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: 2488
White sturgeon spawning areas in the lower Snake River
We documented 17 white sturgeon Acipenser transmontanus spawning locations in the Snake River from the mouth to Lower Granite Dam (river km 0 to 173). Spawning locations were determined by the collection of fertilized eggs on artificial substrates or in plankton nets. We collected 245 eggs at seven locations in McNary Reservoir, 22 eggs at three locations in Ice Harbor Reservoir, 30 eggs from two
Authors
M.J. Parsley, K.M. Kappenman
Techniques used to monitor radio-tagged juvenile salmonids at Columbia and Snake River Dams
No abstract available
Authors
N.S. Adams, R.S. Shively, C. Grant
Fungi from geothermal soils in Yellowstone National Park
Geothermal soils near Amphitheater Springs in Yellowstone National Park were characterized by high temperatures (up to 70°C), high heavy metal content, low pH values (down to pH 2.7), sparse vegetation, and limited organic carbon. From these soils we cultured 16 fungal species. Two of these species were thermophilic, and six were thermotolerant. We cultured only three of these species from nearby
Authors
R. S. Redman, A. Litvintseva, K.B. Sheehan, J.M. Henson, R. J. Rodriguez
Shedding of Renibacterium salmoninarum by infected chinook salmon Oncorhynchus tschawytscha
Laboratory studies of the transmission and pathogenesis of Renibacterium salmoninarum may describe more accurately what is occurring in the natural environment if test fish are infected by waterborne R. salmoninarum shed from infected fish. To quantify bacterial shedding by chinook salmon Oncorhynchus tschawytscha at 13??C in freshwater, groups of fish were injected intraperitoneally with R. salmo
Authors
C.L. McKibben, R.J. Pascho
Gas bubble disease monitoring and research of juvenile salmonids, 1998
No abstract available.
Authors
J.W. Beeman, T.C. Robinson, P.V. Haner, S. P. VanderKooi, A.G. Maule
Stress-induced immune-endocrine interaction
No abstract available
Authors
A.G. Maule, S. P. VanderKooi
Growth and mortality of age-0 northern squawfish, Ptychocheilus oregonensis, rearing in shoreline habitats of the Columbia River Reservoir
We investigated growth and mortality of age-0 northern squawfish during early rearing in shallow shoreline habitats. Larvae and juveniles (n=22914) were collected by weekly seining at three sample sites in the upper John Day Reservoir, Columbia River, during June through early September 1994–1996. Using a length-based ageing method, it was estimated that the exponential growth rate (G) for a commo
Authors
C.A. Barfoot, D.M. Gadomski, R.H. Wertheimer
Characterization of branch complexity by fractal analyses and detect plant functional adaptations
The comparison between complexity in the sense of space occupancy (box-counting fractal dimension Dc and information dimension DI ) and heterogeneity in the sense of space distribution (average evenness index and evenness variation coefficient JCV) were investigated in mathematical fractal objects and natural branch ¯ J structures. In general, increased fractal dimension was paired with low hetero
Authors
C.L. Alados, J. Escos, J.M. Emlen, D.C. Freeman
Cloning, in Vitro expression, and novel phylogenetic classification of a channel catfish estrogen receptor
We obtained two channel catfish estrogen receptor (ccER) cDNA from liver of female fish using RT–PCR. The two fragments were identical in sequence except that the smaller one had an out-of-frame deletion in the E domain, suggesting the existence of ccER splice variants. The larger fragment was used to screen a cDNA library from liver of a prepubescent female. A cDNA was obtained that encoded a 581
Authors
Z. Xia, R. Patino, W.L. Gale, A.G. Maule, L.D. Densmore
Migrational characteristics of radio-tagged juvenile salmonids during operation of a surface collection and bypass system
No abstract available.
Authors
N.S. Adams, D.W. Rondorf, S.D. Evans, J.E. Kelly, R.W. Perry, J.M. Plumb, D.R. Kennedy
Masculinization of Nile tilapia (Oreochromis niloticus) by immersion in androgens
The use of all-male populations increases the efficiency and feasibility of tilapia aquaculture. The objective of this study was to determine the efficacy of a short-term immersion procedure for masculinizing Nile tilapia (Oreochromis niloticus). Two synthetic androgens were evaluated: 17α-methyldihydrotestosterone (MDHT) and 17α-methyltestosterone (MT). Exposure (3 h) on 10 and again on 13 days p
Authors
W.L. Gale, M.S. Fitzpatrick, M. Lucero, W.M. Contreras-Sanchez, C. B. Schreck
Fish assemblages and habitat relationships in a small northern Great Plains stream
We examined fish populations and environmental characteristics of pool and riffle habitats of Little Beaver Creek, Montana, a small northern Great Plains stream. We collected 4,980 fishes representing 20 species in eight families. The most abundant and species-rich family was Cyprinidae. Nearly 88% (4,369) of all fishes were collected in pools. Pools also supported greater numbers ofspecies (x = 6
Authors
C.A. Barfoot, R.G. White