Tapeworm (Eubothrium sp.) infestation in sea caged Atlantic salmon decreased by lice barrier snorkels during a commercial-scale study
Reports of infestation by marine parasitic tapeworms (Eubothrium sp.) and an associated growth reduction in Norwegian farmed salmon are on the rise. With few acceptable treatment options available, due to drug resistance evolution in tapeworms or negative drug impacts on fish, alternative controls a...
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Online Access: | https://hdl.handle.net/11250/2765719 https://doi.org/10.1016/j.aquaculture.2021.736774 |
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ftimr:oai:imr.brage.unit.no:11250/2765719 2023-05-15T15:32:27+02:00 Tapeworm (Eubothrium sp.) infestation in sea caged Atlantic salmon decreased by lice barrier snorkels during a commercial-scale study Geitung, Lena Wright, Daniel William Stien, Lars Helge Oppedal, Frode Karlsbakk, Egil Erlingsson 2021 application/pdf https://hdl.handle.net/11250/2765719 https://doi.org/10.1016/j.aquaculture.2021.736774 eng eng Aquaculture. 2021, 541 1-7. urn:issn:0044-8486 https://hdl.handle.net/11250/2765719 https://doi.org/10.1016/j.aquaculture.2021.736774 cristin:1921958 1-7 541 Aquaculture Peer reviewed Journal article 2021 ftimr https://doi.org/10.1016/j.aquaculture.2021.736774 2021-09-23T20:14:17Z Reports of infestation by marine parasitic tapeworms (Eubothrium sp.) and an associated growth reduction in Norwegian farmed salmon are on the rise. With few acceptable treatment options available, due to drug resistance evolution in tapeworms or negative drug impacts on fish, alternative controls against the parasite are in demand. In a 10-month commercial-scale study involving standard sea cages and lice barrier snorkel sea cages of different depths (4, 8, 12 and 16 m), we examined if this depth-based preventive technology primarily used against salmon lice (Lepeophtheirus salmonis) also reduced tapeworm infestation. A submerged net roof opening to a central barrier tube (snorkel) was added to standard cages to move salmon deeper but retain surface access; a cage manipulation that avoids contact with mostly surface-dwelling salmon lice larvae and may also separate fish from calanoid copepods, the intermediate hosts of Eubothrium sp. Salmon populations in unmodified standard cages had higher tapeworm prevalence (63–93%) and abundances (4.6–5.7 Eubothrium sp. fish−1) than those in snorkel cages (20–36% and 0.2–0.6 Eubothrium sp. fish−1). Based on these observations, tapeworm prevention could be another beneficial parasite management outcome of snorkel cage technology or other depth-based prevention techniques against salmon lice. publishedVersion Article in Journal/Newspaper Atlantic salmon Copepods Institute for Marine Research: Brage IMR Aquaculture 541 736774 |
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Open Polar |
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Institute for Marine Research: Brage IMR |
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ftimr |
language |
English |
description |
Reports of infestation by marine parasitic tapeworms (Eubothrium sp.) and an associated growth reduction in Norwegian farmed salmon are on the rise. With few acceptable treatment options available, due to drug resistance evolution in tapeworms or negative drug impacts on fish, alternative controls against the parasite are in demand. In a 10-month commercial-scale study involving standard sea cages and lice barrier snorkel sea cages of different depths (4, 8, 12 and 16 m), we examined if this depth-based preventive technology primarily used against salmon lice (Lepeophtheirus salmonis) also reduced tapeworm infestation. A submerged net roof opening to a central barrier tube (snorkel) was added to standard cages to move salmon deeper but retain surface access; a cage manipulation that avoids contact with mostly surface-dwelling salmon lice larvae and may also separate fish from calanoid copepods, the intermediate hosts of Eubothrium sp. Salmon populations in unmodified standard cages had higher tapeworm prevalence (63–93%) and abundances (4.6–5.7 Eubothrium sp. fish−1) than those in snorkel cages (20–36% and 0.2–0.6 Eubothrium sp. fish−1). Based on these observations, tapeworm prevention could be another beneficial parasite management outcome of snorkel cage technology or other depth-based prevention techniques against salmon lice. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Geitung, Lena Wright, Daniel William Stien, Lars Helge Oppedal, Frode Karlsbakk, Egil Erlingsson |
spellingShingle |
Geitung, Lena Wright, Daniel William Stien, Lars Helge Oppedal, Frode Karlsbakk, Egil Erlingsson Tapeworm (Eubothrium sp.) infestation in sea caged Atlantic salmon decreased by lice barrier snorkels during a commercial-scale study |
author_facet |
Geitung, Lena Wright, Daniel William Stien, Lars Helge Oppedal, Frode Karlsbakk, Egil Erlingsson |
author_sort |
Geitung, Lena |
title |
Tapeworm (Eubothrium sp.) infestation in sea caged Atlantic salmon decreased by lice barrier snorkels during a commercial-scale study |
title_short |
Tapeworm (Eubothrium sp.) infestation in sea caged Atlantic salmon decreased by lice barrier snorkels during a commercial-scale study |
title_full |
Tapeworm (Eubothrium sp.) infestation in sea caged Atlantic salmon decreased by lice barrier snorkels during a commercial-scale study |
title_fullStr |
Tapeworm (Eubothrium sp.) infestation in sea caged Atlantic salmon decreased by lice barrier snorkels during a commercial-scale study |
title_full_unstemmed |
Tapeworm (Eubothrium sp.) infestation in sea caged Atlantic salmon decreased by lice barrier snorkels during a commercial-scale study |
title_sort |
tapeworm (eubothrium sp.) infestation in sea caged atlantic salmon decreased by lice barrier snorkels during a commercial-scale study |
publishDate |
2021 |
url |
https://hdl.handle.net/11250/2765719 https://doi.org/10.1016/j.aquaculture.2021.736774 |
genre |
Atlantic salmon Copepods |
genre_facet |
Atlantic salmon Copepods |
op_source |
1-7 541 Aquaculture |
op_relation |
Aquaculture. 2021, 541 1-7. urn:issn:0044-8486 https://hdl.handle.net/11250/2765719 https://doi.org/10.1016/j.aquaculture.2021.736774 cristin:1921958 |
op_doi |
https://doi.org/10.1016/j.aquaculture.2021.736774 |
container_title |
Aquaculture |
container_volume |
541 |
container_start_page |
736774 |
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1766362948958158848 |