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Publications

Below is a list of available WFRC peer reviewed and published science.

Filter Total Items: 2525

Mucous lysozyme levels in hatchery coho salmon (Oncorhynchus kisutch) and spring chinook salmon (O. tshawytscha) early in the parr-smolt transformation Mucous lysozyme levels in hatchery coho salmon (Oncorhynchus kisutch) and spring chinook salmon (O. tshawytscha) early in the parr-smolt transformation

Mucous lysozyme concentrations were determined in juvenile coho salmon (Oncorhynchus kisutch) and spring chinook salmon (O. tshawytscha) to establish reference levels during the time associated with the parr-smolt transformation. The first reported naris and vent mucous lysozyme levels are provided for spring chinook salmon and coho salmon. Naris mucous lysozyme levels ranged between 300...
Authors
R. M. Schrock, S.D. Smith, A.G. Maule, S.K. Doulos, J.J. Rockowski

Influence of breeding habitat on bear predation and age at maturity and sexual dimorphism of sockeye salmon populations Influence of breeding habitat on bear predation and age at maturity and sexual dimorphism of sockeye salmon populations

Age structure and morphology differ among Pacific salmon (Oncorhynchus spp.) populations. Sexual selection and reproductive capacity (fecundity and egg size) generally favor large (old), deep-bodied fish. We hypothesized that natural selection from physical access to spawning grounds and size-biased predation by bears, Ursus spp., opposes such large, deep-bodied salmon. Accordingly, size...
Authors
Thomas P. Quinn, Lisa A. Wetzel, Susan Bishop, Kristi Overberg, Donald E. Rogers

Buoyancy compensation of juvenile chinook salmon implanted with two different size dummy transmitters Buoyancy compensation of juvenile chinook salmon implanted with two different size dummy transmitters

We investigated the effect of two different sizes of surgically implanted transmitters on the buoyancy compensation of juvenile chinook salmon Oncorhynchus tshawytscha. We determined buoyancy by measuring the density of fish with a filled air bladder in graded salinity baths. In addition, we examined the effect of pressure changes on buoyancy by measuring the pressure reduction (PR) at...
Authors
R.W. Perry, N.S. Adams, D.W. Rondorf

Green fluorescent protein is lighting up fungal biology Green fluorescent protein is lighting up fungal biology

Prasher (42) cloned a cDNA for the green fluorescent protein (GFP) gene from the jellyfishAequorea victoria in 1992. Shortly thereafter, to the amazement of many investigators, this gene or derivatives thereof were successfully expressed and conferred fluorescence to bacteria andCaenorhabditis elegans cells in culture (10,31), followed by yeast (24, 39), mammals (40), Drosophila (66)...
Authors
J.M. Lorang, R.P Tuori, J.P Martinez, T. L. Sawyer, R. S. Redman, J. A. Rollins, T.J. Wolpert, K.B. Johnson, R. J. Rodriguez, M. B. Dickman, L.M. Ciuffetti

Copper, cadmium, and zinc concentrations in juvenile Chinook salmon and selected fish-forage organisms (aquatic insects) in the upper Sacramento River, California Copper, cadmium, and zinc concentrations in juvenile Chinook salmon and selected fish-forage organisms (aquatic insects) in the upper Sacramento River, California

This study assessed the downstream extent andseverity of copper (Cu), cadmium (Cd), and zinc (Zn)contamination from acid mine drainage on juvenile chinook salmon(Oncorhynchus tshawytscha) and aquatic insects over aroughly 270-km reach of the Sacramento River below KeswickReservoir. During April–May 1998, salmon were collected fromfour sites in the river and from a fish hatchery that...
Authors
Michael K. Saiki, Barbara A. Martin, Larry D. Thompson, Daniel Walsh

Negligible risk associated with the movement of processed rainbow trout, Oncorhynchus mykiss (Walbaum), from an infectious haematopoietic necrosis virus (IHNV) endemic area Negligible risk associated with the movement of processed rainbow trout, Oncorhynchus mykiss (Walbaum), from an infectious haematopoietic necrosis virus (IHNV) endemic area

To assess the risk of transmission of infectious haematopoietic necrosis virus (IHNV) associated with the movement of processed rainbow trout, Oncorhynchus mykiss, from an area where the virus is endemic, 240 freshly eviscerated fish (225-500 g) exhibiting spinal curvature or spinal compression types of deformities were tested for IHNV by virus isolation and polymerase chain reaction...
Authors
S. E. LaPatra, W.N. Batts, K. Overturf, G.N. Jones, W. D. Shewmaker, J. R. Winton
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