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
Behavior of juvenile salmonids at Cowlitz Falls Dam, Washington. Preliminary data summary report for 1998 Behavior of juvenile salmonids at Cowlitz Falls Dam, Washington. Preliminary data summary report for 1998
Abstract not available
Authors
N.S. Adams, J.M. Plumb, D.W. Rondorf
Effects of surgically and gastrically implanted radio transmitters on swimming performance and predator avoidance of juvenile chinook salmon (Oncorhynchus tshawytscha) Effects of surgically and gastrically implanted radio transmitters on swimming performance and predator avoidance of juvenile chinook salmon (Oncorhynchus tshawytscha)
Radiotelemetry data are often used to make inferences about an entire study population; therefore, the transmitter attachment method should be the one that least affects the study animal. Juvenile chinook salmon (Oncorhynchus tshawytscha) 120 mm FL, fish with gastric implants swam as well as controls 1 day but not 19-23 days after tagging. In contrast, fish with surgical implants swam as...
Authors
N.S. Adams, D.W. Rondorf, S.D. Evans, J.E. Kelly, R.W. Perry
Comparison of the membrane-filtration fluorescent antibody test, the enzyme-linked immunosorbent assay, and the polymerase chain reaction to detect Renibacterium salmoninarum in salmon ovarian fluid Comparison of the membrane-filtration fluorescent antibody test, the enzyme-linked immunosorbent assay, and the polymerase chain reaction to detect Renibacterium salmoninarum in salmon ovarian fluid
Ovarian fluid samples from naturally infected chinook salmon (Oncorhynchus tshawytscha) were examined for the presence of Renibacterium salmoninarum by the membrane-filtration fluorescent antibody test (MF-FAT), an antigen capture enzyme-linked immunosorbent assay (ELISA), and a nested polymerase chain reaction (PCR). On the basis of the MF-FAT, 64% (66/103) samples contained detectable...
Authors
Ronald J. Pascho, Dorothy M. Chase, Constance L. McKibben
Evaluation of a new miniature pressure-sensitive radio transmitter Evaluation of a new miniature pressure-sensitive radio transmitter
A miniature pressure-sensitive radio transmitter (tag) was evaluated and field tested as a tool for determining the depths of juvenile salmonids. The tag had an effective radiated power of −19.7 decibels (1 mW reference), dimensions of 23 mm × 7 mm, and a weight of 2.2 g in air. The pulse rate of the tag increased with pressure, resulting in an expected tag life of approximately 11 d at...
Authors
J.W. Beeman, P.V. Haner, A.G. Maule
Instability of development and fractal architecture in dryland plants as an index of grazing pressure Instability of development and fractal architecture in dryland plants as an index of grazing pressure
Developmental instability has been used to monitor the well-being of natural populations exposed to physical, chemical and biological stressors. Here, we use developmental instability to assess the impact of grazing on Chrysothamnus greenii and Seriphidium novumshrubs, and Oryzopsis hymenoidesgrass, common in the arid intermountain west of the U.S.A. Statistical noise in allometric...
Authors
C.L. Alados, J.M. Emlen, B. Wachocki, D.C. Freeman
The status of Moapa coriacea and Gila seminuda and status information on other fishes of the Muddy River, Clark County, Nevada The status of Moapa coriacea and Gila seminuda and status information on other fishes of the Muddy River, Clark County, Nevada
Moapa coriacea is endemic to the headwaters (Warm Springs area) of the Muddy River, Clark County, Nevada. The Warm Springs area was snorkeled and Moapa coriacea and Gila seminuda enumerated in August 1994 after a fire, and in May 1997 after a diversion dam had been removed from the downstream end. Gila seminuda had been reported in greatest abundance downstream from the Warm Springs area...
Authors
G.G. Scoppettone, P.H. Rissler, M.B. Nielsen, J.E. Harvey
Thermal exposure of juvenile fall Chinook salmon migrating through Little Goose Reservoir. Annual report 1998 Thermal exposure of juvenile fall Chinook salmon migrating through Little Goose Reservoir. Annual report 1998
Abstract not available
Authors
C. Haskell, D.A. Venditti, M. Tennier, J. Kraut
Correlation between plasma component levels of cultured fish and resistance to bacterial infection Correlation between plasma component levels of cultured fish and resistance to bacterial infection
Mortalities of yellowtail Seriola quinqueradiata artificially infected with Lactococcus garvieae and of rainbow trout Oncorhynchus mykiss artificially infected with Vibrio anguillarum were compared with the levels of plasma components measured prior to challenge. The levels of plasma total cholesterol, free cholesterol and phospholipid of fish surviving infection were significantly...
Authors
M. Maita, K.-I. Satoh, Y. Fukuda, H.-K. Lee, J. R. Winton, N. Okamoto
How organisms do the right thing: The attractor hypothesis How organisms do the right thing: The attractor hypothesis
Neo-Darwinian theory is highly successful at explaining the emergence of adaptive traits over successive generations. However, there are reasons to doubt its efficacy in explaining the observed, impressively detailed adaptive responses of organisms to day-to-day changes in their surroundings. Also, the theory lacks a clear mechanism to account for both plasticity and canalization. In...
Authors
J.M. Emlen, D.C. Freeman, A. Mills, J.H. Graham
Vulnerability to predation and physiological stress responses in juvenile chinook salmon (Oncorhynchus tshawytscha) experimentally infected with Renibacterium salmoninarum Vulnerability to predation and physiological stress responses in juvenile chinook salmon (Oncorhynchus tshawytscha) experimentally infected with Renibacterium salmoninarum
We experimentally infected juvenile chinook salmon (Oncorhynchus tshawytscha) with Renibacterium salmoninarum (Rs), the causative agent of bacterial kidney disease (BKD), to examine the vulnerability to predation of fish with differing levels of Rs infection and assess physiological change during progression of the disease. Immersion challenges conducted during 1992 and 1994 produced...
Authors
M.G. Mesa, T.P. Poe, A.G. Maule, C.B. Schreck