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
Seasonal influence of nutrients on the physiology and behavior of captive canvasbacks (Aythya valisineria) Seasonal influence of nutrients on the physiology and behavior of captive canvasbacks (Aythya valisineria)
Captive canvasbacks (Aythya valisineria) were maintained ad libitum on five diets during the winters of 1978-79 and 1979-80 to evaluate the effects of varying protein and energy levels on feed intake and condition. Diets were formulated to simulate either a natural diet high in invertebrates or one high in vegetation. Two diets low in protein and energy simulated stress diets. Feed...
Authors
Matthew C. Perry
Toxicity of methyl parathion to bats: Mortality and coordination loss Toxicity of methyl parathion to bats: Mortality and coordination loss
The 24-h oral LD50 of methyl parathion (phosphorothioic acid O, O-dimethyl O-(4-nitrophenyl) ester) to little brown bats (Myotis lucifugus) (372 mg/kg) was 8.5 times the LD50 for mice (Mus musculus) (44 mg/kg). However, orally dosed mice either died or appeared behaviorally normal after 2 to 3 h, whereas many dosed bats, although alive at 24 h, could not right themselves when placed on...
Authors
D. R. Clark
Frozen gene pools - A future for species otherwise destined for extinction Frozen gene pools - A future for species otherwise destined for extinction
Conclusion: Semen banks and ova and embryo banks can be practical methods to maintain gene pools. Gene pool preservation is desperately needed today due to the rapid decline in number of species and their habitat, a matter that is of concern to.biologists, economists, and politicians worldwide. Techniques are available for the cryopreservation of semen from many animals (and embryos from...
Authors
G.F. Gee
King rails banded at the Patuxent Wildlife Research Center King rails banded at the Patuxent Wildlife Research Center
No abstract available.
Authors
B. Meanley
Waterfowl and wetlands management in the coastal zone of the Atlantic Flyway: Meeting and summary comments Waterfowl and wetlands management in the coastal zone of the Atlantic Flyway: Meeting and summary comments
A conference on waterfowl and wetlands along the Atlantic coast of North America was held in Wilmington, Delaware in September 1986. Discussions centered around coastal impoundments and Open Marsh Water Management as methods of mosquito control and waterfowl enhancement. Single purpose management of coastal marshes, whether for mosquito control or waterfowl, may not be the most...
Authors
R.M. Erwin
Cholinesterase inhibition in meadow voles (Microtus Pennsylvanicus) following field applications of orthene® Cholinesterase inhibition in meadow voles (Microtus Pennsylvanicus) following field applications of orthene®
Brain acetylcholinesterase activity in field-caught meadow voles (Microtus pennsylvanicus) was depressed after a field-spray of Orthene® (acephate: acetylphosphoramidothioic acid O,S-dimethyl ester) by as much as 32% in 1982 and 38% in 1983. Short-term recovery was demonstrated and occurred in a time-dependent fashion in 1982. Plasma Cholinesterase levels were more variable but also were...
Authors
David A. Jett
Bird-borne satellite transmitter and location program Bird-borne satellite transmitter and location program
No abstract available.
Authors
T.E. Strikwerda, M.R. Fuller, W.S. Seegar, P.W. Howey, H.D. Black
Metal residues in bat colonies, Jackson County, Florida, 1981-1983 Metal residues in bat colonies, Jackson County, Florida, 1981-1983
No abstract available.
Authors
D. R. Clark, A.S. Wenner, John F. Moore
Response: Evidence for selection of old trees by red-cockaded woodpeckers Response: Evidence for selection of old trees by red-cockaded woodpeckers
No abstract available.
Authors
B. Kenneth Williams, R. Field
Chemical scent constituents in urine of wolf (Canis lupus) and their dependence on reproductive hormones Chemical scent constituents in urine of wolf (Canis lupus) and their dependence on reproductive hormones
The volatile components of castrated male and ovariectomized female wolf urine were investigated and correlated with the administration of testosterone or estradiol and progesterone. The results indicate that testosterone induces in the castrated male the formation of some compounds typically associated with the intact male, while reducing the levels of some compounds associated with...
Authors
J. Raymer, D. Wiesler, M. Novotny, C. Asa, U.S. Seal, L.D. Mech
An overview of raptor conservation in Latin America An overview of raptor conservation in Latin America
Prior to the last decade, biological studies of raptorial birds in Latin America were almost nonexistent. For many species little more was known than their general range and habitat type. The last few years have seen the opening of a door to what will surely be a flood of scientific investigations. Ultimately, the survival of raptor communities in Latin America depends not only on...
Authors
D. H. Ellis, D.G. Smith