Publications
This list of publications includes peer-review journal articles, official USGS publications series, reports and more authored by scientists in the Ecosystems Mission Area. A database of all USGS publications, with advanced search features, can be accessed at the USGS Publications Warehouse.
Filter Total Items: 41778
Effect of feeding and of DDT on the activity of hepatic glucose 6- phosphate dehydrogenase in two salmonids
The specific activity of liver glucose 6-phosphate dehydrogenase in yearling rainbow trout remained unchanged when the fish were starved for periods as long as 8 weeks and when starved animals were fed diets of various compositions. Injection of insulin concurrently with refeeding also failed to alter the specific activity of the enzyme in trout. The absence of a dietary or insulin influence on th
Authors
Donald R. Buhler, P. Benville
Chronic oral DDT toxicity in juvenile coho and chinook salmon
Technical and p,p′-DDT was incorporated into test diets and fed to juvenile chinook and coho salmon for periods as long as 95 days. Pure p,p′-DDT was slightly more toxic to young salmon than was the technical DDT mixture. Chinook salmon appeared to be 2–3 times more sensitive to a given concentration of DDT in the diet than were coho salmon. The size of the fish greatly influenced toxicity, smalle
Authors
Donald R. Buhler, Mary E. Rasmusson, W.E. Shanks
Comparison of thermal data from airborne and vessel surveys of Lake Erie
A study of the applications of airborne infrared equipment for detecting water masses and currents of the Great Lakes is described. Infrared scanners were used to make thermal strip maps and an infrared radiometer was used to obtain surface temperatures of the western end of Lake Erie and the lower Detroit River. Simultaneously, surface water temperatures were taken and water samples were collecte
Authors
Alfred M. Beeton, James W. Moffett, Dana C. Parker
Intercontinental and transcontinental dissemination and transfaunation of fish parasites with emphasis on whirling disease (Myxosoma cerebralis)
No abstract available at this time
Authors
G. L. Hoffman
Host susceptibility and the effect of aging, freezing, heat, and chemicals on spores of Myxosoma cerebralis
No abstract available.
Authors
G. L. Hoffman, R.E. Putz
Epitheliocystis, a new infectious disease of the bluegill (Lepomis macrochirus)
No abstract available.
Authors
G. L. Hoffman, C.E. Dunbar, K. Wolf, L.O. Zwillenberg
Infectious pancreatic necrosis virus: Lyophilization and subsequent stability in storage at 4 C
Infectious pancreatic necrosis virus (ATCC strain VR # 299) was lyophilized with different additives and stored at 4 C. Ampoules were assayed at 2 days, at 1, 3, and 6 months, and at 1, 3, and 4 years. Processing losses were least and subsequent maintenance of infectivity was best in skim milk, lactalbumin hydrolysate, and lactose. Quantitative data are given in tabular form.
Authors
K. Wolf, M. C. Quimby, C. P. Carlson
Plaque assay and some characteristics of Egtved virus (virus of viral hemorrhagic septicemia of rainbow trout)
A plaque assay and some growth characteristics of Egtved virus in a line of rainbow trout cells (RTG-2) are described. Preliminary experiments with metabolic inhibitors suggest that the viral genome is ribonucleic acid.
Authors
J. B. Campbell, Ken Wolf
Quantitative comparison of peritoneal washes and feces for detecting infectious pancreatic necrosis (IPN) virus in carrier brook trout
No abstract available.
Authors
J.L. Billi, K. Wolf
Bacteria in blood and kidney of apparently healthy hatchery trout
No abstract available.
Authors
G. L. Bullock, S. F. Snieszko