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: 2525
Feeding of predaceous fishes on out-migrating juvenile-salmonids in John Day Reservoir, Columbia River Feeding of predaceous fishes on out-migrating juvenile-salmonids in John Day Reservoir, Columbia River
Diets of northern squawfish Ptychocheilus oregonensis, smallmouth bass Micropterus dolomieu, walleye Stizostedion vitreum, and channel catfish Ictalurus punctatus from John Day Reservoir were examined to determine the extent of predation on juvenile salmonids during seaward migrations of the salmonids during April–August 1983–1986. Juvenile Pacific salmon Oncorhynchus spp. and steelhead...
Authors
Thomas P. Poe, Hal C. Hansel, S. Vigg, D.E. Palmer, L.A. Prendergast
The application of current techniques in molecular biology for detection and control of infectious diseases in salmonid aquaculture The application of current techniques in molecular biology for detection and control of infectious diseases in salmonid aquaculture
No abstract available
Authors
Adam G. Fox, C.K. Arakawa, J. R. Winton
Inactivation of infectious hematopoietic necrosis virus by low levels of iodine Inactivation of infectious hematopoietic necrosis virus by low levels of iodine
The fish rhabdovirus infectious hematopoietic necrosis virus (IHNV) was rapidly inactivated by extremely low concentrations of iodine in water. A 99.9% virus reduction was obtained in 7.5 s when virus (105PFU/ml) and iodine (0.1 mg/liter, final concentration) were combined in distilled-deionized or hatchery water. Iodine efficacy decreased at pHs greater than 7.5 or when proteinaceous...
Authors
William N. Batts, Marsha L. Landolt, James R. Winton
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
Allen I. Miller, P.J. Anders, M.J. Parsley, C.R. Sprague, J.J. Warren, L.G. Beckman
A sigmoid model to predict gastric evacuation rates of smallmouth bass Micropterus dolomieui fed juvenile salmon A sigmoid model to predict gastric evacuation rates of smallmouth bass Micropterus dolomieui fed juvenile salmon
Laboratory experiments were conducted to examine the effects of water temperature, predator size, prey size, and prey number on gastric evacuation of smallmouth bass (Micropterus dolomieui) fed juvenile salmon. The smallmouth bass were allowed to feed voluntarily after 24–48 h of starvation and stomachs were pumped at intervals of 1–4 h until 90% of the stomach contents were evacuated...
Authors
Jean Beyer Rogers, Craig C. Burley
Life history and management of four endangered lacustrine suckers Life history and management of four endangered lacustrine suckers
No abstract available
Authors
G.G. Scoppettone, G. Vinyard
Smolt quality assessment of spring Chinook salmon Smolt quality assessment of spring Chinook salmon
No abstract available
Authors
W.S. Zaugg, W.W. Dickhoff, B.R. Beckman, C.V.W. Mahnken, G.A. Winans, T.W. Newcomb, C.B. Schreck, A.N. Palmisano, R. M. Schrock, Gary Wedemeyer, R.D. Ewing, C.W. Hopley
Polymerase chain reaction (PCR) amplification of a nucleoprotein gene sequence of infectious hematopoietic necrosis virus Polymerase chain reaction (PCR) amplification of a nucleoprotein gene sequence of infectious hematopoietic necrosis virus
The polymerase chain reaction [PCR) was used to amplify a portion of the nucleoprotein [NI gene of infectious hematopoietic necrosis virus (IHNV). Using a published sequence for the Round Butte isolate of IHNV, a pair of PCR pnmers was synthesized that spanned a 252 nucleotide region of the N gene from residue 319 to residue 570 of the open reading frame. This region included a 30...
Authors
C.K. Arakawa, R.E. Deering, K.H. Higman, K.H. Oshima, P.J. O’Hara, J. R. Winton
Pen rearing and imprinting of fall Chinook salmon. Annual report 1989 Pen rearing and imprinting of fall Chinook salmon. Annual report 1989
The goal of this project is to compare net-pen rearing methods to traditional hatchery methods of rearing upriver bright fall chinook salmon (Oncorhvnchus tshawvtscha). Fish were reared at several densities in net pens at three Columbia River backwater sites during 1984-1987, and in a barrier net at one site during 1984-1986; methods included both fed and unfed treatments. The purpose of...
Authors
J.W. Beeman, J.F. Novotny
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
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