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
DDE in birds' eggs: Comparisons of two methods for estimating critical levels DDE in birds' eggs: Comparisons of two methods for estimating critical levels
The sample egg technique and eggshell thickness-residue regression analysis were comparatively evaluated as tools in estimating critical levels of DDE in birds? eggs that seriously affect reproductive successa nd population starts....In comparing critical values of DDE that were derived from the two methods, the estimates were lower using the sample egg technique for both the Brown...
Authors
L. J. Blus
Postmortem changes in liver weight of Japanese quail Postmortem changes in liver weight of Japanese quail
No abstract available.
Authors
J. Christian Franson
Avian artificial insemination and semen preservation Avian artificial insemination and semen preservation
No abstract available.
Authors
G.F. Gee
Avian endocrine responses to environmental pollutants Avian endocrine responses to environmental pollutants
Many environmental contaminants are hazardous to populations of wild birds. Chlorinated hydrocarbon pesticides and industrial pollutants are thought to be responsible for population declines of several species of predatory birds through eggshell thinning. Studies have demonstrated that these contaminants have estrogenic potency and may affect the functioning of the gonadal and thyroidal...
Authors
Barnett A. Rattner, V.P. Eroschenko, G.A. Fox, D.M. Fry, J. Gorsline
Phenotypic variation of the Mexican duck (Anas platyrhynchos diazi) in Mexico Phenotypic variation of the Mexican duck (Anas platyrhynchos diazi) in Mexico
A collection of 98 breeding Mexican Ducks (Anas platyrhynchos diazi) was made in Mexico from six areas between the United States border with Chihuahua and Lake Chapala, Jalisco, in order to study geographic variation. Plumage indices showed a relatively smooth clinal change from north to south; northern populations were most influenced by the Northern Mallard (A. platyrhynchos) phenotype
Authors
N.J. Scott, R.P. Reynolds
Turkey sighting on Keauhou Ranch, Volcano, Hawaii Turkey sighting on Keauhou Ranch, Volcano, Hawaii
No abstract available.
Authors
H.F. Sakai, J. M. Scott
Organochlorine residues in three heron species as related to diet and age Organochlorine residues in three heron species as related to diet and age
No abstract available.
Authors
K. R. Niethammer, T.S. Baskett, Donald H. White
Effects of the herbicide glyphosate on avian community structure in the Oregon coast range Effects of the herbicide glyphosate on avian community structure in the Oregon coast range
A study was conducted on vegetative changes induced by the herbicide glyphosate, and the resultant habitat use of birds nesting on two clearcuts in western Oregon. About 23 percent of total plant cover was initially damaged by aerial application of glyphosate. Most measures of vegetation on the treated site decreased relative to the untreated site 1 year after glyphosate application. By...
Authors
M.L. Morrison, E. Charles Meslow
Inheritance patterns of enzymes and serum proteins of mallard-black duck hybrids Inheritance patterns of enzymes and serum proteins of mallard-black duck hybrids
From 1974 to 1976, a breeding program was used to produce hybrids of black ducks and mallards for the evaluation of inheritance patterns of serum proteins and serum, liver and muscle enzymes. In addition to the crosses designed to produce hybrids, a series of matings in 1975 and 1976 were designed to evaluate inheritance patterns of a hybrid with either a black duck or mallard. At the F1...
Authors
R.P. Morgan, D. W. Meritt, S. B. Block, M.A. Cole, S. T. Sulkin, F.B. Lee, Charles J. Henny
Proper expression of metabolizable energy in avian energetics Proper expression of metabolizable energy in avian energetics
We review metabolizable energy (ME) concepts and present evidence suggesting that the form of ME used for analyses of avian energetics can affect interpretation of results. Apparent ME (AME) is the most widely used measure of food energy available to birds. True ME(TME) differs from AME in recognizing fecal and urinary energy of nonfood origin as metabolized energy. Only AME values...
Authors
M. R. Miller, K. J. Reinecke