchus keta ) and pink salmon ( Oncorhynchus gorbuscha ) from three salmon farming regions in British Columbia (Finlayson, Broughton Archipelago, and Georgia Strait). We compared sites of low and high exposure to farms and included an area without farms (Bella Bella) to assess baseline infection levels. Louse prevalence and abundance were lowest and most similar to natural baseline levels at low-exposure sites and highest at high-exposure sites in all farm regions. A significantly greater proportion of the lice were Lepeophtheirus salmonis at high-exposure sites. Exposure to salmon farms was the only consistently significant factor to explain the variation in prevalence data, with a secondary role played by salinity. Our results support the hypothesis that salmon farms are a major source of sea lice on juvenile wild salmon in salmon farming regions and underscore the importance of using management techniques that mitigate threats to wild stocks. |
format |
Article in Journal/Newspaper |
author |
Price, M. H.H. Morton, A. Reynolds, J. D. |
author_facet |
Price, M. H.H. Morton, A. Reynolds, J. D. |
author_sort |
Price, M. H.H. |
title |
Evidence of farm-induced parasite infestations on wild juvenile salmon in multiple regions of coastal British Columbia, Canada |
title_short |
Evidence of farm-induced parasite infestations on wild juvenile salmon in multiple regions of coastal British Columbia, Canada |
title_full |
Evidence of farm-induced parasite infestations on wild juvenile salmon in multiple regions of coastal British Columbia, Canada |
title_fullStr |
Evidence of farm-induced parasite infestations on wild juvenile salmon in multiple regions of coastal British Columbia, Canada |
title_full_unstemmed |
Evidence of farm-induced parasite infestations on wild juvenile salmon in multiple regions of coastal British Columbia, Canada |
title_sort |
evidence of farm-induced parasite infestations on wild juvenile salmon in multiple regions of coastal british columbia, canada |
publisher |
Canadian Science Publishing |
publishDate |
2010 |
url |
http://dx.doi.org/10.1139/f10-105 http://www.nrcresearchpress.com/doi/full-xml/10.1139/F10-105 http://www.nrcresearchpress.com/doi/pdf/10.1139/F10-105 |
long_lat |
ENVELOPE(-125.003,-125.003,54.000,54.000) ENVELOPE(-19.455,-19.455,65.656,65.656) |
geographic |
Canada Pacific British Columbia Keta |
geographic_facet |
Canada Pacific British Columbia Keta |
genre |
Oncorhynchus gorbuscha Pink salmon |
genre_facet |
Oncorhynchus gorbuscha Pink salmon |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 67, issue 12, page 1925-1932 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f10-105 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
67 |
container_issue |
12 |
container_start_page |
1925 |
op_container_end_page |
1932 |
_version_ |
1785572286569381888 |