Prevalence of piscine orthoreovirus and salmonid alphavirus in sea-caught returning adult Atlantic salmon (Salmo salar L.) in northern Norway
Heart and skeletal muscle inflammation (HSMI) caused by piscine orthoreovirus (PRV) and pancreas disease (PD) caused by salmonid alphavirus (SAV) are among the most prevalent viral diseases of Atlantic salmon farmed in Norway. There are limited data about the impact of disease in farmed salmon on wi...
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Online Access: | http://hdl.handle.net/11250/2560342 https://doi.org/10.1111/jfd.12785 |
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ftimr:oai:imr.brage.unit.no:11250/2560342 2023-05-15T15:30:28+02:00 Prevalence of piscine orthoreovirus and salmonid alphavirus in sea-caught returning adult Atlantic salmon (Salmo salar L.) in northern Norway Madhun, Abdullah Sami Isachsen, Cecilie Helen Omdal Strandenes, Linn Maren Einen, Ann Cathrine B. Mæhle, Stig Wennevik, Vidar Niemelä, Eero Svåsand, Terje Karlsbakk, Egil 2018 application/pdf http://hdl.handle.net/11250/2560342 https://doi.org/10.1111/jfd.12785 eng eng Journal of Fish Diseases. 2018, 41 (5), 797-803. urn:issn:0140-7775 http://hdl.handle.net/11250/2560342 https://doi.org/10.1111/jfd.12785 cristin:1587987 797-803 41 Journal of Fish Diseases 5 Journal article Peer reviewed 2018 ftimr https://doi.org/10.1111/jfd.12785 2021-09-23T20:15:23Z Heart and skeletal muscle inflammation (HSMI) caused by piscine orthoreovirus (PRV) and pancreas disease (PD) caused by salmonid alphavirus (SAV) are among the most prevalent viral diseases of Atlantic salmon farmed in Norway. There are limited data about the impact of disease in farmed salmon on wild salmon populations. Therefore, the prevalence of PRV and SAV in returning salmon caught in six sea sites was determined using real‐time RT‐PCR analyses. Of 419 salmon tested, 15.8% tested positive for PRV, while none were positive for SAV. However, scale reading revealed that 10% of the salmon had escaped from farms. The prevalence of PRV in wild salmon (8%) was significantly lower than in farm escapees (86%), and increased with fish length (proxy for age). Sequencing of the S1 gene of PRV from 39 infected fish revealed a mix of genotypes. The observed increase in PRV prevalence with fish age and the lack of phylogeographic structure of the virus could be explained by virus transmission in the feeding areas. Our results highlight the need for studies about the prevalence of PRV and other pathogens in Atlantic salmon in its oceanic phase. publishedVersion Article in Journal/Newspaper Atlantic salmon Northern Norway Salmo salar Institute for Marine Research: Brage IMR Norway Sav’ ENVELOPE(156.400,156.400,68.817,68.817) Journal of Fish Diseases 41 5 797 803 |
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Open Polar |
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Institute for Marine Research: Brage IMR |
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ftimr |
language |
English |
description |
Heart and skeletal muscle inflammation (HSMI) caused by piscine orthoreovirus (PRV) and pancreas disease (PD) caused by salmonid alphavirus (SAV) are among the most prevalent viral diseases of Atlantic salmon farmed in Norway. There are limited data about the impact of disease in farmed salmon on wild salmon populations. Therefore, the prevalence of PRV and SAV in returning salmon caught in six sea sites was determined using real‐time RT‐PCR analyses. Of 419 salmon tested, 15.8% tested positive for PRV, while none were positive for SAV. However, scale reading revealed that 10% of the salmon had escaped from farms. The prevalence of PRV in wild salmon (8%) was significantly lower than in farm escapees (86%), and increased with fish length (proxy for age). Sequencing of the S1 gene of PRV from 39 infected fish revealed a mix of genotypes. The observed increase in PRV prevalence with fish age and the lack of phylogeographic structure of the virus could be explained by virus transmission in the feeding areas. Our results highlight the need for studies about the prevalence of PRV and other pathogens in Atlantic salmon in its oceanic phase. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Madhun, Abdullah Sami Isachsen, Cecilie Helen Omdal Strandenes, Linn Maren Einen, Ann Cathrine B. Mæhle, Stig Wennevik, Vidar Niemelä, Eero Svåsand, Terje Karlsbakk, Egil |
spellingShingle |
Madhun, Abdullah Sami Isachsen, Cecilie Helen Omdal Strandenes, Linn Maren Einen, Ann Cathrine B. Mæhle, Stig Wennevik, Vidar Niemelä, Eero Svåsand, Terje Karlsbakk, Egil Prevalence of piscine orthoreovirus and salmonid alphavirus in sea-caught returning adult Atlantic salmon (Salmo salar L.) in northern Norway |
author_facet |
Madhun, Abdullah Sami Isachsen, Cecilie Helen Omdal Strandenes, Linn Maren Einen, Ann Cathrine B. Mæhle, Stig Wennevik, Vidar Niemelä, Eero Svåsand, Terje Karlsbakk, Egil |
author_sort |
Madhun, Abdullah Sami |
title |
Prevalence of piscine orthoreovirus and salmonid alphavirus in sea-caught returning adult Atlantic salmon (Salmo salar L.) in northern Norway |
title_short |
Prevalence of piscine orthoreovirus and salmonid alphavirus in sea-caught returning adult Atlantic salmon (Salmo salar L.) in northern Norway |
title_full |
Prevalence of piscine orthoreovirus and salmonid alphavirus in sea-caught returning adult Atlantic salmon (Salmo salar L.) in northern Norway |
title_fullStr |
Prevalence of piscine orthoreovirus and salmonid alphavirus in sea-caught returning adult Atlantic salmon (Salmo salar L.) in northern Norway |
title_full_unstemmed |
Prevalence of piscine orthoreovirus and salmonid alphavirus in sea-caught returning adult Atlantic salmon (Salmo salar L.) in northern Norway |
title_sort |
prevalence of piscine orthoreovirus and salmonid alphavirus in sea-caught returning adult atlantic salmon (salmo salar l.) in northern norway |
publishDate |
2018 |
url |
http://hdl.handle.net/11250/2560342 https://doi.org/10.1111/jfd.12785 |
long_lat |
ENVELOPE(156.400,156.400,68.817,68.817) |
geographic |
Norway Sav’ |
geographic_facet |
Norway Sav’ |
genre |
Atlantic salmon Northern Norway Salmo salar |
genre_facet |
Atlantic salmon Northern Norway Salmo salar |
op_source |
797-803 41 Journal of Fish Diseases 5 |
op_relation |
Journal of Fish Diseases. 2018, 41 (5), 797-803. urn:issn:0140-7775 http://hdl.handle.net/11250/2560342 https://doi.org/10.1111/jfd.12785 cristin:1587987 |
op_doi |
https://doi.org/10.1111/jfd.12785 |
container_title |
Journal of Fish Diseases |
container_volume |
41 |
container_issue |
5 |
container_start_page |
797 |
op_container_end_page |
803 |
_version_ |
1766360912314236928 |