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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Language: | English |
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Online Access: | https://hdl.handle.net/11250/2761015 https://doi.org/10.1016/j.aquaculture.2021.736774 |
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ftunivbergen:oai:bora.uib.no:11250/2761015 2023-05-15T15:32:28+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 W. Stien, Lars Helge Oppedal, Frode Karlsbakk, Egil 2021 application/pdf https://hdl.handle.net/11250/2761015 https://doi.org/10.1016/j.aquaculture.2021.736774 eng eng Elsevier urn:issn:0044-8486 https://hdl.handle.net/11250/2761015 https://doi.org/10.1016/j.aquaculture.2021.736774 Aquaculture. 2021, 541, 736774. Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright 2021 the authors. 736774 Aquaculture 541 Journal article 2021 ftunivbergen https://doi.org/10.1016/j.aquaculture.2021.736774 2023-03-14T17:42:56Z 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 University of Bergen: Bergen Open Research Archive (BORA-UiB) Aquaculture 541 736774 |
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Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
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ftunivbergen |
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 W. Stien, Lars Helge Oppedal, Frode Karlsbakk, Egil |
spellingShingle |
Geitung, Lena Wright, Daniel W. Stien, Lars Helge Oppedal, Frode Karlsbakk, Egil 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 W. Stien, Lars Helge Oppedal, Frode Karlsbakk, Egil |
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 |
publisher |
Elsevier |
publishDate |
2021 |
url |
https://hdl.handle.net/11250/2761015 https://doi.org/10.1016/j.aquaculture.2021.736774 |
genre |
Atlantic salmon Copepods |
genre_facet |
Atlantic salmon Copepods |
op_source |
736774 Aquaculture 541 |
op_relation |
urn:issn:0044-8486 https://hdl.handle.net/11250/2761015 https://doi.org/10.1016/j.aquaculture.2021.736774 Aquaculture. 2021, 541, 736774. |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright 2021 the authors. |
op_doi |
https://doi.org/10.1016/j.aquaculture.2021.736774 |
container_title |
Aquaculture |
container_volume |
541 |
container_start_page |
736774 |
_version_ |
1766362966787096576 |