Bacteria Associated with Fin Rot Disease in Hatchery-Reared Atlantic Salmon ( Salmo salar )
Fin rot is a progressive necrotic disease of many fish species. Several bacteria have been implicated in the etiology of the disease. To determine the bacteria associated with the disease in Atlantic salmon, fish were randomly sampled at weekly intervals at two hatcheries from August 1977 to April 1...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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1980
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crcansciencepubl:10.1139/f80-195 2023-12-17T10:27:17+01:00 Bacteria Associated with Fin Rot Disease in Hatchery-Reared Atlantic Salmon ( Salmo salar ) Schneider, Robert Nicholson, Bruce L. 1980 http://dx.doi.org/10.1139/f80-195 http://www.nrcresearchpress.com/doi/pdf/10.1139/f80-195 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 37, issue 10, page 1505-1513 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 1980 crcansciencepubl https://doi.org/10.1139/f80-195 2023-11-19T13:38:55Z Fin rot is a progressive necrotic disease of many fish species. Several bacteria have been implicated in the etiology of the disease. To determine the bacteria associated with the disease in Atlantic salmon, fish were randomly sampled at weekly intervals at two hatcheries from August 1977 to April 1978. The degree of fin rot was scored numerically by a standard method and bacteria were enumerated by plate count on several media. Representative colonies were isolated for identification. The extent and severity of fin rot increased as the water temperature decreased. The average total colony counts from healthy fins of fish at both hatcheries were low (2.5 × 10 3 /g) and included a variety of bacteria. The average total colony counts from fins with severe rot were high (2.0 × 10 5 /g) with one or more Flexibacter species and Aeromonas salmonicida accounting for 50–90% of the total. Statistical analysis showed a highly significant positive correlation of fin rot with Aeromonas salmonicida colony counts at hatchery I, whereas the disease was correlated only with Flexibacter colony counts at hatchery II. High colony counts of both Flexibacter sp. and A. salmonicida were correlated with low water temperatures at the respective hatcheries. Electron microscopical examination of fins with advanced lesions revealed evidence of tissue necrosis surrounding bacteria. Thus, while no relationship was observed between bacteria and the onset of fin rot disease, evidence was obtained implicating at least two species of bacteria as probable etiological agents of the progressive disease.Key words: bacteria, fin rot disease, Atlantic salmon Article in Journal/Newspaper Atlantic salmon Salmo salar Canadian Science Publishing (via Crossref) Canadian Journal of Fisheries and Aquatic Sciences 37 10 1505 1513 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Schneider, Robert Nicholson, Bruce L. Bacteria Associated with Fin Rot Disease in Hatchery-Reared Atlantic Salmon ( Salmo salar ) |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Fin rot is a progressive necrotic disease of many fish species. Several bacteria have been implicated in the etiology of the disease. To determine the bacteria associated with the disease in Atlantic salmon, fish were randomly sampled at weekly intervals at two hatcheries from August 1977 to April 1978. The degree of fin rot was scored numerically by a standard method and bacteria were enumerated by plate count on several media. Representative colonies were isolated for identification. The extent and severity of fin rot increased as the water temperature decreased. The average total colony counts from healthy fins of fish at both hatcheries were low (2.5 × 10 3 /g) and included a variety of bacteria. The average total colony counts from fins with severe rot were high (2.0 × 10 5 /g) with one or more Flexibacter species and Aeromonas salmonicida accounting for 50–90% of the total. Statistical analysis showed a highly significant positive correlation of fin rot with Aeromonas salmonicida colony counts at hatchery I, whereas the disease was correlated only with Flexibacter colony counts at hatchery II. High colony counts of both Flexibacter sp. and A. salmonicida were correlated with low water temperatures at the respective hatcheries. Electron microscopical examination of fins with advanced lesions revealed evidence of tissue necrosis surrounding bacteria. Thus, while no relationship was observed between bacteria and the onset of fin rot disease, evidence was obtained implicating at least two species of bacteria as probable etiological agents of the progressive disease.Key words: bacteria, fin rot disease, Atlantic salmon |
format |
Article in Journal/Newspaper |
author |
Schneider, Robert Nicholson, Bruce L. |
author_facet |
Schneider, Robert Nicholson, Bruce L. |
author_sort |
Schneider, Robert |
title |
Bacteria Associated with Fin Rot Disease in Hatchery-Reared Atlantic Salmon ( Salmo salar ) |
title_short |
Bacteria Associated with Fin Rot Disease in Hatchery-Reared Atlantic Salmon ( Salmo salar ) |
title_full |
Bacteria Associated with Fin Rot Disease in Hatchery-Reared Atlantic Salmon ( Salmo salar ) |
title_fullStr |
Bacteria Associated with Fin Rot Disease in Hatchery-Reared Atlantic Salmon ( Salmo salar ) |
title_full_unstemmed |
Bacteria Associated with Fin Rot Disease in Hatchery-Reared Atlantic Salmon ( Salmo salar ) |
title_sort |
bacteria associated with fin rot disease in hatchery-reared atlantic salmon ( salmo salar ) |
publisher |
Canadian Science Publishing |
publishDate |
1980 |
url |
http://dx.doi.org/10.1139/f80-195 http://www.nrcresearchpress.com/doi/pdf/10.1139/f80-195 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 37, issue 10, page 1505-1513 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f80-195 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
37 |
container_issue |
10 |
container_start_page |
1505 |
op_container_end_page |
1513 |
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1785579082537238528 |