Publications
USGS divers in the Elwha River
WFRC zebrafish laboratory
Processing a Lost River sucker
Below is a list of available WFRC peer reviewed and published science.
Filter Total Items: 2562
White-spot disease of salmon fry White-spot disease of salmon fry
White-spot disease, sometimes referred to as coagulated-yolk disease, has been associated with excessive mortalities occurring among the fry and early fingerling stages of the fall chinook salmon (Oncorhynchus tshawytacha) at the U.S. Fish-Cultural Stations at Carson, Cook, Underwood, and Willard, Washington. This disease of eggs and fry should not be confused with the "white-spot"...
Authors
J. J. Mazuranich, W. E. Nielson
Fish mycobacteriosis (Tuberculosis) Fish mycobacteriosis (Tuberculosis)
The etiologic agent for the bacterial disease, "fish tuberculosis" (more correctly "mycobacteriosis"), was first observed in carp in 189& from a pond in France. Subsequently similar agents have been isolated from or observed in fish in fresh water, salt water, and brackish water, in fish in aquaria, hatcheries, and natural habitat~ (wild populations of fish). The disease has been...
Authors
T. J. Parisot, J.W. Wood
Dry diets for Chinook salmon Dry diets for Chinook salmon
The purpose of this paper is to present the results obtained with seven different diets used as starting diets of chinook salmon fry.
Authors
Walter E. Neilson, J. J. Mazuranich
Etiology of sockeye salmon 'virus' disease Etiology of sockeye salmon 'virus' disease
Violent epizootics among hatchery reared sockeye salmon fingerlings (Oncorhynchus nerka) caused by a filterable agent have occurred. In 1954, one source of this infectious, filterable agent was found to be adult sockeye viscera used in the diet for the fingerlings. The results of observations on an epizootic in 1958 indicate that the infection may be transmitted to fingerlings from a...
Authors
Raymond W. Guenther, S.W. Watson, R.R. Rucker, A. J. Ross
Vibrio infections among marine and fresh-water fish Vibrio infections among marine and fresh-water fish
In 1951. B. J. Earpio found a vibrio infection among salmon fingerlings being reared in saltwater at the Deception Pass Biological Station of the Washington State Department of Fisheries. The disease waa characterized by erythema at the base of fins and on the sides of the fish, necrotic areas in the Inusculature, inflammation of the intestinal tract, and general septicernia. The disease
Authors
Robert R. Rucker
Mycobacterial infections in adult salmon and steelhead trout returning to the Columbia River Basin and other areas in 1957 Mycobacterial infections in adult salmon and steelhead trout returning to the Columbia River Basin and other areas in 1957
The degree of incidence of acid -fast bacillus infections in adult salmonid fishes was determined. The disease was shown to be widely distributed in the area examined. It is believed the primary source of infection is derived from the hatchery practice of feeding infected salmon products to juvenile fish. One group of marked adults that had been hatchery reared for 370 days showed a 62...
Studies on digenetic trematodes of the genera Gymnophallus and Parvatrema Studies on digenetic trematodes of the genera Gymnophallus and Parvatrema
No abstract available.
Authors
H. W. Stunkard, Joseph R. Uzmann
Rapid counting of nematoda in salmon by peptic digestion Rapid counting of nematoda in salmon by peptic digestion
The nematode parasite Anisakis sp. can be recovered, relatively unaltered, from chum salmon musculature by high temperature (52°+2°C.) peptic digestion of the flesh. The procedure, which is presented in detail, appears to be more thorough in isolating the parasite than dissection of the flesh and manual isolation of the worms. In addition, the procedure is rapid, comparatively simple...
Authors
Joseph A. Stern, Diptiman Chakravarti, Joseph R. Uzmann, M. N. Hesselholt
Parasitological methods for identification and abundance estimates of downstream migrant races of salmon Parasitological methods for identification and abundance estimates of downstream migrant races of salmon
No abstract available
Authors
J. R. Uzmann, R.A. Lander, M. N. Hesselholt
Record of the fungus Ichthyosporidium Caullery and Mesnil, 1905, in Idaho Record of the fungus Ichthyosporidium Caullery and Mesnil, 1905, in Idaho
No abstract available.
Authors
A. John Ross, Thomas J. Parisot