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
Atrazine Hazards to Fish, Wildlife, and Invertebrates: A Synoptic Review Atrazine Hazards to Fish, Wildlife, and Invertebrates: A Synoptic Review
The herbicide atrazine (2chloro4ethylamino6isopropylamino1,3,5triazine) is the most heavily used agricultural pesticide in North America. Domestically, more than 50 million kg are applied yearly to more than 25 million ha, primarily to control weeds in corn and sorghum crops. Atrazine residues have been detected in runoff from treated fields in lakes and streams at phytotoxic levels...
Authors
R. Eisler
Region 4 Migratory Nongame Bird Workshop -- Summary Region 4 Migratory Nongame Bird Workshop -- Summary
No abstract available.
Authors
M.A. Howe
Census/survey methods: Colonial waterbirds Census/survey methods: Colonial waterbirds
No abstract available.
Authors
R.M. Erwin
Growth and fatbody cycles in feral populations of the African clawed frog, Xenopus laevis (Pipidae), in California with comments on reproduction Growth and fatbody cycles in feral populations of the African clawed frog, Xenopus laevis (Pipidae), in California with comments on reproduction
Feral populations of the African clawed frog (Xenopus laevis) exist in several areas of southern California. By following the first cohort of progeny produced by African clawed frogs at a recently colonized site, data on the growth rates and age at first maturity were obtained in field conditions. Females reached maturity at an earlier age than males, grew faster than males, and attained...
Authors
M. J. McCoid, T. H. Fritts
Environmental contaminants, human disturbance and nesting of double-crested cormorants in northwestern Washington Environmental contaminants, human disturbance and nesting of double-crested cormorants in northwestern Washington
Double-crested Cormorants (Phalacrocorax auritus) in extreme northwestern Washington produced few young (0.27/occupied nest) in 1984; the clutch size was generally small and eggs, if laid at all, were laid later than usual. Residues (geometric means, wet weight) of DDE (0.58 and 0.59 ppm) in eggs from Colville Island and Protection Island were lower than from other locations in the...
Authors
Charles J. Henny, L. J. Blus, S.P. Thompson, U.W. Wilson
Observations of a nest of red-crowned ant-tanagers in Paraguay Observations of a nest of red-crowned ant-tanagers in Paraguay
The nest and nesting behaviorof a pair of Red-crowned Ant-Tanagers ( Habia rubica rubica) from Paraguay is described. Results are compared with those from studies of other subspecies. Because the species occurs in temperate, subtropical, and tropical habitats from Mexico south to Paraguay, northern Argentina, and southeastern Brazil, we expected details of breeding to differ in different...
Authors
M.S. Foster, N.E. Lopez H., M.E. Escobar
Brain cholinesterase activity of nestling great egrets, snowy egrets, and black-crowned night-herons Brain cholinesterase activity of nestling great egrets, snowy egrets, and black-crowned night-herons
Inhibition of brain cholinesterase (ChE) activity in birds is often used to diagnose exposure or death from organophosphorus or carbmate pesticides. Brain ChE activity in the young of altricial species increase with age; however, this relationship has only been demonstrated in the European starling (Sturnus vulgaris). Brain ChE activity of nestling great egrets (Casmerodius albus)...
Authors
T. W. Custer, H. M. Ohlendorf
Field-testing of commercially-manufactured capture collars on white-tailed deer (Odocoileus virginianus) Field-testing of commercially-manufactured capture collars on white-tailed deer (Odocoileus virginianus)
No abstract available.
Authors
L.D. Mech, K. Kunkel, R. Chapman, T.J. Kreeger
Rise and fall of endrin usage in Washington state fruit orchards: Effects on wildlife Rise and fall of endrin usage in Washington state fruit orchards: Effects on wildlife
A study of the effects of endrin on wildlife was conducted from 1981 to 1983 in fruit orchards in central Washington State. The single post-harvest application of endrin as a rodenticide resulted in both acute and chronic toxicity to a variety of avian species. Of 194 birds found dead, brains of 125 were analysed; endrin toxicosis accounted for >24% of the total and 37% of those analysed...
Authors
L. J. Blus, Charles J. Henny, R. A. Grove
Population declines in North American birds that migrate to the neotropics Population declines in North American birds that migrate to the neotropics
Using data from the North American Breeding Bird Survey, we determined that most neotropical migrant bird species that breed in forests of the eastern United States and Canada have recently (1978-1987) declined in abundance after a period of stable or increasing populations. Most permanent residents and temperate-zone migrants did not show a general pattern of decrease during this period...
Authors
C.S. Robbins, J.R. Sauer, R.S. Greenberg, Sam Droege