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: 2528
Simulation estimates of salmonid predation loss to northern squawfish in a Columbia River reservoir. Appendix D-1 Simulation estimates of salmonid predation loss to northern squawfish in a Columbia River reservoir. Appendix D-1
No abstract available
Authors
L.J. Bledsoe, S. Vigg, J.H. Petersen
Management implications of a model of predation by a resident fish on juvenile salmonids migrating through a Columbia River reservoir Management implications of a model of predation by a resident fish on juvenile salmonids migrating through a Columbia River reservoir
We constructed a model ofpredation by northern squawfish Ptychocheilus oregonensis on juvenile salmonids migrating through John Day Reservoir. The model predicts salmonid survival as a function of number and distribution of northern squawfish, number and timing of juvenile salmonids entering the reservoir, salmonid residence time, water temperature, and flow. The model predicted survival...
Authors
Raymond C. Beamesderfer, Bruce E. Rieman, Lewis J. Bledsoe, Steven Vigg
Density-dependence at sea for coho salmon (Oncorhynchus kisutch) Density-dependence at sea for coho salmon (Oncorhynchus kisutch)
The success of expanded salmon hatchery programs will depend strongly on the degree of density-induced diminishing returns per smolt released. Several authors have addressed the question of density-dependent mortality at sea in coho salmon (Oncorhynchus kisutch), but have come to conflicting conclusions. We believe there are compelling reasons to reinvestigate the data, and have done so...
Authors
J.M. Emlen, R.R. Reisenbichler, A.M. McGie, T.E. Nickelson
Status and habitat requirements of white sturgeon populations in the Columbia River downstream from McNary Dam Status and habitat requirements of white sturgeon populations in the Columbia River downstream from McNary Dam
No abstract available
Authors
S.D. Duke, T.J. Underwood, G.M. Asbridge, R.G. Griswold, M.J. Parsley, L.G. Beckman
Multiplication of infectious hematopoietic necrosis virus in rainbow trout following immersion infection: whole-body assay and immunohistochemistry Multiplication of infectious hematopoietic necrosis virus in rainbow trout following immersion infection: whole-body assay and immunohistochemistry
The sites of replication of infectious hematopoietic necrosis virus (IHNV) in infected tissues were detected in fingerling rainbow trout Oncorhynchus mykiss by in situ histologic techniques following immersion infection. Virus antigens in tissues were detected by a neutralizing mouse monoclonal antibody and a one-step anti-mouse biotin-streptavidin conjugated to horseradish peroxidase...
Authors
T. Yamamoto, W.N. Batts, C.K. Arakawa, J. R. Winton
Status and life history of Pahranagat River Fishes Status and life history of Pahranagat River Fishes
No abstract available
Authors
P. Tuttle, G.G. Scoppettone, D. Withers
Feeding ecology of subyearling Chinook salmon in riverine and reservoir habitats of the Columbia River Feeding ecology of subyearling Chinook salmon in riverine and reservoir habitats of the Columbia River
In the Columbia River, we found the diet of subyearling chinook salmon Oncorhynchus tshawytscha to be predominately caddisflies (Trichoptera; 64% by weight) in riverine nursery habitats, but mostly Daphnia spp. and terrestrial insects in reservoir habitats. A preference analysis indicated that subyearlings did not eat food items in proportion to food availability; they preferred small...
Authors
Dennis W. Rondorf, Gerard A. Gray, Robert B. Fairley
Isolation of infectious hematopoietic necrosis virus from a leech (Piscicola salmositica) and a copepod (Salmincola sp.), ectoparasites of sockeye salmon Oncorhynchus nerka Isolation of infectious hematopoietic necrosis virus from a leech (Piscicola salmositica) and a copepod (Salmincola sp.), ectoparasites of sockeye salmon Oncorhynchus nerka
Infectious haematopoietic necrosis (IHN) virus was isolated from freshwater leeches Piscicola salmositica and copepods Salmincola sp. removed from the gills of spawning sockeye salmon, Oncorhynchus nerka. This is the first report of the isolation of IHN virus from an animal other than salmonid fishes. High levels of IHN virus were also found in leeches taken from the bottom gravel of the...
Authors
Daniel M. Mulcahy, D. Klaybor, W.N. Batts
Stress and acclimation Stress and acclimation
No abstract available
Authors
Gary Wedemeyer, B.B. Barton, D.J. McLeay
Changes in numbers of leukocytes in immune organs of juvenile coho salmon after acute stress or cortisol treatment Changes in numbers of leukocytes in immune organs of juvenile coho salmon after acute stress or cortisol treatment
We examined the effects of acute stress and cortisol treatment on the number of leukocytes (normalized for fish body weight) in the blood, thymus, spleen, and anterior kidney of juvenile coho salmon Oncorhynchus kisutch. In acutely stressed or cortisol-fed fish, the numbers of leukocytes increased significantly in the thymus and anterior kidney, and decreased significantly in blood and...
Authors
Alec G. Maule, Carl B. Schreck
Use of an artificial substrate to collect white sturgeon eggs Use of an artificial substrate to collect white sturgeon eggs
No abstract available
Authors
G.T. McCabe, L.G. Beckman
System-wide significance of predation on juvenile salmonids in Columbia and Snake River reservoirs System-wide significance of predation on juvenile salmonids in Columbia and Snake River reservoirs
No abstract available
Authors
J.H. Petersen, D.B. Jepsen, R.D. Nelle, R.S. Shively, R.A. Tabor, T.P. Poe