UDN-like disease in spawners of salmonid fishes from the Rega, Parsęta, Wieprza, and Słupia rivers in 2009-2012
Since 2007 in Poland, skin lesions have been observed in salmon (Salmo salar L.) and sea trout (Salmo trutta L.) entering Pomeranian rivers to spawn. The clinical picture of affected fish resembled ulcerative dermal necrosis (UDN), a disease of unknown etiology affecting mainly the scalps of wild sa...
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ftdoajarticles:oai:doaj.org/article:f194998eda984c5098086c27c86ef69e 2023-10-09T21:55:43+02:00 UDN-like disease in spawners of salmonid fishes from the Rega, Parsęta, Wieprza, and Słupia rivers in 2009-2012 Kazuń Barbara Terech-Majewska Elżbieta Grudniewska Joanna Kazuń Krzysztof 2023-06-01T00:00:00Z https://doi.org/10.2478/aopf-2023-0007 https://doaj.org/article/f194998eda984c5098086c27c86ef69e EN eng Sciendo https://doi.org/10.2478/aopf-2023-0007 https://doaj.org/toc/2545-059X 2545-059X doi:10.2478/aopf-2023-0007 https://doaj.org/article/f194998eda984c5098086c27c86ef69e Fisheries & Aquatic Life, Vol 31, Iss 2, Pp 64-71 (2023) sea trout ulcerative dermal necrosis pomeranian rivers Aquaculture. Fisheries. Angling SH1-691 article 2023 ftdoajarticles https://doi.org/10.2478/aopf-2023-0007 2023-09-17T00:38:48Z Since 2007 in Poland, skin lesions have been observed in salmon (Salmo salar L.) and sea trout (Salmo trutta L.) entering Pomeranian rivers to spawn. The clinical picture of affected fish resembled ulcerative dermal necrosis (UDN), a disease of unknown etiology affecting mainly the scalps of wild salmonids. The aim of the 2009-2012 study was to determine with microbiological tests the etiological agent of the skin lesions observed in salmonids entering the Pomeranian rivers. During the study, a total of 13 species of Gram-negative bacteria belonging mainly to the Yersiniaceae, Enterobacteriaceae, and Pseudomonadaceae families were isolated and identified from the skin and kidneys of diseased fish. The Gram-positive bacteria isolated were aerobic, hemolytic granules of the genus Streptococcus. Mycological examinations on damaged fish body surfaces revealed yeasts of the genus Rhodotorula and fungi of the family Saprolegniaceae. The results of our study did not permit us to identify unequivocally the direct cause of the fish diseases analyzed since all the bacteria isolated during the study are normally found in aquatic environments. Some of the isolated bacteria identified were assumed to be potentially pathogenic to fish. The fungal infections observed were probably secondary and only exacerbated ongoing disease processes. Article in Journal/Newspaper Salmo salar Directory of Open Access Journals: DOAJ Articles Fisheries & Aquatic Life 31 2 64 71 |
institution |
Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
sea trout ulcerative dermal necrosis pomeranian rivers Aquaculture. Fisheries. Angling SH1-691 |
spellingShingle |
sea trout ulcerative dermal necrosis pomeranian rivers Aquaculture. Fisheries. Angling SH1-691 Kazuń Barbara Terech-Majewska Elżbieta Grudniewska Joanna Kazuń Krzysztof UDN-like disease in spawners of salmonid fishes from the Rega, Parsęta, Wieprza, and Słupia rivers in 2009-2012 |
topic_facet |
sea trout ulcerative dermal necrosis pomeranian rivers Aquaculture. Fisheries. Angling SH1-691 |
description |
Since 2007 in Poland, skin lesions have been observed in salmon (Salmo salar L.) and sea trout (Salmo trutta L.) entering Pomeranian rivers to spawn. The clinical picture of affected fish resembled ulcerative dermal necrosis (UDN), a disease of unknown etiology affecting mainly the scalps of wild salmonids. The aim of the 2009-2012 study was to determine with microbiological tests the etiological agent of the skin lesions observed in salmonids entering the Pomeranian rivers. During the study, a total of 13 species of Gram-negative bacteria belonging mainly to the Yersiniaceae, Enterobacteriaceae, and Pseudomonadaceae families were isolated and identified from the skin and kidneys of diseased fish. The Gram-positive bacteria isolated were aerobic, hemolytic granules of the genus Streptococcus. Mycological examinations on damaged fish body surfaces revealed yeasts of the genus Rhodotorula and fungi of the family Saprolegniaceae. The results of our study did not permit us to identify unequivocally the direct cause of the fish diseases analyzed since all the bacteria isolated during the study are normally found in aquatic environments. Some of the isolated bacteria identified were assumed to be potentially pathogenic to fish. The fungal infections observed were probably secondary and only exacerbated ongoing disease processes. |
format |
Article in Journal/Newspaper |
author |
Kazuń Barbara Terech-Majewska Elżbieta Grudniewska Joanna Kazuń Krzysztof |
author_facet |
Kazuń Barbara Terech-Majewska Elżbieta Grudniewska Joanna Kazuń Krzysztof |
author_sort |
Kazuń Barbara |
title |
UDN-like disease in spawners of salmonid fishes from the Rega, Parsęta, Wieprza, and Słupia rivers in 2009-2012 |
title_short |
UDN-like disease in spawners of salmonid fishes from the Rega, Parsęta, Wieprza, and Słupia rivers in 2009-2012 |
title_full |
UDN-like disease in spawners of salmonid fishes from the Rega, Parsęta, Wieprza, and Słupia rivers in 2009-2012 |
title_fullStr |
UDN-like disease in spawners of salmonid fishes from the Rega, Parsęta, Wieprza, and Słupia rivers in 2009-2012 |
title_full_unstemmed |
UDN-like disease in spawners of salmonid fishes from the Rega, Parsęta, Wieprza, and Słupia rivers in 2009-2012 |
title_sort |
udn-like disease in spawners of salmonid fishes from the rega, parsęta, wieprza, and słupia rivers in 2009-2012 |
publisher |
Sciendo |
publishDate |
2023 |
url |
https://doi.org/10.2478/aopf-2023-0007 https://doaj.org/article/f194998eda984c5098086c27c86ef69e |
genre |
Salmo salar |
genre_facet |
Salmo salar |
op_source |
Fisheries & Aquatic Life, Vol 31, Iss 2, Pp 64-71 (2023) |
op_relation |
https://doi.org/10.2478/aopf-2023-0007 https://doaj.org/toc/2545-059X 2545-059X doi:10.2478/aopf-2023-0007 https://doaj.org/article/f194998eda984c5098086c27c86ef69e |
op_doi |
https://doi.org/10.2478/aopf-2023-0007 |
container_title |
Fisheries & Aquatic Life |
container_volume |
31 |
container_issue |
2 |
container_start_page |
64 |
op_container_end_page |
71 |
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1779319717947768832 |