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: 2475
Prototype water reuse system
A small-scale water reuse system (150 L/min) was developed to create an environment for observing fish under a variety of temperature regimes. Key concerns of disease control, water quality, temperature control, and efficiency and case of operation were addressed. Northern squawfish (Ptychocheilus oregonensis) were held at loading densities ranging from 0.11 to 0.97 kg/L per minute and at temperat
Authors
G. Lucchetti, G.A. Gray
Water reuse systems: A review of the principal components
Principal components of water reuse systems include ammonia removal, disease control, temperature control, aeration, and particulate filtration. Effective ammonia removal techniques include air stripping, ion exchange, and biofiltration. Selection of a particular technique largely depends on site-specific requirements (e.g., space, existing water quality, and fish densities). Disease control, alth
Authors
G. Lucchetti, G.A. Gray
Growth and longevity of the cui-ui and longevity of other catostomids and cyprinids in western North America
Annulus formation on opercula of the cui-ui Chasmistes cujus in Pyramid Lake, Nevada, was validated over an 8-year interval. Many fish were old, as old as 41 years of age, As many as three annuli were hidden (covered by supporting bone) in older fish. Growth was rapid during the first 10 years, slow from 10 to 20 years, and extremely slow or nil after 20 years. Age and growth were strongly correla
Authors
G.G. Scoppettone, M.E. Coleman
Use of diagnostic bones to identify and estimate original lengths of ingested prey fishes
We examined and measured cleithra, dentaries, opercles, and pharyngeal arches – bones found to persist during digestion of most prey fish – to identify 24 prey fish species and back-calculate their original fork length. Eighteen of the 24 species examined could be easily distinguished; however, for certain congenerics, identification was neither consistent nor reliable for all bones within the siz
Authors
H.C. Hansel, S.D. Duke, P.T. Lofy, G.A. Gray
Relation between distance transferred from natal stream and recovery rate for hatchery coho salmon, Oncorhynchus kisutch
Distance transferred from the natal stream was negatively related to recovery rate (recruits per gram of juveniles released) for hatchery-reared coho salmon Oncorhynchus kisutch. This relation, which reflects the important influence of genetic adaptation and genetic differences among stocks on recovery rates and survival, should be useful in deciding whether or not to transfer fish.
Authors
R.R. Reisenbichler
Effects of food deprivation on the larvae of two flatfishes
For greatest survival, first-feeding halibut Paralichthys californicus and diamond turbot Hypsopsetta guttulata required food by the day of total yolk absorption. Some halibut larvae survived if fed 1 or 2 d after yolk depletion, but their growth rate was significantly less than larvae fed earlier. Survival of 3-wk-old larvae was greater in treatments with shorter starvation periods. A small perce
Authors
D.M. Gadomski, J.H. Petersen
Radioimmunoassay of salmon growth hormone (GH) using recombinant chum salmon GH
Abstract not available
Authors
A.N. Palmisano, P. Swanson, H. Kawauchi, S. Moriyama, Walton W. Dickhoff
Predation of Karluk River sockeye salmon by coho salmon and char
The number of sockeye salmon, Oncorhynchus nerka, in Alaska's Karluk River (Fig. 1) declined from millions to thousands during the early part of the present century. Rounsefell (1958) discussed alternative explanations for the decline including a general loss offertility ofthe system as the number of salmon carcasses declined, competition, overfishing, subtle changes in climate, and predation; he
Authors
J.D. McIntyre, R.R. Reisenbichler, J.M. Emlen, R.L. Wilmot, J.E. Finn
Neutralizing monoclonal antibodies recognize antigenic variants among isolates of infectious hematopoietic necrosis virus
eutralizing monoclonal antibodies were developed against strains of infectious hematopoietic necrosis virus (IHNV) from steelhead trout Salmo gairdneri in the Deschutes River of Oregon, chinook salmon Oncorhynchus tshawytscha in the Sacramento River of California, and rainbow trout Salmo gairdneri reared in the Hagerman Valley of Idaho, USA. These antibodies were tested for neutralization of 12 IH
Authors
J. R. Winton, C.N. Arakawa, C.N. Lannan, J. L. Fryer
Vaccination against infectious hematopoietic necrosis
No abstract available.
Authors
J.C. Leong, J. L. Fryer, J. R. Winton
Potential hazard for spread of infectious disease by transplantation of fish
No abstract available.
Authors
J. S. Rohovec, J. R. Winton, J. L. Fryer