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: 2488
Predation of Karluk River sockeye salmon by coho salmon and char
The number of sockeye salmon, Oncorhynchus nerka, in Alaska's Karluk River (Fig. 1) declined from millions to thousands during the early part of the present century. Rounsefell (1958) discussed alternative explanations for the decline including a general loss offertility ofthe system as the number of salmon carcasses declined, competition, overfishing, subtle changes in climate, and predation; he
Authors
J.D. McIntyre, R.R. Reisenbichler, J.M. Emlen, R.L. Wilmot, J.E. Finn
Neutralizing monoclonal antibodies recognize antigenic variants among isolates of infectious hematopoietic necrosis virus
eutralizing monoclonal antibodies were developed against strains of infectious hematopoietic necrosis virus (IHNV) from steelhead trout Salmo gairdneri in the Deschutes River of Oregon, chinook salmon Oncorhynchus tshawytscha in the Sacramento River of California, and rainbow trout Salmo gairdneri reared in the Hagerman Valley of Idaho, USA. These antibodies were tested for neutralization of 12 IH
Authors
J. R. Winton, C.N. Arakawa, C.N. Lannan, J. L. Fryer
Vaccination against infectious hematopoietic necrosis
No abstract available.
Authors
J.C. Leong, J. L. Fryer, J. R. Winton
Potential hazard for spread of infectious disease by transplantation of fish
No abstract available.
Authors
J. S. Rohovec, J. R. Winton, J. L. Fryer
Selection to increase survival of smolts in four successive broods of coho salmon
Survival from smolt to adult for full and half-sib families of coho salmon Oncorhynchus kisutch was used to identify families with the highest survival rates at Big Creek Salmon Hatchery in Oregon. Adult fish from families with high survival were bred selectively for four consecutive generations in an attempt to increase smolt survival. A significant improvement in survival in the select line comp
Authors
J.D. McIntyre, A.R. Hemmingsen, R.C. Simon
Effects of variation in flow on distribution of northern squawfish (Ptychocheilus oregonensis) below McNary Dam on the Columbia River
The movements of 23 northern Squawfish Ptychocheilus oregonensis were monitored by radiotelemetry below a Columbia River hydroelectric dam during the out-migration of juvenile anadromous salmonids in 1984 and 1985. The work was done as part of a study to relate predator abundances and distribution to juvenile salmonid mortalities associated with dams. Northern Squawfish remained in protected shore
Authors
M.P. Faler, L.M. Miller, K.I. Welke
Digestive tract evacuation in northern squawfish (Ptychocheilus oregonensis)
Digestive tract evacuation in northern squawfish (Ptychocheilus oregonensis) (170–1900 g) was studied in fish allowed to feed voluntarily on salmon (4–70 g) at three water temperatures (10, 15, and 20 °C). Squawfish were sacrificed at 1- or 2-h intervals until evacuation approximated 90%. Amount of food evacuated for a given time interval increased approximately three times as the temperature was
Authors
J.M. Beyer, G. Lucchetti, G. Gray
Effect of differential gastric evacuation and multispecies prey items on estimates of daily energy intake in juvenile Chinook salmon
The caloric density of stomach contents in juvenile chinook salmon,Oncorhynchus tshawytscha, was not affected by gastric evacuation, suggesting a constant caloric density of stomach contents during evacuation. Differences in the caloric density of prey consumed did affect caloric density of stomach contents over a 24-h period. Consumption of the amphipodCorophium sp. was associated with reduced ca
Authors
A.S. Kolak, D.W. Rondorf
Cranial nodules associated with skull fenestrations in juvenile Atlantic salmon, Salmo salar L.
No abstract available
Authors
M.L. Kent, S.R. Wellings, W. T. Yasutake, R.A. Elston
Comparison of five techniques for the detection of Renibacterium salmoninarum in adult coho salmon.
Samples of kidney, spleen, coelomic fluid, and blood from 56 sexually mature coho salmon Oncorhynchus kisutch were examined for infection by Renibacterium salmoninarum by five methods. The overall prevalence (all sample types combined) of R. salmoninarum in the fish was 100% by the enzyme-linked immunosorbent assay, 86% by the combined results of the direct fluorescent antibody and the direct filt
Authors
R.J. Pascho, D.G. Elliott, R.W. Mallett, D. Mulcahy
Enzyme-linked immunosorbent assay for a soluble antigen of Renibacterium salmoninarum, the causative agent for salmonid bacterial kidney disease
A double-antibody enzyme-linked immunosorbent assay (ELISA) for detection of a soluble fraction of Renibacterium salmoninarum was developed from components extracted from the supernatant of an R. salmoninarum broth culture. The Costar® Serocluster™ EIA microplate gave the highest absorbance and signal-to-noise ratios among seven types tested. Including Tween 80 in the wash buffer resulted in highe
Authors
R.J. Pascho, D. Mulcahy
Safe pre-release disease treatment with formalin for fall chinook salmon smolts
Standard formalin treatment (167 μL/L for 1 h) applied to presmolts and smolts of fall chinook salmon (Oncorhynchus tshawytscha) 80, 62, 52, 38, 24, and 10 d prior to seawater exposure did not affect freshwater growth or survival during a 20-d period in seawater. There was no consistent effect of treatment on gill Na+, K+ -ATPase activity.
Authors
S.D. Smith, R. W. Gould, W.S. Zaugg, L.W. Harrell, C.V.W. Mahnken