Triploid Atlantic salmon (Salmo salar) may have increased risk of primary field outbreaks of infectious salmon anaemia
The impact that escaped farmed fish may have on wild populations is of major concern for Atlantic salmon (Salmo salar) farming. Triploid fish, being infertile, were originally introduced to mitigate the genetic impact of escaped fish. In the recent years, an increase in the number of infectious salm...
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Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9805046/ http://www.ncbi.nlm.nih.gov/pubmed/35914108 https://doi.org/10.1111/jfd.13695 |
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ftpubmed:oai:pubmedcentral.nih.gov:9805046 2023-05-15T15:31:02+02:00 Triploid Atlantic salmon (Salmo salar) may have increased risk of primary field outbreaks of infectious salmon anaemia Aunsmo, Arnfinn Martinsen, Lisbeth Bruheim, Torkjel Sekkelsten‐Kindt, Mats Martin Sandtrø, Ane Gaasø, Solveig Braaen, Stine Rimstad, Espen 2022-08-01 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9805046/ http://www.ncbi.nlm.nih.gov/pubmed/35914108 https://doi.org/10.1111/jfd.13695 en eng John Wiley and Sons Inc. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9805046/ http://www.ncbi.nlm.nih.gov/pubmed/35914108 http://dx.doi.org/10.1111/jfd.13695 © 2022 The Authors. Journal of Fish Diseases published by John Wiley & Sons Ltd. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. CC-BY J Fish Dis Research Articles Text 2022 ftpubmed https://doi.org/10.1111/jfd.13695 2023-01-08T02:01:58Z The impact that escaped farmed fish may have on wild populations is of major concern for Atlantic salmon (Salmo salar) farming. Triploid fish, being infertile, were originally introduced to mitigate the genetic impact of escaped fish. In the recent years, an increase in the number of infectious salmon anaemia (ISA) outbreaks in Norway has been observed, mainly in the northern parts, which is also where farming of triploid fish has been licensed. The present study investigated the susceptibility of triploid Atlantic salmon to ISA both by field observations and experimental infections. Based on field observations, we found an increased susceptibility, with 9.4 increased odds to primary ISA outbreaks in triploid fish versus diploid fish at production‐site level, and a tendency of increased odds (3.4) of ISA in triploid fish at individual cage level at sited with primary outbreaks. At some sites, ISA outbreaks were only diagnosed in cages with triploid fish and not in cages with diploid fish. Primary ISA outbreaks are the source for further spread of the disease, and it is noteworthy that in an experimental trial we found significantly more viral RNA in non‐ISA‐vaccinated triploid than in non‐ISA‐vaccinated diploid fish at the peak of the infection. Interestingly, the notable differences of susceptibility to ISA for non‐ISA vaccinated diploid and triploid fish observed in field were not repeated experimentally. The possible increased risk of ISA should be considered when evaluating the costs and benefits of triploid salmon in farming. It is recommended to keep triploid and diploid fish in biosecure separated sites, or that triploid fish are not farmed at all. Text Atlantic salmon Salmo salar PubMed Central (PMC) Norway Journal of Fish Diseases 45 11 1733 1743 |
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Research Articles |
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Research Articles Aunsmo, Arnfinn Martinsen, Lisbeth Bruheim, Torkjel Sekkelsten‐Kindt, Mats Martin Sandtrø, Ane Gaasø, Solveig Braaen, Stine Rimstad, Espen Triploid Atlantic salmon (Salmo salar) may have increased risk of primary field outbreaks of infectious salmon anaemia |
topic_facet |
Research Articles |
description |
The impact that escaped farmed fish may have on wild populations is of major concern for Atlantic salmon (Salmo salar) farming. Triploid fish, being infertile, were originally introduced to mitigate the genetic impact of escaped fish. In the recent years, an increase in the number of infectious salmon anaemia (ISA) outbreaks in Norway has been observed, mainly in the northern parts, which is also where farming of triploid fish has been licensed. The present study investigated the susceptibility of triploid Atlantic salmon to ISA both by field observations and experimental infections. Based on field observations, we found an increased susceptibility, with 9.4 increased odds to primary ISA outbreaks in triploid fish versus diploid fish at production‐site level, and a tendency of increased odds (3.4) of ISA in triploid fish at individual cage level at sited with primary outbreaks. At some sites, ISA outbreaks were only diagnosed in cages with triploid fish and not in cages with diploid fish. Primary ISA outbreaks are the source for further spread of the disease, and it is noteworthy that in an experimental trial we found significantly more viral RNA in non‐ISA‐vaccinated triploid than in non‐ISA‐vaccinated diploid fish at the peak of the infection. Interestingly, the notable differences of susceptibility to ISA for non‐ISA vaccinated diploid and triploid fish observed in field were not repeated experimentally. The possible increased risk of ISA should be considered when evaluating the costs and benefits of triploid salmon in farming. It is recommended to keep triploid and diploid fish in biosecure separated sites, or that triploid fish are not farmed at all. |
format |
Text |
author |
Aunsmo, Arnfinn Martinsen, Lisbeth Bruheim, Torkjel Sekkelsten‐Kindt, Mats Martin Sandtrø, Ane Gaasø, Solveig Braaen, Stine Rimstad, Espen |
author_facet |
Aunsmo, Arnfinn Martinsen, Lisbeth Bruheim, Torkjel Sekkelsten‐Kindt, Mats Martin Sandtrø, Ane Gaasø, Solveig Braaen, Stine Rimstad, Espen |
author_sort |
Aunsmo, Arnfinn |
title |
Triploid Atlantic salmon (Salmo salar) may have increased risk of primary field outbreaks of infectious salmon anaemia |
title_short |
Triploid Atlantic salmon (Salmo salar) may have increased risk of primary field outbreaks of infectious salmon anaemia |
title_full |
Triploid Atlantic salmon (Salmo salar) may have increased risk of primary field outbreaks of infectious salmon anaemia |
title_fullStr |
Triploid Atlantic salmon (Salmo salar) may have increased risk of primary field outbreaks of infectious salmon anaemia |
title_full_unstemmed |
Triploid Atlantic salmon (Salmo salar) may have increased risk of primary field outbreaks of infectious salmon anaemia |
title_sort |
triploid atlantic salmon (salmo salar) may have increased risk of primary field outbreaks of infectious salmon anaemia |
publisher |
John Wiley and Sons Inc. |
publishDate |
2022 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9805046/ http://www.ncbi.nlm.nih.gov/pubmed/35914108 https://doi.org/10.1111/jfd.13695 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
J Fish Dis |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9805046/ http://www.ncbi.nlm.nih.gov/pubmed/35914108 http://dx.doi.org/10.1111/jfd.13695 |
op_rights |
© 2022 The Authors. Journal of Fish Diseases published by John Wiley & Sons Ltd. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1111/jfd.13695 |
container_title |
Journal of Fish Diseases |
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45 |
container_issue |
11 |
container_start_page |
1733 |
op_container_end_page |
1743 |
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1766361529082445824 |