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
Dieldrin mortality of lesser snow geese in Missouri Dieldrin mortality of lesser snow geese in Missouri
In March and April 1974, 157 lesser snow geese (Chen caerulescens) died from dieldrin poisoning during northward migration through western Missouri. Evidence strongly suggested that the mortality in Missouri resulted from delayed effects upon geese exposed to aldrin-treated rice seed on wintering areas in southeast Texas.
Authors
K.M. Babcock, Edward L. Flickinger
Effects of external applications of No. 2 fuel oil on common eider eggs Effects of external applications of No. 2 fuel oil on common eider eggs
Because eggs of marine birds may be exposed to oil adhering to the feathers of adult birds, a study was undertaken to determine the effects of oil contamination. Two hundred common eider eggs were divided into four experimental sets of 50 each. Two sets were treated with No. 2 fuel oil in amounts of 5 microliters to 20 microliters; a third with 20 microliters of propylene glycol, a...
Authors
Robert C. Szaro, P.H. Albers
Effects of external applications of fuel oil on hatchability of mallard eggs Effects of external applications of fuel oil on hatchability of mallard eggs
An experiment was performed to determine the toxicity of oil to incubating eggs. Number 2 fuel oil, a mixture of 9 paraffin compounds, and propylene glycol were applied to the surface of artificially incubated mallard (Anas platyrhynchos) eggs. Seven groups of 50 eggs each were treated with 1, 5, 10, 20, and 50 μl of fuel oil, 50 μ1 of the paraffin mixture, and 50 μl of propylene glycol...
Authors
P.H. Albers
The chromosomes of the Didelphidae (Marsupialia) and their evolutionary significance The chromosomes of the Didelphidae (Marsupialia) and their evolutionary significance
One hundred and seventy-seven specimens of American didelphids, representing 9 genera and 22 species have been studied for their chromosomal constitution. Didelphids are very conservative in chromosomal complements. All of the studied species can be sorted into one of three kinds of karyotypes: 2n= 14 (three species of Didelphis, one of Lutreolina, two of Philander, and one of...
Authors
O. Reig, Alfred Gardner, N. O. Bianchi, James L. Patton
Mid-Atlantic coast osprey population: Present numbers, productivity, pollutant contamination, and status Mid-Atlantic coast osprey population: Present numbers, productivity, pollutant contamination, and status
An estimated 233 + 16 (95% C.I.) pairs of ospreys (Pandion haliaetus) nested in coastal New Jersey, Delaware, Maryland, and Virginia in 1975. The present populations were considerably smaller than those reported for selected locations at the turn of the century in these four states. The New Jersey population has continued to decline during the last 25 years, although it showed some signs...
Authors
Charles J. Henny, M. A. Byrd, J.A. Jacobs, P.D. McLain, M.R. Todd, B.F. Halla
Book review: The choice of prey and modes of hunting of predatory birds with special reference to their selective effect, by G. Rudebeck Book review: The choice of prey and modes of hunting of predatory birds with special reference to their selective effect, by G. Rudebeck
No abstract available.
Authors
N.F.R. Snyder
Light-footed clapper rail: The unknown endangered species Light-footed clapper rail: The unknown endangered species
No abstract available.
Authors
S.R. Wilbur
Birds of the Dismal Swamp, Virginia-North Carolina Birds of the Dismal Swamp, Virginia-North Carolina
No abstract available.
Authors
B. Meanley
A recovery plan for the eastern timber wolf A recovery plan for the eastern timber wolf
No abstract available.
Authors
L.D. Mech
A population analysis of two species of streamside salamanders, genus Desmognathus A population analysis of two species of streamside salamanders, genus Desmognathus
Desmognathus fuscus and Desmognathus ochrophaeus mere studied over a 6-wk period by mark-recapture and removal methods. Density is ~. 0.8/m2 in D. fuscus and 0.6 - l.l/m2 in D. ochrophaeus; respective biomass densities are 1.5 and 1.0 g/m2. Adjusted estimates indicate a greater proportion of adults in D. ochrophaeus. The observed sex ratio is unbalanced in favor of males but may be close...
Authors
R.J. Hall
California ospreys begin incubation at a frozen mountain lake California ospreys begin incubation at a frozen mountain lake
No abstract available.
Authors
Charles J. Henny