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
Photometric microdetermination of malathion
Carboxylic esters and lactones react with alkaline hydroxylamine to yield hydroxamates; these in acidic solution form colored iron(III) complexes. A photometric determination of such esters and lactones is thus permitted and has been extensively applied ( I-6). Hestrin ( 3) utilized this method for the microdetermination of acetylcholine and his procedure is much used for the in vitro study of cho
Authors
B.J. Kallman
Occurrence of eastern encephalitis virus in house sparrows
No abstract available.
Authors
L. N. Locke, J. E. Scanlon, R. J. Byrne, J. O. Knisley
Renal coccidiosis in oldsquaws (Clangula hyemalis) from Alaska
Renal coccidiosis was found in 4 of 12 oldsquaw ducks (Clangula hyemalis) collected from the north slope of Alaska and Prince William Sound. Numerous 1 to 2 mm white foci were observed on the kidney surface of one bird. Microscopically, there was distention of renal tubules with oocysts, flattening of tubular epithelium, and interstitial accumulation of mononuclear cells. Kidneys from several othe
Authors
J. Christian Franson, Dirk V. Derksen
Trout hepatoma--a preliminary report
Fish pathology and its role in fish culture were brought into prominence in the spring of 1960 by the disclosure of a high incidence of hepatomas in hatchery-reared rainbow trout. The current problem came to light as the result of a routine inspection of live trout shipments at a California border fish-disease checking station. This service is performed by personnel of the California Department of
Authors
R.R. Rucker, W. T. Yasutake, H. Wolf
Blood types in Pacific salmon
Intraspecific differences in erythrocyte antigens (blood types) were shown to occur in four species of Pacific salmon, the sockeye or red salmon (Oncorhynchus nerka), the chinook or king salmon (0. tshawytscha), the chum salmon (O. keta), and the pink salmon (O. gorbuscha). Antisalmon-erythrocyte sera prepared in rabbits and chickens were used after absorption of species-specific antibodies. Some
Authors
G.L. Ridgway, G.W. Klontz
Growth and oxidation kinetics in mixed microbial systems as a function of oxidation-reduction potential
No abstract available.
Authors
R.W. Okey, R.L. Cohen, D.D. Chapman, Gary Wedemeyer, L.E. Monteith, C.M. Proctor
The use of merthiolate on green eggs of the Chinook salmon
MERTHIOLATE has been used as a disinfecting agent for green and eyed eggs of various species (Gee and Sarles 1942, Snieszko and Friddle 1948). The present report is a description of the effects of the chemical on green eggs of the chinook salmon (Oncorhynchus tshawytscha).
The need for this study was indicated when a program of transporting green chinook eggs from various sources to the Coleman Na
Authors
R.R. Rucker
Rapid counting of nematoda in salmon by peptic digestion
The nematode parasite Anisakis sp. can be recovered, relatively unaltered, from chum salmon musculature by high temperature (52°+2°C.) peptic digestion of the flesh. The procedure, which is presented in detail, appears to be more thorough in isolating the parasite than dissection of the flesh and manual isolation of the worms. In addition, the procedure is rapid, comparatively simple, economical,
Authors
Joseph A. Stern, Diptiman Chakravarti, J. R. Uzmann, M. N. Hesselholt