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: 2489
Upstream migration of Pacific lampreys in the John Day River, Oregon: Behavior, timing, and habitat use
Adult Pacific lamprey migration and habitat preferences for over-winter holding and spawning, and larval rearing in tributaries to the Columbia River are not well understood. The John Day River is one such tributary where larval and adult stages of this species have been documented, and its free-flowing character provided the opportunity to study migration of Pacific lampreys unimpeded by passage
Authors
T. Craig Robinson, J.M. Bayer
Abnormalities in larvae from the once-largest Pacific herring population in Washington State result primarily from factors independent of spawning location
Among larvae from populations of Pacific herring Clupea pallasii in Washington State those from Cherry Point have consistently demonstrated abnormalities indicative of distress, including low weights and lengths at hatch, increased prevalences of skeletal abnormalities, and shorter survival times in food deprivation studies. The biomass of adult, prespawn Pacific herring at Cherry Point declined f
Authors
P.K. Hershberger, N.E. Elder, J. Wittouck, K. Stick, R. M. Kocan
Aroclor 1254 exposure reduces disease resistance and innate immune responses in fasted arctic charr
To examine the immunological impacts of polychlorinated biphenyls (PCBs) in an environmentally relevant way, we orally contaminated Arctic charr (Salvelinus alpinus) with Aroclor 1254. After contamination, fish were either fed (0 and 100 mg Aroclor 1254 kg-1 fish wt) or fasted (0, 1, 10, and 100 mg kg-1) to mimic cycles of feeding-fasting experienced by Arctic animals. After four months, PCB conce
Authors
A.G. Maule, E.H. Jorgensen, M.M. Vijayan, J.-E.A. Killie
Evaluation of a prototype surface flow bypass for juvenile salmon and steelhead at the powerhouse of Lower Granite Dam, Snake River, Washington, 1996-2000
A surface flow bypass takes advantage of the natural surface orientation of most juvenile salmon Oncorhynchus spp. and steelhead O. mykiss by providing a route in the upper water column that downstream migrant fishes can use to pass a hydroelectric dam safely. A prototype structure, called the surface bypass and collector (SBC), was retrofitted on the powerhouse of Lower Granite Dam and was evalua
Authors
G. E. Johnson, S.M. Anglea, N.S. Adams, T.O. Wik
Combined use of the ASK and SHK-1 cell lines to enhance the detection of infectious salmon anemia virus
Infectious salmon anemia (ISA) is a severe disease primarily affecting commercially farmed Atlantic salmon (Salmo salar) in seawater. The disease has been reported in portions of Canada, the United Kingdom, the Faroe Islands, and the United States. Infectious salmon anemia virus (ISAV), the causative agent of ISA, has also been isolated from several asymptomatic marine and salmonid fish species. D
Authors
J.B. Rolland, D. Bouchard, J. Coll, J. R. Winton
Problems with sampling desert tortoises: A simulation analysis based on field data
The desert tortoise (Gopherus agassizii) was listed as a U.S. threatened species in 1990 based largely on population declines inferred from mark-recapture surveys of 2.59-km2 (1-mi2) plots. Since then, several census methods have been proposed and tested, but all methods still pose logistical or statistical difficulties. We conducted computer simulations using actual tortoise location data from 2
Authors
J.E. Freilich, R.J. Camp, J.J. Duda, A.E. Karl
Two alternative juvenile life history types for fall Chinook salmon in the Snake River basin
Fall Chinook salmon Oncorhynchus tshawytscha in the Snake River basin were listed under the Endangered Species Act in 1992. At the time of listing, it was assumed that fall Chinook salmon juveniles in the Snake River basin adhered strictly to an ocean-type life history characterized by saltwater entry at age 0 and first-year wintering in the ocean. Research showed, however, that some fall Chinook
Authors
W.P. Connor, J.G. Sneva, K.F. Tiffan, R.K. Steinhorst, D. Ross
Survival and migration behavior of juvenile salmonids at McNary Dam, 2004, Final report of research
During 2004, the USGS Columbia River Research Laboratory conducted a study at McNary Dam using radio telemetry to estimate passage and survival parameters of juvenile salmonids. Our primary objective was to estimate these parameters under ambient environmental and operational conditions, and thus project-wide treatments were not implemented. The primary dam operation consisted of “biop” spill, whe
Authors
Russell W. Perry, Amy C. Braatz, Scott D. Fielding, Joel N. Lucchesi, John M. Plumb, Noah S. Adams, Dennis W. Rondorf
Performance of juvenile steelhead trout (Oncorhynchus mykiss) produced from untreated and cryopreserved milt
Despite the expanding use of milt cryopreservation in aquaculture, the performance of fish produced from this technique has not been fully explored beyond initial rearing stages. We compared the performance of juvenile steelhead Oncorhynchus mykiss produced from untreated (UM) and cryopreserved milt (CM) and reared for 4–9 months. For the 1996 brood, CM alevins were heavier (∼ 1.7%, P < 0.01) than
Authors
Michael C. Hayes, Stephen P. Rubin, Jay E. Hensleigh, Reginald R. Reisenbichler, Lisa A. Wetzel
Distribution, migration behavior, habitat use, and species interactions of fall-released juvenile hatchery spring Chinook salmon on the Deschutes River, Oregon, 2002, Annual report 2002
In a review of National Fish Hatcheries (NFH), the U.S. Fish and Wildlife Service (USFWS) identified the need to assess the fate of hatchery-reared fish and their potential effect on the aquatic community (USFWS 1998). Additionally, in the Columbia River Biological Opinion, the National Marine Fisheries Service (NMFS) recommended monitoring and evaluating ecological interactions between hatchery a
Authors
Rachel E. Reagan, Patrick J. Connolly, Noah S. Adams, Matthew G. Mesa, Dennis W. Rondorf
Assessment of smolt condition: Biological and environmental interactions -- The impact of prey and predators on juvenile salmonids
The Bonneville Power Administration (BPA) has funded the Assessment of Smolt Condition project since 1987. During that time the project changed frequently to meet the information needs of fish managers by conducting studies throughout the Columbia River basin. Past research has examined the influence of smolt physiological development and health on migration rate; differences in development and mi
Authors
Sally T. Sauter, Robin M. Schrock, James H. Petersen, Alec G. Maule
Photosynthesis and fluctuating asymmetry as indicators of plant response to soil disturbance in the Fall-Line Sandhills of Georgia: a case study using Rhus copallinum and Ipomoea pandurata
We examined net photosynthesis, transpiration, stomatal conductance, and leaf fluctuating asymmetry on two species (Rhus copallinum and Ipomoea pandurata) as indicators of stress at nine sites across a gradient of soil disturbance at Fort Benning, Georgia. There were three sites for each of three disturbance levels. Physical habitat disturbance was caused by activities associated with infantry tra
Authors
D. Carl Freeman, Michelle L. Brown, Jeffrey J. Duda, John H. Graham, John M. Emlen, Anthony J. Krzysik, Harold E. Balbach, David A. Kovacic, John C. Zak