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
Reductive dechlorination of DDT to DDD by yeast
Labeled DDD [ 1,1-dichlor-o-2,2-bis(p-chlorophenyl)-ethane] was formed from C14-labeled DDT in the presence of yeast. The formation of DDD from DDE [1,1-dichloro-2,2-bis (p-chlorophenyl)-ethylene] was not observed, indicating that a reductive dechlorination of DDT occurs.
Authors
Burton J. Kallman, Austin K. Andrews
In vitro culture of the flagellate protozoan Hexamita salmonis
Trophozoites of Hexamita salmonis, asserted pathogen of juvenile salmonid fishes, were isolated from two species of Pacific salmon hosts and cultured repeatedly in an organic medium saturated with nitrogen. Primary isolates and serial subcultures usually exhibited five- to tenfold population increases per passage.
Authors
J. R. Uzmann, S.H. Hayduk
The Hexamita(= Octomitus) problem: A preliminary report
THE INTESTINAL FLAGELLATE, Hexamita salmonis (Moore), was described in 1922 from trout in hatcheries throughout New York State. At first associated with the so-called whirling disease of brook trout (Salvelinus fontinalis), now believed to be a virus disease, Hexamita was subsequently held responsible for practically any otherwise unexplainable mortality in underyearling salmonids. Over the years,
Authors
J. R. Uzmann, J.W. Jesse
Formalin in the Hatchery
FORMALIN is used extensively in hatcheries to control external parasites of fish. There are reports that formalin is toxic at some hatcheries, especially when used on rainbow trout (Salmo gairdneri). This is a discussion of the development of the use of formalin to control fish parasite-in the hatchery, its properties, and some experimental work.
Authors
R.R. Rucker, W.G. Taylor, D.P. Toney
Co-oxidation of the sulfur-containing amino acids in an autoxidizing lipid system
Oxidation of the sulfur amino acids by autoxidizing lipids was studied in a model system consisting of an amino acid dispersed in cold-pressed, molecularly distilled menhaden oil (20–80% w/w). Under all conditions investigated, cysteine was oxidized completely to cystine. Preliminary results suggest that at 110°C the oxidation follows first-order kinetics for at least the first 8 hr. A specific re
Authors
Gary Wedemeyer, A.M. Dollar
Mycobacteria in adult salmonid fishes returning to national fish hatcheries in Washington, Oregon and California in 1958-59
Incidence of acid-fast bacillus infections in salmonid fishes at West Coast hatcheries was determined for 1957-59. No evidence was obtained which would indicate a definite trend towards either increased or decreased rates of infection. It is apparent that the incidence of infection is higher in hatchery-marked fish than in unmarked fish. Only one hatchery was found free of infection during the 3 y
Authors
A. J. Ross
Fish and wildlife aspects of chemical mosquito control
No abstract available.
Authors
P. F. Springer
A method for live-trapping dusky grouse
A drive trap, used to capture dusky grouse (Dendragapus obscurus obscurus) females and their broods for transplantation, is described. The trap consists of two 75-foot wings, leading to a netting-covered enclosure with a smaller wooden catch box at the rear. A four-man crew finds a brood in open cover and, while one or two men keep the brood under observation, the others rig the trap along the bir
Authors
R. E. Tomlinson
[Book review] Tuberculosis in Animals, by J.N. Ritchie; W.D. McCrae, editors
No abstract available.
Authors
C. M. Herman
Tests of arasan 75-endrin 50W rodent repellent on shumard and swamp chestnut oak acorns
No abstract available.
Authors
R.A. Klawitter, J. Stubbs, F.M. Johnson
Relation of screening to field testing in development of plant control methods
No abstract available.
Authors
J.H. Steenis
Abnormalities among brown-headed cowbirds trapped in Alabama
No abstract available.
Authors
P.A. Stewart