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: 2479
Preliminary evaluation of predation control measures for major predators in the Columbia River
No abstract available
Authors
P.T. Lofy, S.D. Duke, M.J. Parsley, M.G. Mesa, G.M. Sonneville, L.A. Prendergast
Use of Columbia River reservoirs for rearing by juvenile fall Chinook salmon and some management implications
No abstract available
Authors
G.A. Gray, D.W. Rondorf
Feeding activity, rate of consumption, daily ration, and prey selection of major predators in the John Day Pool
No abstract available
Authors
G.A. Gray, D.E. Palmer, B.L. Hilton, P.J. Connolly, H.C. Hansel, J.M. Beyer, P.T. Lofty, G.M. Sonnevil
Waste water management techniques at the United States national fish hatcheries
No abstract available
Authors
A.C. Fox
Feeding activity, rate of consumption, daily ration and prey selection of major predators in the John Day Pool
No abstract available
Authors
G.A. Gray, D.E. Palmer, B.L. Hilton, P.J. Connolly, H.C. Hansel, J.M. Beyer, G.M. Sonnevil
Some potentials and limits of the leucocrit test as a fish health assessment method
The sensitivity of the leucocrit as a stress tolerance and fish health assessment method was evaluated by subjecting juvenile coho salmon, Oncorhynchus kisutch, or steelhead trout, Salmo gairdneri, to standardized crowding, handling, temperature and disease challenges. The leucocrit was a sensitive indicator of the physiological stress resulting from crowding at population densities of 0·2–0·4 kg
Authors
Gary Wedemeyer, R. W. Gould, W. T. Yasutake
Serological comparison of selected isolates of Aeromonas salmonicida ssp. Salmonicida
Eight isolates of Acronionus salmonicida ssp. salmonicida were collected during furunculosis epizootics in North American Pacific coast states and provinces. Both virulent and avirulent forms of each isolate, confirmed by challenge and electron microscopy, were examined. Serological comparisons by cross-absorption agglutination tests revealed no serological differences between isolates. Using the
Authors
G.B. Hahnel, R. W. Gould, E.S. Boatman
An analysis of factors affecting the production of coho salmon in the Columbia River
No abstract available
Authors
P. M. Washington
Detection of infectious haematopoietic necrosis virus in river water and demonstration of waterborne transmission
In a study of the possible role of waterborne infectious haematopoietic necrosis virus in transmission of the disease among spawning sockeye salmon, Oncorhynchus nerka (Walbaum), both infection rates and virus titres were higher in fish held at high density in a side channel than in fish in the adjacent river. Virus was never isolated from river water, but was found in water from the side channel
Authors
D. Mulcahy, R.J. Pascho, C.K. Jenes
Mortality due to infectious hematopoietic necrosis of sockeye salmon (Oncorhynchus nerka) fry in streamside egg incubation boxes
Infectious hematopoietic necrosis virus caused mortality of sockeye salmon (Oncorhynchus nerka) in streamside egg incubation boxes. Virus was not detectable in eggs or alevins; its first isolation coincided with the appearance of dead fish in a trap on the outflow from the box. Mortality due to the virus did not occur in every egg box studied. However, when fry from the boxes were held in the labo
Authors
D. Mulcahy, R.J. Pascho, C.K. Jenes
Tolerance to gas supersaturation in freshwater and seawater by steelhead trout (Salmo gairdneri)
The euryhaline status of steelhead trout, Salmo gairdneri, smolts was challenged in sea water for 2 weeks after which half of the total fish population was returned to fresh water. Acclimation continued and created two test populations in 29%osea water and fresh water. Subsequently these fish were exposed in fresh water or sea water to approximately equal hyperbaric dissolved total gas pressures (
Authors
G.R. Bouck, R.E. King
Titre distribution patterns of infectious haematopoietic necrosis virus in ovarian fluids of hatchery and feral salmon populations
Infectious haematopoietic mecrosis virus (IHNV) is enzootic in virtually all populations of sockeye salmon, Oncorhynchus nerka (Walbaum), and in populations of chinook salmon, O. tshawytscha (Walbaum), of the Sacramento River drainage in California. This disease is an obstacle in hatcheries using brood stocks from these populations. However, naturally spawning sockeye salmon are highly successful
Authors
D. Mulcahy, R.J. Pascho, C.K. Jenes