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
Hybridization and cytonuclear associations among native westslope cutthroat trout, introduced rainbow trout, and their hybrids within the Stehekin River drainage, North Cascades National Park Hybridization and cytonuclear associations among native westslope cutthroat trout, introduced rainbow trout, and their hybrids within the Stehekin River drainage, North Cascades National Park
Historic introductions of nonnative rainbow trout Oncorhynchus mykiss into the native habitats of cutthroat trout O. clarkii have impacted cutthroat trout populations through introgressive hybridization, creating challenges and concerns for cutthroat trout conservation. We examined the effects of rainbow trout introductions on the native westslope cutthroat trout O. c. lewisii within the...
Authors
C.O. Ostberg, R. J. Rodriguez
Dynamics of viral hemorrhagic septicemia, viral erythrocytic necrosis and ichthyophoniasis in confined juvenile Pacific herring Clupea pallasii Dynamics of viral hemorrhagic septicemia, viral erythrocytic necrosis and ichthyophoniasis in confined juvenile Pacific herring Clupea pallasii
Capture of wild, juvenile herring Clupea pallasii from Puget Sound (Washington, USA) and confinement in laboratory tanks resulted in outbreaks of viral hemorrhagic septicemia (VHS), viral erythrocytic necrosis (VEN) and ichthyophoniasis; however, the timing and progression of the 3 diseases differed. The VHS epidemic occurred first, characterized by an initially low infection prevalence...
Authors
P. Hershberger, A. Hart, J. Gregg, N. Elder, J. Winton
Fish tag recovery from the American White Pelican nesting colony on Anaho Island, Pyramid Lake, Nevada Fish tag recovery from the American White Pelican nesting colony on Anaho Island, Pyramid Lake, Nevada
No abstract available
Authors
G.G. Scoppettone, P.H. Rissler, D. Withers, M.C. Fabes
Sequence motifs and prokaryotic expression of the reptilian paramyxovirus fusion protein Sequence motifs and prokaryotic expression of the reptilian paramyxovirus fusion protein
Fourteen reptilian paramyxovirus isolates were chosen to represent the known extent of genetic diversity among this novel group of viruses. Selected regions of the fusion (F) gene were sequenced, analyzed and compared. The F gene of all isolates contained conserved motifs homologous to those described for other members of the family Paramyxoviridae including: signal peptide...
Authors
J. Franke, W.N. Batts, W. Ahne, Gael Kurath, J. R. Winton
Using diatom assemblages to assess urban stream conditions Using diatom assemblages to assess urban stream conditions
We characterized changes in diatom assemblages along an urban-to-rural gradient to assess impacts of urbanization on stream conditions. Diatoms, water chemistry, and physical variables of riffles at 19 urban and 28 rural stream sites were sampled and assessed during the summer base flow period. Near stream land use was characterized using GIS. In addition, one urban and one rural site...
Authors
C. E. Walker, Y. Pan
Effects of sediment cover on survival and development of white sturgeon embryos Effects of sediment cover on survival and development of white sturgeon embryos
A simple, inexpensive apparatus (embryo incubation unit [EIU]) was developed and used to assess the relationship between sediment cover (Kootenai River sediments, 97% by weight in the 0.83-mm- to 1.0-mm-diameter range) and survival of white sturgeon Acipenser transmontanus embryos in the laboratory. An apparatus-testing trial assessed the effects of two sediment depths (5 and 20 mm)...
Authors
T.J. Kock, J.L. Congleton, P.J. Anders
Morphometric discrimination of early life stage Lampetra tridentata and L richardsoni (Petromyzonidae) from the Columbia river basin Morphometric discrimination of early life stage Lampetra tridentata and L richardsoni (Petromyzonidae) from the Columbia river basin
The effectiveness of morphometric and meristic characteristics for taxonomic discrimination of Lampetra tridentata and L. richardsoni (Petromyzonidae) during embryological, prolarval, and early larval stages (i.e., age class 1) were examined. Mean chorion diameter increased with time from fertilization to hatch and was significantly greater for L. tridentata than for L. richardsoni at 1...
Authors
M.H. Meeuwig, J.M. Bayer, R.A. Reiche
Evaluation of larval sucker drift ecology at two proposed irrigation pump sites on the Williamson River Evaluation of larval sucker drift ecology at two proposed irrigation pump sites on the Williamson River
n/a
Authors
T.J. Tyler, C.M. Ellsworth, S. P. VanderKooi, R.S. Shively
Assess current and potential salmonid production in Rattlesnake Creek associated with restoration efforts Assess current and potential salmonid production in Rattlesnake Creek associated with restoration efforts
No abstract available
Authors
M.B. Allen, P.J. Connolly
Guide to the identification of fish protozoan and metazoan parasites in stained tissue sections Guide to the identification of fish protozoan and metazoan parasites in stained tissue sections
The identification of protozoan and metazoan parasites is traditionally carried out using a series of classical keys based upon the morphology of the whole organism. However, in stained tissue sections prepared for light microscopy, taxonomic features will be missing, thus making parasite identification difficult. This work highlights the characteristic features of representative...
Authors
D.W. Bruno, B. Nowak, D.G. Elliott
Comprehensive gene expression profiling following DNA vaccination of rainbow trout against infectious hematopoietic necrosis virus Comprehensive gene expression profiling following DNA vaccination of rainbow trout against infectious hematopoietic necrosis virus
The DNA vaccine based on the glycoprotein gene of Infectious hematopoietic necrosis virus induces a non-specific anti-viral immune response and long-term specific immunity against IHNV. This study characterized gene expression responses associated with the early anti-viral response. Homozygous rainbow trout were injected intra-muscularly (I.M.) with vector DNA or the IHNV DNA vaccine...
Authors
Maureen K. Purcell, Krista M. Nichols, James R. Winton, Gael Kurath, Gary H. Thorgaard, Paul Wheeler, John D. Hansen, Russell P. Herwig, Linda K. Park
Effects of hydropower operations on spawning habitat, rearing habitat, and standing/entrapment mortality of fall Chinook salmon in the Hanford Reach of the Columbia River Effects of hydropower operations on spawning habitat, rearing habitat, and standing/entrapment mortality of fall Chinook salmon in the Hanford Reach of the Columbia River
This report describes research conducted primarily in 2003 and 2004 to evaluate the effects of upstream dam operations on spawning and rearing conditions for fall Chinook salmon, Oncorhynchus tshawytscha, in the Hanford Reach of the Columbia River. Results from habitat modeling tasks which continued in 2005 and 2006 are also included in this report. This study is focused on the effects...
Authors
Donald R. Anglin, Steven L. Haeseker, Joseph J. Skalicky, Howard Schaller, Kenneth F. Tiffan, James R. Hatten, Paul Hoffarth, John Nugent, David Benner, Marv Yoshinaka