A previously unknown disease of farmed atlantic salmon: pathology and establishment of bacterial aetiology
A previously unknown disease of Atlantic salmon Salmo salar occurred on a seawater farm in Ireland, during 1992 and 1993. The gross pathology and the histopathology of the disease are described. A distinctive histological feature of the disease was the presence of intracellular Gram-negative bacteri...
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Inter-Research Science Center
1994
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ftnuigalway:oai:https://researchrepository.universityofgalway.ie:10379/9761 2024-09-30T14:32:20+00:00 A previously unknown disease of farmed atlantic salmon: pathology and establishment of bacterial aetiology Palmer, R Drinan, E Murphy, T 1994-01-01 http://hdl.handle.net/10379/9761 https://doi.org/10.13025/24246 https://doi.org/10.3354/dao019007 unknown Inter-Research Science Center Diseases of Aquatic Organisms Palmer, R; Drinan, E; Murphy, T (1994). A previously unknown disease of farmed atlantic salmon: pathology and establishment of bacterial aetiology . Diseases of Aquatic Organisms 19 (1), 7-14 0177-5103,1616-1580 http://hdl.handle.net/10379/9761 https://doi.org/10.13025/24246 doi:10.3354/dao019007 Attribution-NonCommercial-NoDerivs 3.0 Ireland https://creativecommons.org/licenses/by-nc-nd/3.0/ie/ atlantic salmon pathology gram-negative bacterium intracellular agent salar Article 1994 ftnuigalway https://doi.org/10.13025/2424610.3354/dao019007 2024-09-17T14:44:30Z A previously unknown disease of Atlantic salmon Salmo salar occurred on a seawater farm in Ireland, during 1992 and 1993. The gross pathology and the histopathology of the disease are described. A distinctive histological feature of the disease was the presence of intracellular Gram-negative bacteria in several tissues. In particular, the endothelial cells of the kidney glomeruli were enlarged and contained densely packed bacteria within cytoplasmic vacuoles. During later stages of the disease, most tissues showed numerous areas of necrosis surrounded by lymphoid cells. A bacterium was isolated on axenic media, and was demonstrated to be the causative agent by laboratory infectivity trials. The bacterium was approximately 0.4 x 0.6 mum in size in vivo, but also showed filamentous forms (<5 mum) in vitro. In culture it was a slow-growing facultative or aerotolerant anaerobe, requiring serum or blood for growth. It was not possible to characterize the organism by standard biochemical reactions, but additional characterization tests are in progress. Article in Journal/Newspaper Atlantic salmon Salmo salar National University of Ireland (NUI), Galway: ARAN |
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National University of Ireland (NUI), Galway: ARAN |
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ftnuigalway |
language |
unknown |
topic |
atlantic salmon pathology gram-negative bacterium intracellular agent salar |
spellingShingle |
atlantic salmon pathology gram-negative bacterium intracellular agent salar Palmer, R Drinan, E Murphy, T A previously unknown disease of farmed atlantic salmon: pathology and establishment of bacterial aetiology |
topic_facet |
atlantic salmon pathology gram-negative bacterium intracellular agent salar |
description |
A previously unknown disease of Atlantic salmon Salmo salar occurred on a seawater farm in Ireland, during 1992 and 1993. The gross pathology and the histopathology of the disease are described. A distinctive histological feature of the disease was the presence of intracellular Gram-negative bacteria in several tissues. In particular, the endothelial cells of the kidney glomeruli were enlarged and contained densely packed bacteria within cytoplasmic vacuoles. During later stages of the disease, most tissues showed numerous areas of necrosis surrounded by lymphoid cells. A bacterium was isolated on axenic media, and was demonstrated to be the causative agent by laboratory infectivity trials. The bacterium was approximately 0.4 x 0.6 mum in size in vivo, but also showed filamentous forms (<5 mum) in vitro. In culture it was a slow-growing facultative or aerotolerant anaerobe, requiring serum or blood for growth. It was not possible to characterize the organism by standard biochemical reactions, but additional characterization tests are in progress. |
format |
Article in Journal/Newspaper |
author |
Palmer, R Drinan, E Murphy, T |
author_facet |
Palmer, R Drinan, E Murphy, T |
author_sort |
Palmer, R |
title |
A previously unknown disease of farmed atlantic salmon: pathology and establishment of bacterial aetiology |
title_short |
A previously unknown disease of farmed atlantic salmon: pathology and establishment of bacterial aetiology |
title_full |
A previously unknown disease of farmed atlantic salmon: pathology and establishment of bacterial aetiology |
title_fullStr |
A previously unknown disease of farmed atlantic salmon: pathology and establishment of bacterial aetiology |
title_full_unstemmed |
A previously unknown disease of farmed atlantic salmon: pathology and establishment of bacterial aetiology |
title_sort |
previously unknown disease of farmed atlantic salmon: pathology and establishment of bacterial aetiology |
publisher |
Inter-Research Science Center |
publishDate |
1994 |
url |
http://hdl.handle.net/10379/9761 https://doi.org/10.13025/24246 https://doi.org/10.3354/dao019007 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_relation |
Diseases of Aquatic Organisms Palmer, R; Drinan, E; Murphy, T (1994). A previously unknown disease of farmed atlantic salmon: pathology and establishment of bacterial aetiology . Diseases of Aquatic Organisms 19 (1), 7-14 0177-5103,1616-1580 http://hdl.handle.net/10379/9761 https://doi.org/10.13025/24246 doi:10.3354/dao019007 |
op_rights |
Attribution-NonCommercial-NoDerivs 3.0 Ireland https://creativecommons.org/licenses/by-nc-nd/3.0/ie/ |
op_doi |
https://doi.org/10.13025/2424610.3354/dao019007 |
_version_ |
1811636522058776576 |