Indications for a vertical transmission pathway of piscine myocarditis virus in Atlantic salmon ( Salmo salar L.)
Abstract Losses due to cardiomyopathy syndrome (CMS) keep increasing in salmon‐producing countries in the North‐Atlantic. Recently, Piscine myocarditis virus (PMCV) has been detected in post‐smolts shortly after sea‐transfer, indicating a possible carry‐over from the hatcheries. In addition, there a...
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crwiley:10.1111/jfd.12990 2024-09-15T17:56:13+00:00 Indications for a vertical transmission pathway of piscine myocarditis virus in Atlantic salmon ( Salmo salar L.) Bang Jensen, Britt Nylund, Stian Svendsen, Julie Christine Ski, Paul‐Martin R. Takle, Harald Fiskeri - og havbruksnæringens forskningsfond 2019 http://dx.doi.org/10.1111/jfd.12990 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfd.12990 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/jfd.12990 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Journal of Fish Diseases volume 42, issue 6, page 825-833 ISSN 0140-7775 1365-2761 journal-article 2019 crwiley https://doi.org/10.1111/jfd.12990 2024-07-23T04:12:55Z Abstract Losses due to cardiomyopathy syndrome (CMS) keep increasing in salmon‐producing countries in the North‐Atlantic. Recently, Piscine myocarditis virus (PMCV) has been detected in post‐smolts shortly after sea‐transfer, indicating a possible carry‐over from the hatcheries. In addition, there are reports of prevalences of PMCV as high as 70%–90% in certain groups of broodfish, and a recent outbreak of CMS in the Faroe Islands has been linked to the importation of eggs from a CMS‐endemic area. Thus, there is a need to investigate whether PMCV can be transmitted vertically from infected broodstock to their progeny. In the present study, samples from eggs, larvae, fingerlings and presmolt originating from PMCV‐positive broodstock from two commercial Atlantic salmon producers were tested for PMCV. The prevalence of PMCV in the broodstock was 98% in the hearts, 69% in the roe and 59% in the milt. Piscine myocarditis virus was detected in all stages of the progeny until and including the 40 g stage. Piscine myocarditis virus was also detected in presmolt sampled for tissue tropism. This provides farmers with several options for minimizing the risk of transfer of PMCV from broodstock to progeny, including screening of broodstock and aiming to use only those that are negative for PMCV or have low levels of virus. Article in Journal/Newspaper Atlantic salmon Faroe Islands North Atlantic Salmo salar Wiley Online Library Journal of Fish Diseases 42 6 825 833 |
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Wiley Online Library |
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crwiley |
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English |
description |
Abstract Losses due to cardiomyopathy syndrome (CMS) keep increasing in salmon‐producing countries in the North‐Atlantic. Recently, Piscine myocarditis virus (PMCV) has been detected in post‐smolts shortly after sea‐transfer, indicating a possible carry‐over from the hatcheries. In addition, there are reports of prevalences of PMCV as high as 70%–90% in certain groups of broodfish, and a recent outbreak of CMS in the Faroe Islands has been linked to the importation of eggs from a CMS‐endemic area. Thus, there is a need to investigate whether PMCV can be transmitted vertically from infected broodstock to their progeny. In the present study, samples from eggs, larvae, fingerlings and presmolt originating from PMCV‐positive broodstock from two commercial Atlantic salmon producers were tested for PMCV. The prevalence of PMCV in the broodstock was 98% in the hearts, 69% in the roe and 59% in the milt. Piscine myocarditis virus was detected in all stages of the progeny until and including the 40 g stage. Piscine myocarditis virus was also detected in presmolt sampled for tissue tropism. This provides farmers with several options for minimizing the risk of transfer of PMCV from broodstock to progeny, including screening of broodstock and aiming to use only those that are negative for PMCV or have low levels of virus. |
author2 |
Fiskeri - og havbruksnæringens forskningsfond |
format |
Article in Journal/Newspaper |
author |
Bang Jensen, Britt Nylund, Stian Svendsen, Julie Christine Ski, Paul‐Martin R. Takle, Harald |
spellingShingle |
Bang Jensen, Britt Nylund, Stian Svendsen, Julie Christine Ski, Paul‐Martin R. Takle, Harald Indications for a vertical transmission pathway of piscine myocarditis virus in Atlantic salmon ( Salmo salar L.) |
author_facet |
Bang Jensen, Britt Nylund, Stian Svendsen, Julie Christine Ski, Paul‐Martin R. Takle, Harald |
author_sort |
Bang Jensen, Britt |
title |
Indications for a vertical transmission pathway of piscine myocarditis virus in Atlantic salmon ( Salmo salar L.) |
title_short |
Indications for a vertical transmission pathway of piscine myocarditis virus in Atlantic salmon ( Salmo salar L.) |
title_full |
Indications for a vertical transmission pathway of piscine myocarditis virus in Atlantic salmon ( Salmo salar L.) |
title_fullStr |
Indications for a vertical transmission pathway of piscine myocarditis virus in Atlantic salmon ( Salmo salar L.) |
title_full_unstemmed |
Indications for a vertical transmission pathway of piscine myocarditis virus in Atlantic salmon ( Salmo salar L.) |
title_sort |
indications for a vertical transmission pathway of piscine myocarditis virus in atlantic salmon ( salmo salar l.) |
publisher |
Wiley |
publishDate |
2019 |
url |
http://dx.doi.org/10.1111/jfd.12990 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfd.12990 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/jfd.12990 |
genre |
Atlantic salmon Faroe Islands North Atlantic Salmo salar |
genre_facet |
Atlantic salmon Faroe Islands North Atlantic Salmo salar |
op_source |
Journal of Fish Diseases volume 42, issue 6, page 825-833 ISSN 0140-7775 1365-2761 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1111/jfd.12990 |
container_title |
Journal of Fish Diseases |
container_volume |
42 |
container_issue |
6 |
container_start_page |
825 |
op_container_end_page |
833 |
_version_ |
1810432431880142848 |