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
Endrin decreases screech owl productivity Endrin decreases screech owl productivity
No abstract available.
Authors
W. James Fleming, M. Anne Ross McLane, Eugene Cromartie
Organochlorine residues and shell thinning in Oregon seabird eggs Organochlorine residues and shell thinning in Oregon seabird eggs
A single egg was collected at 62 nests of 10 seabird species from Oregon in 1979. The eggs were analyzed for organochlorine contaminants; contemporary shell thickness was compared with eggshells collected during earlier time periods. Concentrations of DDE and PCB's in 1979 were generally low with the most contaminated species being the Double-crested Cormorant (Phalacrocorax auritus)...
Authors
Charles J. Henny, Lawrence J. Blus, Richard M. Prouty
Accumulation of 14C-naphthalene in the tissues of redhead ducks fed oil-contaminated crayfish Accumulation of 14C-naphthalene in the tissues of redhead ducks fed oil-contaminated crayfish
Crayfish, artificially contaminated with14C-naphthalene-5% water-soluble fraction of No. 2 fuel oil, were force-fed to one-year-old redhead ducks to determine the accumulation of petroleum hydrocarbons. The relative distribution of carbon-14 activity in the gall bladder containing bile, and fat were similar, and significantly greater (P 0.05) than the activity in the blood, brain, liver...
Authors
I. Barry Tarshis, Barnett A. Rattner
Use of blood levels to infer carcass levels of contaminants Use of blood levels to infer carcass levels of contaminants
Inferences may be made about the carcass levels of a contaminant based on the contaminant level in blood samples. A method is given for comparing such populations that utilizes bivariate normal distributions and their principal axes, thereby avoiding a dilemma arising from the use of regression techniques. Confidence intervals and power calculations are given. Data from captive barn owls...
Authors
Gary L. Hensler, William C. Stout
Ingestion of petroleum by breeding mallard ducks: Some effects on neonatal progeny Ingestion of petroleum by breeding mallard ducks: Some effects on neonatal progeny
Breeding female mallard ducks consuming petroleum-contaminated food show significant induced increases in the naphthalene-metabolizing properties of microsomes prepared from their livers. Food contaminated with South Louisiana crude oil was more potent than food contaminated with similar concentrations of Prudhoe Bay crude oil and in each instance food contaminated with 3% (v/w) induced...
Authors
J. Gorsline, W. N. Holmes
Effects of lindane, paraquat, toxaphene, and 2,4,5-trichlorophenoxyacetic acid on mallard embryo development Effects of lindane, paraquat, toxaphene, and 2,4,5-trichlorophenoxyacetic acid on mallard embryo development
The effects were determined of externally treating mallard (Anas platyrhynchos) eggs with two insecticides (lindane and toxaphene) and two herbicides (paraquat and 2,4,5-T) with formulations and concentrations similar to field applications. Paraquat was the most embryotoxic of the four compounds regardless of the type of vehicle. The LC50 for paraquat was 1.5 lb of active ingredient/...
Authors
David J. Hoffman, W. C. Eastin
Puerto Rican parrot recovery program shows progress Puerto Rican parrot recovery program shows progress
No abstract available.
Authors
J. W. Wiley
Reduced mortality among young endangered masked bobwhite quail fed oxytetracycline-supplemented diets Reduced mortality among young endangered masked bobwhite quail fed oxytetracycline-supplemented diets
Two experiments were conducted to examine the effect of oxytetracycline-supplemented diets on mortality of young endangered masked bobwhite quail (Colinus virginianus ridgwayi). Inclusion of oxytetracycline at 200 g per ton in the feed for 6 weeks resulted in a marked, significant reduction in mortality of young masked bobwhite quail raised in captivity. Including the antibiotic in feed...
Authors
John A. Serafin
Records of redhead x canvasback hybrids Records of redhead x canvasback hybrids
No abstract available.
Authors
G.M. Haramis
Further interpretation of the relation of organochlorine residues in brown pelican eggs to reproductive success Further interpretation of the relation of organochlorine residues in brown pelican eggs to reproductive success
This study was conducted to provide additional interpretation of the relation of organochlorine pollutants to reproductive success and population stability of brown pelicans Pelecanus occidentalis in the southeastern United States from 1969 to 1977. The sample egg technique was employed in South Carolina; it involved collecting an egg from each of 156 marked nests, analysing the eggs for...
Authors
L. J. Blus
Ecology of avian brood parasitism at an early interfacing of host and parasite populations Ecology of avian brood parasitism at an early interfacing of host and parasite populations
The shiny cowbird (Molothrus bonariensis), a brood parasite, has recently spread into the Greater Antilles from South America via the Lesser Antilles. This species is a host generalist and upon reaching Puerto Rico exploited avian communities with no history of social parasitism. Forty-two percent of the resident non-raptorial land bird species were parasitized in mangrove habitat study...
Authors
J. W. Wiley