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
White sturgeon spawning and rearing habitat in the lower Columbia River White sturgeon spawning and rearing habitat in the lower Columbia River
Estimates of spawning habitat for white sturgeons Acipenser transmontanus in the tailraces of the four dams on the lower 470 km of the Columbia River were obtained by using the Physical Habitat Simulation System of the U.S. Fish and Wildlife Service's Instream Flow Incremental Methodology to identify areas with suitable water depths, water velocities, and substrates. Rearing habitat...
Authors
Michael J. Parsley, Lance G. Beckman
Assessment of smolt condition for travel time analysis. 1991-1992 report Assessment of smolt condition for travel time analysis. 1991-1992 report
No abstract available
Authors
A.G. Maule, J. Beeman, R. M. Schrock, P.V. Haner
Developmental instability as an indicator of natural stress on the Pacific Hake (Merlussius productus) Developmental instability as an indicator of natural stress on the Pacific Hake (Merlussius productus)
Developmental lnstability (DI) has been proposed as an inexpensive, quickly applied, and sensitive indicator of stress that can be utilized in early warning and in monitoring anthropogenic impacts on fish and other animals and plants. A problem arises, however, to the extent that natural stressors confound the effects of human-induced disturbances. Our objective in this work was to...
Authors
C.L. Alados, J. Escos, J.M. Emlen
Effects of multiple acute stressors on the predator avoidance ability and physiology of juvenile Chinook salmon Effects of multiple acute stressors on the predator avoidance ability and physiology of juvenile Chinook salmon
Northern squaw fish Ptychocheilus oregonensis are the predominant predators of juvenile Pacific salmonids Oncorhynchus spp. in the Columbia River, and their predation rates are greatest just below dams. Because juvenile salmonids are commonly subjected to multiple stressors at dams in the course of their seaward migration, high predation rates below dams may be due in part to an increase...
Authors
Matthew G. Mesa
Variation in mitochondrial DNA and allozymes discriminates early and late forms of Chinook salmon Oncorhynchus tshawytscha in the Kenai and Kasilof Rivers, AK Variation in mitochondrial DNA and allozymes discriminates early and late forms of Chinook salmon Oncorhynchus tshawytscha in the Kenai and Kasilof Rivers, AK
Genetic differences between early and late forms of Alaskan chinook salmon (Oncorhynchus tshawytscha) were identified using two genetic approaches: mitochondrial DNA (mtDNA) analysis, and protein electrophoresis. Study populations consisted of early and late runs in each of the Kenai and Kasilof rivers in Alaska, and a population from the Minam River, Oregon. Two segments of mtDNA were...
Authors
Noah S. Adams, William J. Spearman, Carl V. Burger, Kenneth P. Currens, Carl B. Schreck, Hiram W. Li
Association of viral hemorrhagic septicemia virus with epizootic hemorrhages of the skin in Pacific herring Clupea harengus pallasi from Prince William Sound and Kodiak Island, Alaska, USA Association of viral hemorrhagic septicemia virus with epizootic hemorrhages of the skin in Pacific herring Clupea harengus pallasi from Prince William Sound and Kodiak Island, Alaska, USA
Only one-third of the Pacific hernng Clupea harengus pallasi expected to spawn in Prince William Sound (PWS), Alaska, USA, in sprlng 1993 were observed. Of these herring, 15 to 43 '% had external ulcers or subdermal hemorrhages of the skln and fins. A rhabdovirus identified as the North American strain of viral hemorrhagic septicemia virus (VHSV) was isolated from affected herring and 1...
Authors
T.R. Meyers, S. Short, K. Lipson, W.N. Batts, J. R. Winton, J. Wilcock, E. Brown
A microassay for gill sodium, potassium-activated ATPase in juvenile Pacific salmon A microassay for gill sodium, potassium-activated ATPase in juvenile Pacific salmon
A microassay well-plate method is described for determining Na+,K+-ATPase activities of small gill sections from juvenile Pacific salmon Oncorhynchus spp. The method differs from the established macromethod by detecting inorganic phosphate in nanomole rather than micromole concentrations. This permits the use of much smaller tissue samples, which makes it possible to release fish after...
Authors
Robin M. Schrock, John W. Beeman, Dennis W. Rondorf, Philip V. Haner
Movements and distribution of radio-tagged northern squawfish near The Dalles Dam. Annual report 1992 Movements and distribution of radio-tagged northern squawfish near The Dalles Dam. Annual report 1992
No abstract available
Authors
R.S. Shively, S.R. Hirtzel, L.L. Mann, T.L. McGuire, G. Holmberg
Viral hemorrhagic septicemia Viral hemorrhagic septicemia
No abstract available
Authors
P. E. McAllister, W.N. Batts
Biological monitoring of environmental quality: The use of developmental instability Biological monitoring of environmental quality: The use of developmental instability
Distributed robustness is thought to influence the buffering of random phenotypic variation through the scale-free topology of gene regulatory, metabolic, and protein-protein interaction networks. If this hypothesis is true, then the phenotypic response to the perturbation of particular nodes in such a network should be proportional to the number of links those nodes make with...
Authors
D.C. Freeman, J.M. Emlen, J.H. Graham, R. A. Hough, T.A. Bannon
Application of the stage-projection model with density-dependent fecundity to the population dynamics of Spanish ibex Application of the stage-projection model with density-dependent fecundity to the population dynamics of Spanish ibex
A stage-class population model with density-feedback term included was used to identify the most critical parameters determining the population dynamics of female Spanish ibex (Capra pyrenaica) in southern Spain. A population in the Cazorla and Segura mountains is rapidly declining, but the eastern Sierra Nevada population is growing. The stable population density obtained using...
Authors
J. Escos, C.L. Alados, John M. Emlen
Efficacy of electrofishing to assess plasma cortisol concentration in juvenile chinook salmon passing hydroelectric dams on the Columbia River Efficacy of electrofishing to assess plasma cortisol concentration in juvenile chinook salmon passing hydroelectric dams on the Columbia River
We tested the efficacy of using electrofishing to collect juvenile fall chinook salmon Oncorhynchus tshawytschato assess their plasma cortisol concentrations. In laboratory experiments, plasma cortisol titers offish sampled immediately (
Authors
Alec G. Maule, Matthew G. Mesa