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: 2551
Predation of Karluk River sockeye salmon by coho salmon and char 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...
Authors
J.D. McIntyre, R.R. Reisenbichler, J.M. Emlen, R.L. Wilmot, J.E. Finn
Effect of water quality on survival of Lahontan cutthroat trout eggs in the Truckee River, west-central Nevada and eastern California Effect of water quality on survival of Lahontan cutthroat trout eggs in the Truckee River, west-central Nevada and eastern California
The U.S. Fish and Wildlife Service has an ongoing program to assess the feasibility of reestablishing naturally spawning populations of Lahontan cutthroat trout in the Truckee River-Pyramid Lake system in Nevada. Previous in situ egg-survival studies have documented a 100 percent mortality of cutthroat trout eggs artificially planted in potential spawning gravels in the Truckee River...
Authors
Ray J. Hoffman, Gary G. Scoppettone
Minimum tailwater flows in relation to habitat suitability and sport-fish harvest Minimum tailwater flows in relation to habitat suitability and sport-fish harvest
The instream flow needs of four sport fishes (rainbow trout Salmo gairdneri, channel catfish Ictalurus punctatus, smallmouth bass Micropterus dolomieui, and white crappie Pomoxis annularis) were evaluated in the tailwater below Green River Lake, Kentucky. The Newcombe method, a simple procedure developed in British Columbia that is based on the distribution of water depths and velocities...
Authors
K.E. Jacobs, W.D. Swink, J.F. Novotny
Tolerance of juvenile fall Chinook salmon to selenium exposure from water and the food chain: impacts on smoltification and early marine survival Tolerance of juvenile fall Chinook salmon to selenium exposure from water and the food chain: impacts on smoltification and early marine survival
No abstract available
Authors
A.N. Palmisano
Visual observations of historical lake trout spawning grounds in western Lake Huron Visual observations of historical lake trout spawning grounds in western Lake Huron
Direct underwater video observations were made of the bottom substrates at 12 spawning grounds formerly used by lake trout Salvelinus namaycush in western Lake Huron to evaluate their present suitability for successful reproduction by lake trout. Nine locations examined north of Saginaw Bay in the northwestern end of the lake are thought to provide the best spawning habitat. The...
Authors
Robert T. Nester, Thomas P. Poe
Cranial nodules associated with skull fenestrations in juvenile Atlantic salmon, Salmo salar L. 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
Infectious hematopoietic necrosis virus detected by separation and incubation of cells from salmonid cavity fluid. Infectious hematopoietic necrosis virus detected by separation and incubation of cells from salmonid cavity fluid.
Infectious hematopoietic necrosis (IHN) virus is usually detected by inoculating susceptible cell cultures with cavity ("ovarian") fluid (CF) from spawning females. We identified additional adult carriers of virus in spawning populations of steelhead trout (Salmo gairdneri) and sockeye salmon (Oncorhynchus nerka) by collecting nonerythrocytic cells from CF samples by low-speed...
Authors
D. Mulcahy, W.N. Batts
Trends in spawning populations of Pacific anadromous salmonids Trends in spawning populations of Pacific anadromous salmonids
Annual escapement records for 1968-1984 for five species of Pacific salmon-chinook (Oncorhynchus tshawytscha), coho (O. kisutch), sockeye (O. nerka), pink (O. gorbuscha), and chum (O. keta)—and steelhead (Salmo gairdneri) were obtained from published and unpublished sources and organized in a computer database. More than 25,500 escapement records were obtained for more than 1,100...
Authors
G.W. Konkel, J.D. McIntyre
Testing of male sockeye salmon (Oncorhynchus nerka) and steelhead trout (Salmo gairdneri) for infectious hematopoietic necrosis virus Testing of male sockeye salmon (Oncorhynchus nerka) and steelhead trout (Salmo gairdneri) for infectious hematopoietic necrosis virus
Infectious hematopoietic necrosis (IHN) virus has been isolated only rarely from whole milt samples of male sockeye salmon (Oncorhynchus nerka). In 3 yr of testing, virus incidences in males ranged from 0 to 13% when milt was sampled but were 60–100% with spleen or kidney. When IHN virus was isolated from sockeye salmon milt at titers less than 3.00 log10 plaque-forming units (pfu)/mL...
Authors
D. Mulcahy, R.J. Pascho, W.N. Batts
Life history and ecology requirements of the Moapa dace (Moapa coracea) Life history and ecology requirements of the Moapa dace (Moapa coracea)
No abstract available
Authors
G.G. Scoppettone
Effects of dietary selenium on smolting in Chinook salmon Effects of dietary selenium on smolting in Chinook salmon
No abstract available
Authors
A.N. Palmisano