Infectivity of a rickettsia isolated from coho salmon Oncorhynchus kisutch
Two species of salmonids were tested for their susceptibility to infection by a rickettsia isolated in cell culture from diseased coho salmon Oncorhynchus kisutch in Chile. Mortality approached 100% in coho and Atlantic salmon Salmo salar injected with 10-fold dilutions of cell culture medium contai...
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ftoregonstate:ir.library.oregonstate.edu:rf55z8256 2024-04-14T08:09:06+00:00 Infectivity of a rickettsia isolated from coho salmon Oncorhynchus kisutch Garces, L. H. Larenas, J. J. Smith, P. A. Sandino, S. Lannan, C. N. Fryer, J. L. Hatfield Marine Science Center https://ir.library.oregonstate.edu/concern/articles/rf55z8256 English [eng] eng unknown Inter-Research https://ir.library.oregonstate.edu/concern/articles/rf55z8256 Copyright Not Evaluated Article ftoregonstate 2024-03-21T15:49:52Z Two species of salmonids were tested for their susceptibility to infection by a rickettsia isolated in cell culture from diseased coho salmon Oncorhynchus kisutch in Chile. Mortality approached 100% in coho and Atlantic salmon Salmo salar injected with 10-fold dilutions of cell culture medium containing the rickettsia. Typical disease signs were present in the coho salmon but were not observed in inoculated Atlantic salmon. However, the rickettsia was recovered in pure culture from moribund fish in each of the injected groups of either species. The rickettsia was thereby demonstrated to be pathogenic and the cause of the ongoing epizootic affecting salmonids cultured in Chile. Horizontal transmission was not demonstrated in a group of uninoculated coho salmon held in the same tank with experimentally infected fish. Keywords: Salmo salar, Rickettsia, Oncorhynchus kisutch, pathogens Keywords: Salmo salar, Rickettsia, Oncorhynchus kisutch, pathogens Article in Journal/Newspaper Atlantic salmon Salmo salar ScholarsArchive@OSU (Oregon State University) |
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ScholarsArchive@OSU (Oregon State University) |
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ftoregonstate |
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English unknown |
description |
Two species of salmonids were tested for their susceptibility to infection by a rickettsia isolated in cell culture from diseased coho salmon Oncorhynchus kisutch in Chile. Mortality approached 100% in coho and Atlantic salmon Salmo salar injected with 10-fold dilutions of cell culture medium containing the rickettsia. Typical disease signs were present in the coho salmon but were not observed in inoculated Atlantic salmon. However, the rickettsia was recovered in pure culture from moribund fish in each of the injected groups of either species. The rickettsia was thereby demonstrated to be pathogenic and the cause of the ongoing epizootic affecting salmonids cultured in Chile. Horizontal transmission was not demonstrated in a group of uninoculated coho salmon held in the same tank with experimentally infected fish. Keywords: Salmo salar, Rickettsia, Oncorhynchus kisutch, pathogens Keywords: Salmo salar, Rickettsia, Oncorhynchus kisutch, pathogens |
author2 |
Hatfield Marine Science Center |
format |
Article in Journal/Newspaper |
author |
Garces, L. H. Larenas, J. J. Smith, P. A. Sandino, S. Lannan, C. N. Fryer, J. L. |
spellingShingle |
Garces, L. H. Larenas, J. J. Smith, P. A. Sandino, S. Lannan, C. N. Fryer, J. L. Infectivity of a rickettsia isolated from coho salmon Oncorhynchus kisutch |
author_facet |
Garces, L. H. Larenas, J. J. Smith, P. A. Sandino, S. Lannan, C. N. Fryer, J. L. |
author_sort |
Garces, L. H. |
title |
Infectivity of a rickettsia isolated from coho salmon Oncorhynchus kisutch |
title_short |
Infectivity of a rickettsia isolated from coho salmon Oncorhynchus kisutch |
title_full |
Infectivity of a rickettsia isolated from coho salmon Oncorhynchus kisutch |
title_fullStr |
Infectivity of a rickettsia isolated from coho salmon Oncorhynchus kisutch |
title_full_unstemmed |
Infectivity of a rickettsia isolated from coho salmon Oncorhynchus kisutch |
title_sort |
infectivity of a rickettsia isolated from coho salmon oncorhynchus kisutch |
publisher |
Inter-Research |
url |
https://ir.library.oregonstate.edu/concern/articles/rf55z8256 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_relation |
https://ir.library.oregonstate.edu/concern/articles/rf55z8256 |
op_rights |
Copyright Not Evaluated |
_version_ |
1796306561698627584 |