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: 2517
Performance of antimycin in high-gradient streams Performance of antimycin in high-gradient streams
A variety of low- to high-gradient streams in Colorado and Montana were treated with the fish toxicant antimycin (Fintrol) to evaluate its efficacy in relation to stream gradient. In general, a dose of 8 μg/L delivered for 8 h effectively killed brook trout Salvelinus fontinalisand rainbow trout Oncorhynchus mykiss over an elevation drop of 60–75 m where pH was low (≤7.0) and water...
Authors
K.F. Tiffan, Eric P. Bergersen
Gas bubble trauma monitoring and research of juvenile salmnonids. Annual report 1996 Gas bubble trauma monitoring and research of juvenile salmnonids. Annual report 1996
no abstract available
Authors
A.G. Maule, J.W. Beeman, K.M. Hans, M.G. Mesa, P.V. Haner, J.J. Warren
Criteria for reducing predation by northern squawfish near juvenile salmonid bypass outfalls at Columbia River dams Criteria for reducing predation by northern squawfish near juvenile salmonid bypass outfalls at Columbia River dams
Predation by northern squawfish (Ptychocheilus oregonensis) has been documented to be significant on emigrating juvenile salmonids near juvenile bypass outfalls at hydroelectric dams on the Columbia River. Criteria for siting juvenile fish bypass outfalls to reduce predation were developed using locational data from radio-tagged northern squawfish in The Dalles Dam trailrace, Columbia...
Authors
Rip S. Shively, Thomas P. Poe, Mindi B. Sheer, Peters
First record predation on white sturgeon eggs by sympatric fishes First record predation on white sturgeon eggs by sympatric fishes
We report the occurrence of white sturgeon Acipenser transmontanus eggs in guts of four species of fish from the Columbia River. Three of the species—northern squawfish Ptychocheilus oregonensis, largescale sucker Catostomus macrocheilus, and prickly sentpin Cottus asper—are native to the river and one, common carp Cvprinus carpio, is exotic.
Authors
Allen I. Miller, L.G. Beckman
Feeding response by northern squawfish to a hatchery release of juvenile salmonids in the Clearwater River, Idaho Feeding response by northern squawfish to a hatchery release of juvenile salmonids in the Clearwater River, Idaho
We collected gut contents from northern squawfish Ptychocheilus oregonensis captured in the Clearwater River, Idaho, 0–6 km from its confluence with the Snake River, following the release of 1.1 million yearling chinook salmon Oncorhynchus tshawytscha from the Dworshak National Fish Hatchery. Before the hatchery release, northern squawfish gut contents (by weight) in the study area were...
Authors
R.S. Shively, T.P. Poe, S.T. Sauter
Immune and endocrine responses of adult spring Chinook salmon during freshwater migration and sexual maturation Immune and endocrine responses of adult spring Chinook salmon during freshwater migration and sexual maturation
The immune –endocrine responses in spring chinook salmon (Oncorhynchus tshawytscha) were examined during their freshwater migration and final maturation. In 1990, migrating fish had high plasma cortisol titres (means 200 ng ml−1) and generated relatively few antibody-producing cells (APC) from peripheral blood leukocytes (PBL) (100 –200 per culture). After three weeks acclimation in...
Authors
A.G. Maule, R. M. Schrock, C. Slater, M.S. Fitzpatrick, C. B. Schreck
Osmoregulatory performance and markings of subyearling Chinook salmon at McNary Dam to estimate adult contribution Osmoregulatory performance and markings of subyearling Chinook salmon at McNary Dam to estimate adult contribution
No abstract available
Authors
K.F. Tiffan, R.D. Garland, P.G. Wagner
Effects of mitigative measures on productivity of white sturgeon populations in the Columbia River downstream from McNary Dam and status and habitat requirements of white sturgeon populations in the Columbia and Snake rivers upstream from McNary Dam. Repo Effects of mitigative measures on productivity of white sturgeon populations in the Columbia River downstream from McNary Dam and status and habitat requirements of white sturgeon populations in the Columbia and Snake rivers upstream from McNary Dam. Repo
Not abstract available
Authors
M.J. Parsley, T.D. Counihan, Allen I. Miller, M.N. Morgan, D. Gallion
Effects of selenium dietary enhancement on hatchery-reared coho salmon, Oncorhynchus kisutch (Walbaum), when compared with wild coho: hepatic enzymes and seawater adaptation evaluated. Effects of selenium dietary enhancement on hatchery-reared coho salmon, Oncorhynchus kisutch (Walbaum), when compared with wild coho: hepatic enzymes and seawater adaptation evaluated.
Hatchery-reared coho salmon, Oncorhynchus kisutch (Walbaum), were fed elevated levels of selenium (as Na2SeO3) to raise eviscerated body burdens to the level measured in wild counterparts. The goal was to find a dietary concentration that would achieve the desired effect without causing damage to growth and normal development. To measure some indices of health, the detoxifying enzymes...
Authors
S.P. Felton, M.L. Landolt, R. Grace, A.N. Palmisano
Incidence of Renibacterium salmoninarum infections in juvenile hatchery spring chinook salmon in the Columbia and Snake Rivers Incidence of Renibacterium salmoninarum infections in juvenile hatchery spring chinook salmon in the Columbia and Snake Rivers
From 1988 through 1992, we assessed the prevalence (frequency of occurrence) and severity (degree of infection) of Renibacterium salmoninarum (RS) among fish in marked groups of Columbia River basin and Snake River basin hatchery spring chinook salmon Oncorhynchus tshawytscha before release and during their seaward migration. During the study, prevalence of RS infection decreased (from...
Authors
A.G. Maule, D.W. Rondorf, J.W. Beeman, P.V. Haner
Vacuum hand pump apparatus for collecting water samples from a horizontal intragravel pipe Vacuum hand pump apparatus for collecting water samples from a horizontal intragravel pipe
We describe a lightweight, portable vacuum hand pump apparatus for use in collecting water samples from horizontal intragravel pipe samplers buried in the stream bottom. The apparatus is easily fabricated from relatively inexpensive materials available at many laboratory supply houses.
Authors
Michael K. Saiki, Barbara A. Martin
Effects of supplementation with hatchery fish on carrying capacity and productivity of naturally spawning populations of steelhead Effects of supplementation with hatchery fish on carrying capacity and productivity of naturally spawning populations of steelhead
No abstract available
Authors
R.R. Reisenbichler