This project was initiated in an attempt to control furunculosis
(Aeromonas salmonicida) in a production hatchery rearing coho salmon.
An oral vaccine was prepared and administered to 520,000
juvenile coho salmon (Oncorhynchus kisutch) at the Siletz River Salmon
Hatchery prior to the onset of a predictable naturally occurring
epizootic of...
This project was initiated to determine the incidence, distribution
and species of fish affected by Ceratomyxa shasta in Oregon
waters. Returning adult Pacific salmon and steelhead trout were
chosen for the survey because they were known to be susceptible to
infection. The parasite was also believed to be an important...
The purpose of this project was to study the possibility of controlling
furunculosis in salmonid fish using immunological procedures.
Antiserum with an agglutinating antibody titer of 1:20,480
against Aeromonas salmonicida was produced in a horse. This
hyperimmune serum was used to passively immunize coho salmon,
Oncorhynchus kitsutch, (jacks). However, this...
This investigation was initiated in an attempt to delineate
some factors affecting the adsorption of poliovirus to soil particles
in seawater. The results could have significance in the development
of assay procedures for viral contaminants in natural waters.
A sample of marine sediment, obtained from an estuary near
Purdy, Washington,...
The purpose of this paper was twofold, (1) to determine the
distribution of the infective stage of Ceratomyxa shasta (Noble) in the
Deschutes River basin, and (2) to study the ultrastructure of the spore
stage of the protozoan parasite.
Liveboxes containing juvenile rainbow trout were placed at
specific test points...
After parenteral immunization with Aeromonas salmonicida
cells, the agglutination activity in juvenile coho salmon (Oncorhynchus
kisutch) serum was associated with the macroglobulin serum fraction.
Antibody activity was diminished by 30 minutes exposure to 50 C
but not 45 C. Reduction with 2-mercaptoethanol and alkylation
markedly lowered but did not completely...
The detection and antigenic nature of the causative Corynebacterium
of bacterial kidney disease and chemotherapy of this disease
in juvenile coho salmon (Oncorhynchus kisutch) were examined.
Each of 207 yearling coho salmon collected from a population
undergoing a severe epizootic of bacterial kidney disease were examined
for the presence of...
An oral vaccine was developed for control of vibriosis
in Pacific salmon. The vaccine consists of a lyophilized
sonicate of cells of Vibrio anguillarum, the causative
agent of this disease. The preparation was incorporated
into a ration and fed to salmon in fresh water before the
fish were transported and...
This research was initiated to investigate the effects of various
parameters on the immune response of juvenile coho salmon to Aeromonas
salmonicida. The antibody response and development of protective
immunity in juvenile coho salmon were followed after a single
intraperitoneal injection of formalin killed A. salmonicida cells emulsified
in Freund's...