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
Thermotolerance generated by plant/fungal symbiosis
No abstract available.
Authors
Regina S. Redman, Kathy B. Sheehan, Richard G. Stout, Russell J. Rodriguez, Joan M. Henson
Novel molecular markers differentiate Oncorhynchus mykiss (rainbow trout and steelhead) and the O. clarki (cutthroat trout) subspecies
A suite of 26 PCR-based markers was developed that differentiates rainbow (Oncorhynchus mykiss) and coastal cutthroat trout (O. clarki clarki). The markers also differentiated rainbow from other cutthroat trout subspecies (O. clarki), and several of the markers differentiated between cutthroat trout subspecies. This system has numerous positive attributes, including: nonlethal sampling, high speci
Authors
C.O. Ostberg, R. J. Rodriguez
Factors influencing the distribution of Myxobolus cerebralis, the causative agent of whirling disease, in the Cache la Poudre River, Colorado
Oligochaetes, triactinomyxons (TAMs), and age-0 trout were sampled in the upper Cache la Poudre River, Colorado, to determine the distribution of Myxobolus cerebralis during 1997 and 1998. Densities of the intermediate host, the oligochaete Tubifex tubifex, were 3.5 orders of magnitude higher in the M. cerebralis-infected Poudre Rearing Unit (PRU) trout rearing ponds than at any of the river sampl
Authors
M. Brady Allen, Eric P. Bergersen
Incidence of Ichthyophonus hoferi in Puget Sound fishes and its increase with age of Pacific herring
A recent decrease in the mean age of adult Pacific herring Clupea pallasi in Puget Sound was associated with a high prevalence of Ichthyophonus hoferi, a protistan parasite that can be highly pathogenic to Pacific herring. In Puget Sound, high intensities of I. hoferiinfection may be maintained in older cohorts of Pacific herring because the prevalence ofI. hoferi increased with age from 12% among
Authors
P.K. Hershberger, K. Stick, B. Bui, C. Carroll, B. Fall, C. Mork, J.A. Perry, E. Sweeney, J. Wittouck, J. Winton, R. Kocan
Developmental instability and fitness in Periploca laevigata experiencing grazing disturbance
We investigated the sensitivity of developmental instability measurements (leaf fluctuating asymmetry, floral radial asymmetry, and shoot translational asymmetry) to a long‐standing natural stress (grazing) in a palatable tannin‐producing shrub (Periploca laevigata Aiton). We also assessed the relationship between these measures of developmental instability and fitness components (growth and flora
Authors
C.L. Alados, M.L. Giner, L. Dehesa, J. Escos, F. Barroso, J.M. Emlen, D.C. Freeman
Status of the preston white river springfish (Crenichthys baileyi albivallis)
We determined the distribution and estimated population number of Preston White River springfish (Crenichthys baileyi albivallis) in summer 1998 and winter 1999. The total population was
Authors
G.G. Scoppettone, P.H. Rissler
Resident fish assemblages in shallow shorelines of a Columbia River impoundment
During May-September 1995, we replicated an earlier (1984-85) study of fishes in shoreline habitats of the John Day Reservoir, Columbia River, to investigate fish assemblage structure at several spatial and temporal scales. A total of 37,400 resident fishes representing 24 taxa was collected in 359 beach seine hauls. Fish catch composition during 1984 and 1985 was very similar, but was greatly dif
Authors
C.A. Barfoot, D.M. Gadomski, J.H. Petersen
Effects of rearing temperature on immune functions in sockeye salmon (Oncorhynchus nerka)
To determine if the defences of sockeye salmon (Oncorhynchus nerka) raised in captivity are affected by the rearing temperature or their life-cycle stage, various indices of the humoral and cellular immune functions were measured in fish reared at either 8 or 12??C for their entire life-cycle. Measures of humoral immunity included the commonly used haematological parameters, as well as measurement
Authors
S.W. Alcorn, A.L. Murray, R.J. Pascho
Characterization and isolation of an extracellular serine protease from the tomato pathogen Colletotrichum coccodes, and it's role in pathogenicity
Extracellular enzymes play an important role in the pathogenicity and virulence of phytopathogenic fungi. Several isolates of Colletotrichum coccodes, causal agent of anthracnose on tomato, were screened to determine the relationship between protease activity and virulence. A direct relationship was observed between extracellular protease activity and the induction of disease symptoms of fruit and
Authors
R. S. Redman, R. J. Rodriguez
The identification of parasites in fish tissue sections
The identification of parasites in tissue sections is often difficult and fresh specimens are always required for accurate taxonomical classification. However, histological sections are in many cases the only material available and the identification of parasites in sections the subject of the recent histopathology workshop held in Dublin. The group reviewed the characteristics of representative p
Authors
B. Nowak, D.G. Elliott, D.W. Bruno
Antibody responses by chinook salmon (Oncorhynchus tshawytscha) and rainbow trout (Oncorhynchus mykiss) to various protein antigens
[No abstract available]
Authors
S.W. Alcorn, R.J. Pascho
Fasting modifies Aroclor 1254 impact on plasma cortisol, glucose and lactate responses to a handling disturbance in Arctic charr
Integrated effects of polychlorinated biphenyl (PCB) and nutritional status on responses to handling disturbance were investigated in the Arctic charr (Salvelinus alpinus). The fish were orally contaminated with Aroclor 1254 and held either with or without food for 5 months before they were subjected to a 10-min handling disturbance. Food-deprived fish were given 0, 1, 10 or 100 mg PCB kg−1 and th
Authors
E.H. Jorgensen, M.M. Vijayan, N. Aluru, A.G. Maule