Aquaculture-driven evolution: distribution of pyrethroid resistance in the salmon louse throughout the North Atlantic in the years 2000–2017
Abstract The parasitic salmon louse, and its documented resistance to chemotherapeutants, represents the most persistent environmental challenge to global salmonid aquaculture. We used a genetic marker associated with pyrethroid resistance to analyse ∼15 000 lice collected from the North Atlantic in...
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Language: | English |
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Oxford University Press (OUP)
2020
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsaa062 http://academic.oup.com/icesjms/article-pdf/77/5/1806/33703723/fsaa062.pdf |
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croxfordunivpr:10.1093/icesjms/fsaa062 2024-05-12T08:01:22+00:00 Aquaculture-driven evolution: distribution of pyrethroid resistance in the salmon louse throughout the North Atlantic in the years 2000–2017 Fjørtoft, Helene Børretzen Nilsen, Frank Besnier, Francois Espedal, Per Gunnar Stene, Anne Tveten, Ann-Kristin Bjørn, Pål Arne Aspehaug, Vidar Teis Glover, Kevin Alan Bradbury, Ian Mattilsynet Norges Forskningsråd Havforskningsinstituttet 2020 http://dx.doi.org/10.1093/icesjms/fsaa062 http://academic.oup.com/icesjms/article-pdf/77/5/1806/33703723/fsaa062.pdf en eng Oxford University Press (OUP) http://creativecommons.org/licenses/by/4.0/ ICES Journal of Marine Science volume 77, issue 5, page 1806-1815 ISSN 1095-9289 Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2020 croxfordunivpr https://doi.org/10.1093/icesjms/fsaa062 2024-04-18T08:16:54Z Abstract The parasitic salmon louse, and its documented resistance to chemotherapeutants, represents the most persistent environmental challenge to global salmonid aquaculture. We used a genetic marker associated with pyrethroid resistance to analyse ∼15 000 lice collected from the North Atlantic in the period 2000–2017. The genotype associated with resistance was not detected in lice collected from throughout the North Atlantic in the year 2000 or 2002. However, by the year 2009 onwards, it was found in lice from fish farms throughout much of the North Atlantic. It was also found in modest frequencies in lice collected from wild Atlantic salmon captured off Greenland. The most recent samples displayed very high frequencies of the genotype associated with resistance, particularly in intensive aquaculture regions of Norway (>90%) and Scotland (>70%). These results closely align with observations from the field. We suggest that pyrethroid resistance first emerged in Europe just before or around the year 2000 and was thereafter dispersed throughout much of the North Atlantic where its increased frequency was driven by extensive pyrethroid use. Although the resistant genotype was not detected in lice from Canada, it is likely to occur in very low frequencies that would quickly increase if pyrethroids were to be used in that region. Article in Journal/Newspaper Atlantic salmon Greenland North Atlantic Oxford University Press Canada Greenland Norway ICES Journal of Marine Science 77 5 1806 1815 |
institution |
Open Polar |
collection |
Oxford University Press |
op_collection_id |
croxfordunivpr |
language |
English |
topic |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography Fjørtoft, Helene Børretzen Nilsen, Frank Besnier, Francois Espedal, Per Gunnar Stene, Anne Tveten, Ann-Kristin Bjørn, Pål Arne Aspehaug, Vidar Teis Glover, Kevin Alan Aquaculture-driven evolution: distribution of pyrethroid resistance in the salmon louse throughout the North Atlantic in the years 2000–2017 |
topic_facet |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract The parasitic salmon louse, and its documented resistance to chemotherapeutants, represents the most persistent environmental challenge to global salmonid aquaculture. We used a genetic marker associated with pyrethroid resistance to analyse ∼15 000 lice collected from the North Atlantic in the period 2000–2017. The genotype associated with resistance was not detected in lice collected from throughout the North Atlantic in the year 2000 or 2002. However, by the year 2009 onwards, it was found in lice from fish farms throughout much of the North Atlantic. It was also found in modest frequencies in lice collected from wild Atlantic salmon captured off Greenland. The most recent samples displayed very high frequencies of the genotype associated with resistance, particularly in intensive aquaculture regions of Norway (>90%) and Scotland (>70%). These results closely align with observations from the field. We suggest that pyrethroid resistance first emerged in Europe just before or around the year 2000 and was thereafter dispersed throughout much of the North Atlantic where its increased frequency was driven by extensive pyrethroid use. Although the resistant genotype was not detected in lice from Canada, it is likely to occur in very low frequencies that would quickly increase if pyrethroids were to be used in that region. |
author2 |
Bradbury, Ian Mattilsynet Norges Forskningsråd Havforskningsinstituttet |
format |
Article in Journal/Newspaper |
author |
Fjørtoft, Helene Børretzen Nilsen, Frank Besnier, Francois Espedal, Per Gunnar Stene, Anne Tveten, Ann-Kristin Bjørn, Pål Arne Aspehaug, Vidar Teis Glover, Kevin Alan |
author_facet |
Fjørtoft, Helene Børretzen Nilsen, Frank Besnier, Francois Espedal, Per Gunnar Stene, Anne Tveten, Ann-Kristin Bjørn, Pål Arne Aspehaug, Vidar Teis Glover, Kevin Alan |
author_sort |
Fjørtoft, Helene Børretzen |
title |
Aquaculture-driven evolution: distribution of pyrethroid resistance in the salmon louse throughout the North Atlantic in the years 2000–2017 |
title_short |
Aquaculture-driven evolution: distribution of pyrethroid resistance in the salmon louse throughout the North Atlantic in the years 2000–2017 |
title_full |
Aquaculture-driven evolution: distribution of pyrethroid resistance in the salmon louse throughout the North Atlantic in the years 2000–2017 |
title_fullStr |
Aquaculture-driven evolution: distribution of pyrethroid resistance in the salmon louse throughout the North Atlantic in the years 2000–2017 |
title_full_unstemmed |
Aquaculture-driven evolution: distribution of pyrethroid resistance in the salmon louse throughout the North Atlantic in the years 2000–2017 |
title_sort |
aquaculture-driven evolution: distribution of pyrethroid resistance in the salmon louse throughout the north atlantic in the years 2000–2017 |
publisher |
Oxford University Press (OUP) |
publishDate |
2020 |
url |
http://dx.doi.org/10.1093/icesjms/fsaa062 http://academic.oup.com/icesjms/article-pdf/77/5/1806/33703723/fsaa062.pdf |
geographic |
Canada Greenland Norway |
geographic_facet |
Canada Greenland Norway |
genre |
Atlantic salmon Greenland North Atlantic |
genre_facet |
Atlantic salmon Greenland North Atlantic |
op_source |
ICES Journal of Marine Science volume 77, issue 5, page 1806-1815 ISSN 1095-9289 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1093/icesjms/fsaa062 |
container_title |
ICES Journal of Marine Science |
container_volume |
77 |
container_issue |
5 |
container_start_page |
1806 |
op_container_end_page |
1815 |
_version_ |
1798843487569838080 |