Multiple Aeromonas strains isolated from Atlantic salmon ( Salmo salar ) displaying red skin disease signs in Scandinavian rivers
Abstract Since 2014, Atlantic salmon ( Salmo salar L.) displaying clinical signs of red skin disease (RSD), including haemorrhagic and ulcerative skin lesions, have been repeatedly observed in Swedish rivers. Although the disease has since been reported in other countries, including Norway, Denmark,...
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crwiley:10.1111/jfd.13870 2024-04-28T08:13:19+00:00 Multiple Aeromonas strains isolated from Atlantic salmon ( Salmo salar ) displaying red skin disease signs in Scandinavian rivers Lagadec, Erwan Mjølnerød, Even Bysveen Jensen, Øyvind Marius Plarre, Heidrun Nylund, Are Miljødirektoratet 2023 http://dx.doi.org/10.1111/jfd.13870 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfd.13870 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Journal of Fish Diseases volume 47, issue 1 ISSN 0140-7775 1365-2761 Veterinary (miscellaneous) Aquatic Science journal-article 2023 crwiley https://doi.org/10.1111/jfd.13870 2024-04-02T08:46:43Z Abstract Since 2014, Atlantic salmon ( Salmo salar L.) displaying clinical signs of red skin disease (RSD), including haemorrhagic and ulcerative skin lesions, have been repeatedly observed in Swedish rivers. Although the disease has since been reported in other countries, including Norway, Denmark, Ireland and the UK, no pathogen has so far been conclusively associated with RSD. In this study, the presence of 17 fish pathogens was investigated through qPCR in 18 returning Atlantic salmon with clinical signs of the disease in rivers in Sweden and Norway between 2019 and 2021. Several potential pathogens were repeatedly detected, including a protozoan ( Ichthyobodo spp.), an oomycete ( Saprolegnia spp.) and several bacteria ( Yersinia ruckeri , Candidatus Branchiomonas cysticola, Aeromonas spp.). Cultivation on different media from ulcers and internal organs revealed high concentrations of rod‐shaped bacteria typical of Aeromonadaceae . Multilocus phylogenetic analysis of different clones and single gene phylogenies of sequences obtained from the fish revealed concurrent isolation of several bacterial strains belonging to the species A. bestiarum , A. piscicola and A. sobria . While these bacterial infections may be secondary, these findings are significant for future studies on RSD and should guide the investigation of future outbreaks. However, the involvement of Aeromonas spp. as putative primary etiological agents of the disease cannot be ruled out and needs to be assessed by challenge experiments. Article in Journal/Newspaper Atlantic salmon Salmo salar Wiley Online Library Journal of Fish Diseases |
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Veterinary (miscellaneous) Aquatic Science |
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Veterinary (miscellaneous) Aquatic Science Lagadec, Erwan Mjølnerød, Even Bysveen Jensen, Øyvind Marius Plarre, Heidrun Nylund, Are Multiple Aeromonas strains isolated from Atlantic salmon ( Salmo salar ) displaying red skin disease signs in Scandinavian rivers |
topic_facet |
Veterinary (miscellaneous) Aquatic Science |
description |
Abstract Since 2014, Atlantic salmon ( Salmo salar L.) displaying clinical signs of red skin disease (RSD), including haemorrhagic and ulcerative skin lesions, have been repeatedly observed in Swedish rivers. Although the disease has since been reported in other countries, including Norway, Denmark, Ireland and the UK, no pathogen has so far been conclusively associated with RSD. In this study, the presence of 17 fish pathogens was investigated through qPCR in 18 returning Atlantic salmon with clinical signs of the disease in rivers in Sweden and Norway between 2019 and 2021. Several potential pathogens were repeatedly detected, including a protozoan ( Ichthyobodo spp.), an oomycete ( Saprolegnia spp.) and several bacteria ( Yersinia ruckeri , Candidatus Branchiomonas cysticola, Aeromonas spp.). Cultivation on different media from ulcers and internal organs revealed high concentrations of rod‐shaped bacteria typical of Aeromonadaceae . Multilocus phylogenetic analysis of different clones and single gene phylogenies of sequences obtained from the fish revealed concurrent isolation of several bacterial strains belonging to the species A. bestiarum , A. piscicola and A. sobria . While these bacterial infections may be secondary, these findings are significant for future studies on RSD and should guide the investigation of future outbreaks. However, the involvement of Aeromonas spp. as putative primary etiological agents of the disease cannot be ruled out and needs to be assessed by challenge experiments. |
author2 |
Miljødirektoratet |
format |
Article in Journal/Newspaper |
author |
Lagadec, Erwan Mjølnerød, Even Bysveen Jensen, Øyvind Marius Plarre, Heidrun Nylund, Are |
author_facet |
Lagadec, Erwan Mjølnerød, Even Bysveen Jensen, Øyvind Marius Plarre, Heidrun Nylund, Are |
author_sort |
Lagadec, Erwan |
title |
Multiple Aeromonas strains isolated from Atlantic salmon ( Salmo salar ) displaying red skin disease signs in Scandinavian rivers |
title_short |
Multiple Aeromonas strains isolated from Atlantic salmon ( Salmo salar ) displaying red skin disease signs in Scandinavian rivers |
title_full |
Multiple Aeromonas strains isolated from Atlantic salmon ( Salmo salar ) displaying red skin disease signs in Scandinavian rivers |
title_fullStr |
Multiple Aeromonas strains isolated from Atlantic salmon ( Salmo salar ) displaying red skin disease signs in Scandinavian rivers |
title_full_unstemmed |
Multiple Aeromonas strains isolated from Atlantic salmon ( Salmo salar ) displaying red skin disease signs in Scandinavian rivers |
title_sort |
multiple aeromonas strains isolated from atlantic salmon ( salmo salar ) displaying red skin disease signs in scandinavian rivers |
publisher |
Wiley |
publishDate |
2023 |
url |
http://dx.doi.org/10.1111/jfd.13870 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfd.13870 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Journal of Fish Diseases volume 47, issue 1 ISSN 0140-7775 1365-2761 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1111/jfd.13870 |
container_title |
Journal of Fish Diseases |
_version_ |
1797579872811352064 |