Bacterial Kidney Disease in Feral Populations of Brook Trout ( Salvelinus fontinalis), Brown Trout ( Salmo trutta), and Rainbow Trout ( Salmo gairdneri)
Incidence and effects of bacterial kidney disease (BKD) were determined in wild, naturally reproducing populations of brook trout (Salvelinus fontinalis), brown trout (Salmo trutta), and rainbow trout (Salmo gairdneri) in a small lake and stream system in southeastern Wyoming, USA where BKD epizooti...
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Canadian Science Publishing
1979
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Online Access: | http://dx.doi.org/10.1139/f79-196 http://www.nrcresearchpress.com/doi/pdf/10.1139/f79-196 |
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crcansciencepubl:10.1139/f79-196 2024-09-15T18:01:48+00:00 Bacterial Kidney Disease in Feral Populations of Brook Trout ( Salvelinus fontinalis), Brown Trout ( Salmo trutta), and Rainbow Trout ( Salmo gairdneri) Mitchum, Douglas L. Sherman, Loris E. Baxter, George T. 1979 http://dx.doi.org/10.1139/f79-196 http://www.nrcresearchpress.com/doi/pdf/10.1139/f79-196 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Journal of the Fisheries Research Board of Canada volume 36, issue 11, page 1370-1376 ISSN 0015-296X journal-article 1979 crcansciencepubl https://doi.org/10.1139/f79-196 2024-07-18T04:13:38Z Incidence and effects of bacterial kidney disease (BKD) were determined in wild, naturally reproducing populations of brook trout (Salvelinus fontinalis), brown trout (Salmo trutta), and rainbow trout (Salmo gairdneri) in a small lake and stream system in southeastern Wyoming, USA where BKD epizootics have been observed since 1972. During 1976, dead fish were collected at three upstream stations, and 60 live fish were collected from each of 11 stations. All fish were necropsied, and virological, bacteriological, and parasitological examinations were conducted by standard methods. An indirect fluorescent antibody technique was used to detect the BKD organism in cultures and kidney tissue smears. Bacterial kidney disease was diagnosed in 100% of the dead brook trout collected. Incidence among live fish ranged from 83% at an upstream station to only 3% at the most downstream location, and was highest in brook trout and lowest in rainbow trout. Two longnose suckers (Catostomus catostomus), the only non-salmonids collected, were found negative for BKD. Clinical signs of infection and the most severe infections were found only in brook trout. Five age-classes of feral brook trout were involved in the epizootics. Since other known pathogens were essentially absent, it is believed that all deaths were due to BKD. Relationships between species susceptibility to BKD, age-classes, water chemistry and water temperatures, and certain ecological conditions are discussed. Key words: bacterial kidney disease, feral trout, epizootics, brook trout, brown trout, rainbow trout Article in Journal/Newspaper Catostomus catostomus Canadian Science Publishing Journal of the Fisheries Research Board of Canada 36 11 1370 1376 |
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Open Polar |
collection |
Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
Incidence and effects of bacterial kidney disease (BKD) were determined in wild, naturally reproducing populations of brook trout (Salvelinus fontinalis), brown trout (Salmo trutta), and rainbow trout (Salmo gairdneri) in a small lake and stream system in southeastern Wyoming, USA where BKD epizootics have been observed since 1972. During 1976, dead fish were collected at three upstream stations, and 60 live fish were collected from each of 11 stations. All fish were necropsied, and virological, bacteriological, and parasitological examinations were conducted by standard methods. An indirect fluorescent antibody technique was used to detect the BKD organism in cultures and kidney tissue smears. Bacterial kidney disease was diagnosed in 100% of the dead brook trout collected. Incidence among live fish ranged from 83% at an upstream station to only 3% at the most downstream location, and was highest in brook trout and lowest in rainbow trout. Two longnose suckers (Catostomus catostomus), the only non-salmonids collected, were found negative for BKD. Clinical signs of infection and the most severe infections were found only in brook trout. Five age-classes of feral brook trout were involved in the epizootics. Since other known pathogens were essentially absent, it is believed that all deaths were due to BKD. Relationships between species susceptibility to BKD, age-classes, water chemistry and water temperatures, and certain ecological conditions are discussed. Key words: bacterial kidney disease, feral trout, epizootics, brook trout, brown trout, rainbow trout |
format |
Article in Journal/Newspaper |
author |
Mitchum, Douglas L. Sherman, Loris E. Baxter, George T. |
spellingShingle |
Mitchum, Douglas L. Sherman, Loris E. Baxter, George T. Bacterial Kidney Disease in Feral Populations of Brook Trout ( Salvelinus fontinalis), Brown Trout ( Salmo trutta), and Rainbow Trout ( Salmo gairdneri) |
author_facet |
Mitchum, Douglas L. Sherman, Loris E. Baxter, George T. |
author_sort |
Mitchum, Douglas L. |
title |
Bacterial Kidney Disease in Feral Populations of Brook Trout ( Salvelinus fontinalis), Brown Trout ( Salmo trutta), and Rainbow Trout ( Salmo gairdneri) |
title_short |
Bacterial Kidney Disease in Feral Populations of Brook Trout ( Salvelinus fontinalis), Brown Trout ( Salmo trutta), and Rainbow Trout ( Salmo gairdneri) |
title_full |
Bacterial Kidney Disease in Feral Populations of Brook Trout ( Salvelinus fontinalis), Brown Trout ( Salmo trutta), and Rainbow Trout ( Salmo gairdneri) |
title_fullStr |
Bacterial Kidney Disease in Feral Populations of Brook Trout ( Salvelinus fontinalis), Brown Trout ( Salmo trutta), and Rainbow Trout ( Salmo gairdneri) |
title_full_unstemmed |
Bacterial Kidney Disease in Feral Populations of Brook Trout ( Salvelinus fontinalis), Brown Trout ( Salmo trutta), and Rainbow Trout ( Salmo gairdneri) |
title_sort |
bacterial kidney disease in feral populations of brook trout ( salvelinus fontinalis), brown trout ( salmo trutta), and rainbow trout ( salmo gairdneri) |
publisher |
Canadian Science Publishing |
publishDate |
1979 |
url |
http://dx.doi.org/10.1139/f79-196 http://www.nrcresearchpress.com/doi/pdf/10.1139/f79-196 |
genre |
Catostomus catostomus |
genre_facet |
Catostomus catostomus |
op_source |
Journal of the Fisheries Research Board of Canada volume 36, issue 11, page 1370-1376 ISSN 0015-296X |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f79-196 |
container_title |
Journal of the Fisheries Research Board of Canada |
container_volume |
36 |
container_issue |
11 |
container_start_page |
1370 |
op_container_end_page |
1376 |
_version_ |
1810438871775707136 |