Publications
This is a list of publications written by Patuxent employees since Patuxent opened in 1939. To search for Patuxent's publications by author or title, please click below to go to the USGS Publication Warehouse.
Filter Total Items: 8128
Bioaccumulation of selenium by snakes and frogs in the San Joaquin Valley, California Bioaccumulation of selenium by snakes and frogs in the San Joaquin Valley, California
Livers of gopher snakes (Pituophis melanoleucus) from Kesterson Reservoir (Merced County, California) contained significantly higher mean selenium concentrations (11.1 .mu.g/g, dry weight) than those from two nearby reference sites (2.05 and 2.14 .mu.g/g). Livers of bullfrogs (Rana catesbeiana) collected from the San Luis Drain at Kersterson Reservoir also contained significantly higher...
Authors
H. M. Ohlendorf, R. L. Hothem, Thomas W. Aldrich
Postfledging survival of European starlings exposed as nestlings to an organophosphorus insecticide Postfledging survival of European starlings exposed as nestlings to an organophosphorus insecticide
To test the hypothesis that exposure to organophosphorus (OP) insecticides reduces postfledging survival of altricial birds, 16—d—old European Starlings (Sturnus vulgaris) were weighed and orally dosed with corn oil containing 6.0 mg of dicrotophos per kilogram of body mass or an equivalent exposure of pure corn oil (controls). Two days later, each survivor was weighed again and...
Authors
K. L. Stromborg, C.E. Grue, J.D. Nichols, Gary R. Hepp, J.E. Hines, H. C. Bourne
Combined extraction-cleanup column chromatographic procedure for determination of dicofol in avian eggs Combined extraction-cleanup column chromatographic procedure for determination of dicofol in avian eggs
Dicofol in avian eggs was completely oxidized to dichlorobenzophenone (DCBP) when a hexane Soxhlet extraction procedure was used. This degradation did not occur with other avian tissues (muscle and liver). For this reason, a combined extraction-cleanup column chromatographic procedure, without added heat, was developed for the determination of dicofol in avian eggs. Homogenized...
Authors
A. J. Krynitsky, C. J. Stafford, Stanley N. Wiemeyer
Detection of parvoviruses in wolf feces by electron microscopy Detection of parvoviruses in wolf feces by electron microscopy
One hundred fifteen wolf (Canis lupus) feces were collected between 1980 and 1984 from northeastern Minnesota and were examined for canine parvovirus by negative contrast electron microscopy. Of these, seven (6%) samples revealed the presence of parvovirus. Some of these viruses were able to grow in cell cultures forming intranuclear inclusion bodies and giant cells.
Authors
M.A. Muneer, I.O. Farah, K.A. Pomeroy, S.M. Goyal, L.D. Mech
Relationship between winter severity and wolf depredations on domestic animals in Minnesota Relationship between winter severity and wolf depredations on domestic animals in Minnesota
No abstract available.
Authors
L.D. Mech, S. H. Fritts, W.J. Paul
Mate desertion in the snail kite Mate desertion in the snail kite
Mate desertion during the breeding cycle was documented at 28 of 36 (78%) snail kite, Rostrhamus sociabilis nests in Florida between 1979 and 1983. Offspring mortality occurred at only one deserted nest, however. Parents that were deserted by their mates continued to care for their young until independence (3?5 additional weeks) and provided snails at a rate similar to that of both...
Authors
S. R. Beissinger, N.F.R. Snyder
Selenium toxicosis in wild aquatic birds Selenium toxicosis in wild aquatic birds
Severe gross and microscopic lesions and other changes were found in adult aquatic birds and in embryos from Kesterson Reservoir (a portion of Kesterson National Wildlife Refuge), Merced County, Calif., during 1984. Adult birds from that area were emaciated, had subacute to extensive chronic hepatic lesions, and had excess fluid and fibrin in the peritoneal cavity. Biochemical changes in...
Authors
H. M. Ohlendorf, A. W. Kilness, J. L. Simmons, R. K. Stroud, D. J. Hoffman, John F. Moore
Embryotoxic and teratogenic effects of selenium in the diet of mallards Embryotoxic and teratogenic effects of selenium in the diet of mallards
Mallards (Anas platyrhynchos) were fed a control diet, diets containing 1, 5, 10, or 25 ppm Se as sodium selenite, or a diet containing 10 ppm Se as seleno-DL-methionine in the first of two experiments. Selenium at 10 ppm as selenomethionine or 25 ppm as sodium selenite caused a 40-44% decrease in the total number of eggs that hatched compared to controls. Selenium at 25 ppm (sodium...
Authors
D. J. Hoffman, G. H. Heinz
The brown tree snake: a harmful pest species The brown tree snake: a harmful pest species
No abstract available.
Authors
T. H. Fritts
Preliminary Report, Herpetology Collections of Cerro de la Neblina Preliminary Report, Herpetology Collections of Cerro de la Neblina
No abstract available.
Authors
R.W. McDiarmid, R. Cocroft, A. Paolillo