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
Discrimination learning in adult bobwhite quail fed paraquat Discrimination learning in adult bobwhite quail fed paraquat
Adult male bobwhite quail (Colinus virginianus) were fed a diet containing 0, 25 or 100 ppm paraquat dichloride. After 60 d on treated diets, discrimination learning was evaluated with acquisition and reversal tests. The three groups performed similarly on these tests. Dose-related histopathological lesions were not found in liver, kidney or lung tissues.
Authors
C.M. Bunck, T.J. Bunck, L. Sileo
Mid-winter food use and body weights of mallards and wood ducks in Mississippi Mid-winter food use and body weights of mallards and wood ducks in Mississippi
We obtained esophageal food samples from 311 mallards (Anas platyrhynchos) and 94 wood ducks (Aix sponsa) and body weights from 2,118 mallards and 315 wood ducks in western Mississippi during December and January 1979-83. On average, mallards ingested 3.0% animal food, principally aquatic invertebrates, and 97.0% plant food. Rice, soybeans, and seeds of 'moist soil' plants provided 41.3...
Authors
Don Delnicki, K. J. Reinecke
Effects on fawn survival of multiple immobilizations of captive pregnant white-tailed deer Effects on fawn survival of multiple immobilizations of captive pregnant white-tailed deer
Fawn viability was tested in captive, pregnant white-tailed deer (Odocoileus virginianus) immobilized with xylazine hydrochloride and ketamine hydrochloride and reversed by yohimbine hydrochloride or tolazoline hydrochloride. Nine pregnant does were immobilized 10 times each from December 1984 to May 1985. Their mean parturition date was 8 June. The number of fawns produced per pregnant...
Authors
G. D. DelGiudice, L.D. Mech, W.J. Paul, Patrick D. Karns
Estimation of the proportion of an area occupied by an animal species Estimation of the proportion of an area occupied by an animal species
No abstract available.
Authors
P.H. Geissler, M.R. Fuller
Lead concentrations in bullfrog Rana catesbeiana and green frog R. clamitans tadpoles inhabiting highway drainages Lead concentrations in bullfrog Rana catesbeiana and green frog R. clamitans tadpoles inhabiting highway drainages
Lead concentrations were determined in sediment and tadpoles of bullfrogs Rana catesbeiana and green frogs R. clamitans from drainages along highways with different daily average traffic volumes (range, 4272 to I08,800 vehicles day-I) and from ponds >0.4 km from the nearest highway. Lead concentrations (mg kg--I dry weight) in sediment (7-8 to 940) were usually greater (4-5 times) than...
Authors
C.W. Birdsall, C.E. Grue, A. Anderson
Embryonic mortality and abnormalities of aquatic birds: Apparent impacts of selenium from irrigation drainwater Embryonic mortality and abnormalities of aquatic birds: Apparent impacts of selenium from irrigation drainwater
Severe reproductive impacts were found in aquatic birds nesting on irrigation drainwater ponds in the San Joaquin Valley of California. Of 347 nests studied to late incubation or to hatching, 40.6% had at least one dead embryo and 19.6% had at least one embryo or chick with an obvious external anomaly. The deformities were often multiple and included missing or abnormal eyes, beaks...
Authors
H. M. Ohlendorf, D. J. Hoffman, M. K. Saiki, Thomas W. Aldrich
The Breeding Bird Survey: Its first fifteen years, 1965-1979 The Breeding Bird Survey: Its first fifteen years, 1965-1979
The Breeding Bird Survey (BBS) is an ongoing cooperative program sponsored jointly by the U.S. Fish and Wildife Service and the Canadian Wildlife Service. Its main purpose is to estimate population trends of the many species of birds that nest in North America north of Mexico and that migrate across international boundaries. This survey provides information, both locally by ecological or...
Authors
C.S. Robbins, D. Bystrak, P.H. Geissler
Techniques for release of captive-reared masked bobwhite Techniques for release of captive-reared masked bobwhite
No abstract available.
Authors
D. H. Ellis
This week?s Citation Classic: 'Stickel, L. F. A comparison of certain methods of measuring ranges of small mammals. J. Mammalogy 35: 1-15, 1954.' This week?s Citation Classic: 'Stickel, L. F. A comparison of certain methods of measuring ranges of small mammals. J. Mammalogy 35: 1-15, 1954.'
During my first employment as a junior biologist conducting food habits analyses at the Patuxent Research Refuge (now Patuxent Wildlife Research Center) of the US Fish and Wildlife Service, the first station director, Arnold L. Nelson, gave each staff biologist the opportunity to spend a little time conducting field studies on the 2,600-acre research area. These studies were to help in...
Authors
L.F. Stickel