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
Cliff swallow, Hirundo pyrrhonota Cliff swallow, Hirundo pyrrhonota
No abstract available.
Authors
B.A. Dowell
A new Bephratelloides (Hymenoptera: Eurytomidae) from seeds of Cymbopetalum (Annonaceae) in Mexico A new Bephratelloides (Hymenoptera: Eurytomidae) from seeds of Cymbopetalum (Annonaceae) in Mexico
Bephratelloides ablusus Grissell and Foster, new species, is described and illustrated based upon specimens that emerged from seeds of Cymbopetalum mayanum (Annonaceae) in southern Mexico. This is the first species of Bephratelloides that is associated with a host other than Annona. Bephratelloides ablusus is compared with its congeners from which it differs in minor character states. No
Authors
E.E. Grissell, M.S. Foster
Predator management to protect endangered avian species Predator management to protect endangered avian species
No abstract available.
Authors
G.W. Witmer, J.L. Bucknall, T. H. Fritts, D.G. Moreno
Fregata minor, great frigatebird, in Oklahoma Fregata minor, great frigatebird, in Oklahoma
No abstract available.
Authors
J.S. Tomer, R. B. Clapp, J.C. Hoffman
Regional cholinesterase activity in white-throated sparrow brain is differentially affected by acephate (Orthene®) Regional cholinesterase activity in white-throated sparrow brain is differentially affected by acephate (Orthene®)
Effects of a 14-day dietary exposure to an organophosphorus pesticide, acephate (acetylphosphoramidothioic acid O,S-dimethyl ester), were determined on cholinesterase activity in three regions (basal ganglia, hippocampus, and hypothalamus) of the white-throated sparrow, Zonotrichia albicollis, brain. All three regions experienced depressed cholinesterase activity between 0.5–2 ppm...
Authors
N.B. Vyas, Wayne J. Kuenzel, E. F. Hill, G.A. Romo, M.V.S. Komaragiri
Description of adults, eggshells, nestling, fledgling, and nest of the poo-uli Description of adults, eggshells, nestling, fledgling, and nest of the poo-uli
The Poo-uli (Melamprosops phaeosoma), a Hawaiian honeycreeper discovered on the island of Maui in 1973 and now near extinction, is represented in museums by only two specimens. Based on the first observations of a nesting pair and re-examination of the two specimens, we describe the adult male and female, eggshells, nestling, and fledgling Poo-uli. Poo-uli are sexually monochromatic but...
Authors
A. Engilis, T.K. Pratt, C. B. Kepler, A.M. Ecton, K.M. Fluetsch
Nymphal survival and habitat distribution of Ixodes scapularis and Amblyomma americanum ticks (Acari:Ixodidae) on Fire Island, New York Nymphal survival and habitat distribution of Ixodes scapularis and Amblyomma americanum ticks (Acari:Ixodidae) on Fire Island, New York
The distribution and survival of Ixodes scapularis and Amblyomma americanum were studied in deciduous and coniferous wooded habitats and in open habitats on Fire Island, New York, USA. The survival of nymphal I. scapularis in field enclosures was greater in forests than in open habitats, suggesting that greater survival contributes to the higher tick population in the woods. The nymphs...
Authors
H. S. Ginsberg, E. Zhioua
First-time observer effects in the North American Breeding Bird Survey First-time observer effects in the North American Breeding Bird Survey
Currently the operational analysis of Breeding Bird Survey (BBS) data by the National Biological Service accounts for observer differences in estimating the trend for each route, but within-observer differences are not modeled. We tested for the existence of a form of within-observer differences in skill level, namely a change in ability to count birds of a given species after an...
Authors
W. L. Kendall, B.G. Peterjohn, J.R. Sauer
Interlaboratory study of precision: Hyalella azteca and Chironomus tentans freshwater sediment toxicity assays Interlaboratory study of precision: Hyalella azteca and Chironomus tentans freshwater sediment toxicity assays
Standard 10-d whole-sediment toxicity test methods have recently been developed by the U.S. Environmental Protection Agency (EPA) for the amphipod Hyalella azteca and the midge Chironomus tentans. An interlaboratory evaluation of method precision was performed using a group of seven to 10 laboratories, representing government, academia, and environmental consulting firms. The test...
Authors
G.A. Burton, T. J. Norberg-King, C.G. Ingersoll, D.A. Benoit, G.T. Ankley, P. V. Winger, J. Kubitz, J.M. Lazorchak, M.E. Smith, E. Greer, F.J. Dwyer, D.J. Call, K.E. Day, P. Kennedy, M. Stinson
Coexistence and community structure of tropical trees in a Hawaiian montane rain forest Coexistence and community structure of tropical trees in a Hawaiian montane rain forest
We measured the diameter at breast height of all trees and shrubs > 5 meters in height, including standing dead trees, on 68 0.04-hectare study plots in a montane, subtropical rain forest on Mauna Loa, Hawai`i. The canopy species consisted of 88 percent Metrosideros polymorpha (ohia) and 12 percent Acacia koa (koa). Negative associations were found between the densities of koa and ohia...
Authors
Jeff S. Hatfield, William A. Link, Deanna K. Dawson, E. L. Lindquist
Small mammal populations in Maryland meadows during four years of herbicide (brominal®) applications Small mammal populations in Maryland meadows during four years of herbicide (brominal®) applications
The herbicide Brominal® was applied at the recommended rate to one plot in each of three paired 0.6-ha plots; the other three plots were used as controls. Plots were sprayed once in the fall of 1988 and 1989 and twice in the spring of 1990 and 1991. Small mammals were trapped three times during each activity season (April-October) to obtain population estimates before and after spraying...
Authors
D. R. Clark, C.A. Moulton, J.E. Hines, D. J. Hoffman