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: 2525
John Day Dam Phase I Drawdown: Composition of resident fish communities in near-shore habitats of John Day Reservoir, and potential for changes in predator predator-prey relationships John Day Dam Phase I Drawdown: Composition of resident fish communities in near-shore habitats of John Day Reservoir, and potential for changes in predator predator-prey relationships
Abstract not available
Authors
C.A. Barfoot, J.H. Petersen, M. Sheer, T.P. Poe
Influence of externally attached trasmitters on the swimming performance of juvenile white sturgeon Influence of externally attached trasmitters on the swimming performance of juvenile white sturgeon
We measured the critical swimming speed of juvenile white sturgeons Acipenser transmontanus equipped with externally attached dummy ultrasonic transmitters and of untagged control fish in the laboratory. White sturgeons ranging from 31.9 to 37.0 cm fork length were subjected to one of three treatments: Control (handled but not tagged), tag attached below the dorsal fin, and tag attached...
Authors
T.D. Counihan, C.N. Frost
Assessment and analysis of smolt condition in the Columbia River Basin, volume 1: Evaluation of the effect of a modified feeding strategy on growth and smoltification of summer steelhead (Oncorhynchus mykiss) at Dworshak National Fish Hatchery Assessment and analysis of smolt condition in the Columbia River Basin, volume 1: Evaluation of the effect of a modified feeding strategy on growth and smoltification of summer steelhead (Oncorhynchus mykiss) at Dworshak National Fish Hatchery
Abstract not available
Authors
R. M. Schrock, R.E. Reagan, P.A. Petrusso, J. Coyle
Predicting the effects of dam breaching in the lower Snake River on predators of juvenile salmon Predicting the effects of dam breaching in the lower Snake River on predators of juvenile salmon
Abstract not available
Authors
J. Petersen, C. Barfoot, S. Sauter, D. Gadomski, P. Connolly
Conversion of the pathogenic fungus Colletotrichum magna to a nonpathogenic, endophytic mutualist by gene disruption Conversion of the pathogenic fungus Colletotrichum magna to a nonpathogenic, endophytic mutualist by gene disruption
Hygromycin-resistant transformants of the cucurbit pathogen Colletotrichum magna (teleomorph: Glomerella magna) were generated by restriction enzyme-mediated integration (REMI) transformation. A rapid pathogenicity assay involving watermelon (Citrullus lanatus) seedlings was developed and 14,400 REMI transformants were screened and assessed for their ability to cause disease, colonize...
Authors
R. S. Redman, J. C. Ranson, R. J. Rodriguez
Some preliminary findings on the nutritional status of the Hawaiian spiny lobster (Panulirus marginatus) Some preliminary findings on the nutritional status of the Hawaiian spiny lobster (Panulirus marginatus)
Data on the nutritional status of spiny lobster (Panulirus marginatus) were collected on the commercial trapping grounds of Necker Bank, Northwestern Hawaiian Islands, in the summers of 1991, 1994, and 1995. Glycogen levels measured in abdominal tissue of intermolt males were used as an index of nutritional health of the field population. The range of glycogen sampled from wild lobster...
Authors
F.A. Parrish, T. L. Martinelli-Liedtke
Evaluation of the new Bonneville Dam second powerhouse juvenile bypass system, 1999 Evaluation of the new Bonneville Dam second powerhouse juvenile bypass system, 1999
Abstract not available
Authors
G.S. Holmberg, R.E. Wardell, M.G. Mesa, A. Powers, M. Wilcoxin, N.S. Adams, D.W. Rondorf
Feasibility of extracting survival information from radio-telemetry studies at the John Day Dam Feasibility of extracting survival information from radio-telemetry studies at the John Day Dam
Abstract not available
Authors
T.D. Counihan, J.H. Petersen, N.S. Adams, R.S. Shively, H.C. Hansel
Movements and passage routes of radio-tagged juvenile Chinook salmon and steelhead in the forebay of Lower Granite Dam as determined from fixed-site receiver stations Movements and passage routes of radio-tagged juvenile Chinook salmon and steelhead in the forebay of Lower Granite Dam as determined from fixed-site receiver stations
Abstract not available
Authors
S.D. Evans, N.S. Adams, R.W. Perry, J.M. Plumb, M.S. Novick
Growth and mortality of age-0 northern squawfish, Ptychocheilus oregonensis, rearing in shoreline habitats of the Columbia River Reservoir 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)...
Authors
C.A. Barfoot, D.M. Gadomski, R.H. Wertheimer
Masculinization of Nile tilapia (Oreochromis niloticus) by immersion in androgens 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...
Authors
W.L. Gale, M.S. Fitzpatrick, M. Lucero, W.M. Contreras-Sanchez, C. B. Schreck
Antigenic and functional characterization of p57 produced by Renibacterium salmoninarum Antigenic and functional characterization of p57 produced by Renibacterium salmoninarum
Renibacterium salmoninarum, the causative agent of bacterial kidney disease, produces large quantities of a 57-58 kDa protein (p57) during growth in broth culture and during infection of salmonid fish. Biological activities of secreted p57 include agglutination of salrnonid leucocytes and rabbit erythrocytes. We define the location of epitopes on p57 recognized by agglutination-blocking...
Authors
G. Weins, M.S. Chien, J. R. Winton, S.L. Kaatari