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
Residues of DDT and DDE in livers of waterfowl, northeastern Louisiana--1970-71 Residues of DDT and DDE in livers of waterfowl, northeastern Louisiana--1970-71
A study was conducted to determine the levels of DDT and DDE in the livers of 10 species of waterfowl collected in Louisiana from 1970 to 1971. Livers of 48 of 50 specimens contained detectable levels of DDT and/or DDE. DDT residues ranged from 0.01 to 10.90 ppm; DDE levels ranged from 0.02 to 38.69 ppm.
Authors
Donald H. White
Residues of organochlorines and heavy metals in ruddy ducks from the Delaware River, 1973 Residues of organochlorines and heavy metals in ruddy ducks from the Delaware River, 1973
In December 1973, eight ruddy ducks killed in an oil spill on the Delaware River were collected to be analyzed for residues of environmental pollutants. Whole carcasses were analyzed for organochlorine pesticides and livers were examined for lead, cadmium, and mercury. Residues of polychlorinated biphenyls and DDT and/or its metabolites were present in all carcasses. Dieldrin and...
Authors
Donald H. White, T. E. Kaiser
Chemical residue content and hatchability of screech owl eggs Chemical residue content and hatchability of screech owl eggs
Eggs of wild Screech Owls were collected from nests in northwestern Ohio in 1973. One egg was taken from each of 19 nests near the start of incubation. Mean shell thickness in these 19 eggs and mean thickness of 16 unhatched eggs did not differ from 49 archival eggs collected in Ohio and Pennsylvania prior to the widespread use of organochlorine pesticides. Residues were generally low...
Authors
Erwin E. Klaas, D. M. Swineford
Reproductive activity in nine- and ten-month-old wolves Reproductive activity in nine- and ten-month-old wolves
No abstract available.
Authors
D.C. Medjo, L.D. Mech
Influence of stimuli from populations of Peromyscus leucopus on maturation of young Influence of stimuli from populations of Peromyscus leucopus on maturation of young
The effects of stimuli associated with conspecific laboratory populations on parameters of sexual maturation in Peromyscus leucopus were examined. Beginning at birth, experimental litters were exposed to the constant infusion of urine, feces, and other material from the populations through a metabolism funnel into their cages. As evidenced by age at first vaginal estrus, experimental...
Authors
J.G. Rogers, G.K. Beauchamp
Establishment of the black-tailed jackrabbit on the Virginia eastern shore Establishment of the black-tailed jackrabbit on the Virginia eastern shore
No abstract available.
Authors
R. B. Clapp, J.S. Weske, T.C. Clapp
Some characteristics of fall migration of female woodcock Some characteristics of fall migration of female woodcock
Nine female woodcock (Philohela minor) were radio-tagged in central Pennsylvania before fall migration to monitor premigratory and migratory movements. Within 15 days of departure, 5 of the birds moved 0.8 to 8.0 km from their normally used area, but the remaining 4 did not move. In 1973 five marked woodcock began migration between 30 November and 8 December. In 1974, four birds departed...
Authors
R.A. Coon, P.D. Caldwell, G.L. Storm
A reward band study of mallards to estimate band reporting rates A reward band study of mallards to estimate band reporting rates
Reward bands ($10) were placed on 2,122 hatching-year mallards (Anas platyrhynchos), and an additional 11,490 received conventional bands (controls) to estimate band reporting rates. An analysis of band recoveries indicated that the reporting rate was dependent primarily upon three factors: (1) the distance banded birds were recovered from the banding site, (2) band collecting activities...
Authors
Charles J. Henny, K.P. Burnham
Delayed molt of primary feathers of mourning doves during winter Delayed molt of primary feathers of mourning doves during winter
During a study of the ecology of mourning doves (Zenaida macroura) in Jackson County, southwestern Oklahoma, we noted (Morrison and Lewis 1974) that the post juvenal molt of primary feathers progressed at a slower rate than is described in the literature (Jenkins 1955:23, Swank 1955, Southeastern Association of Game and Fish Commissioners 1957:102, Allen 1963, Hanson and Kossack 1963:82)...
Authors
J.W. Ault, V.J. Heller, J. C. Lewis, J.A. Morrison
[Book review] Potomac: The Nation's River, by Frank Graham, Jr [Book review] Potomac: The Nation's River, by Frank Graham, Jr
No abstract available.
Authors
C.S. Robbins
The California condor recovery plan The California condor recovery plan
No abstract available.
Authors
S.R. Wilbur