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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

Organophosphorus insecticide induced decrease in plasma luteinizing hormone concentration in white-footed mice Organophosphorus insecticide induced decrease in plasma luteinizing hormone concentration in white-footed mice

Oral intubation of 50 and 100 mg/kg acephate inhibited brain acetylcholinesterase (AChE) activity by 45% and 56%, and reduced basal luteinizing hormone (LH) concentration by 29% and 25% after 4 h in white-footed mice (Peromyscus leucopus noveboracensis). Dietary exposure to 25, 100, and 400 ppm acephate for 5 days substantially inhibited brain AChE activity, but did not affect plasma LH
Authors
Barnett A. Rattner, S.D. Michael

[Book review] The birds of San Diego County [Book review] The birds of San Diego County

San Diego County, California is larger in area than 2 of the 50 states (combined), its geographic (and thus biological) diversity ranges from the seacoast across mountains of nearly 2,000 m elevation to extreme desert, it is the southwesternmost county of the contiguous U.S., and it is inhabited by dedicated birders whose observations have boosted the county list to more than 450 species...
Authors
Richard C. Banks

Optimal management strategies in variable environments: Stochastic optimal control methods Optimal management strategies in variable environments: Stochastic optimal control methods

Dynamic optimization was used to investigate the optimal defoliation of salt desert shrubs in north-western Utah. Management was formulated in the context of optimal stochastic control theory, with objective functions composed of discounted or time-averaged biomass yields. Climatic variability and community patterns of salt desert shrublands make the application of stochastic optimal...
Authors
B. Kenneth Williams

Evening roosts of the snail kite in Florida Evening roosts of the snail kite in Florida

A total of 36 roost sites of the Snail Kite (Rostrhamus sociabilis) were studied in southern Florida, of which four (11%) were used regularly for 6 or more years. Major roosts were also used as nesting sites. All roosts were in flooded marshes and 33 (91.6%) were in stands of coastal-plain willow. Population increase and the number of roosts were strongly correlated. The number of kites...
Authors
P.W. Sykes
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