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
Dieldrin and endrin residues in fulvous whistling-ducks in Texas in 1983 Dieldrin and endrin residues in fulvous whistling-ducks in Texas in 1983
Fulvous Whistling-Ducks were collected near nesting areas in the rice fields of Texas in 1983 to determine if these birds continue to carry residue levels of organochlorine contaminants, and if the contaminants were acquired in Texas or Mexico. Adults were collected immediately after they arrived from wintering grounds and juveniles were collected in late summer before their departure to...
Authors
Edward L. Flickinger, C. A. Mitchell, A. J. Krynitsky
Portable microcomputers for field collection of animal behavior data Portable microcomputers for field collection of animal behavior data
No abstract available.
Authors
Gary L. Hensler, S.S. Klugman, M.R. Fuller
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
Effect of anosmia on reproduction in male and female wolves (Canis lupus) Effect of anosmia on reproduction in male and female wolves (Canis lupus)
Anosmia was produced in two female and three male wolves by transection of the olfactory peduncle and was confirmed by their inability to detect meat, urine, feces, anal-gland secretions, and fish emulsion. All operated animals continued to investigate the environment with their noses, to interact normally with other pack members, and to feed at levels which maintained presurgical body...
Authors
C. S. Asa, U.S. Seal, E.D. Plotka, M.A. Letellier, L.D. Mech
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
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
Constant-parameter capture-recapture models Constant-parameter capture-recapture models
Jolly (1982, Biometrics 38, 301-321) presented modifications of the Jolly-Seber model for capture-recapture data, which assume constant survival and/or capture rates. Where appropriate, because of the reduced number of parameters, these models lead to more efficient estimators than the Jolly-Seber model. The tests to compare models given by Jolly do not make complete use of the data, and...
Authors
C. Brownie, J.E. Hines, J.D. Nichols
Range extension for the gray-backed tern in the western Pacific Range extension for the gray-backed tern in the western Pacific
About 75 pairs of Gray-backed Terns (Sterna lunata) nested on Guguan in the Northern Mariana Islands in 1979. This locality represents a breeding range extension of about 2000 km to the west of the westernmost previously known colony. The species is also reported for the first time from Uracas, northernmost of the Northern Mariana Islands, where it may also breed.
Authors
R. B. Clapp, J.J. Hatch
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
Developing a practical model to predict nesting habitat of woodland hawks Developing a practical model to predict nesting habitat of woodland hawks
No abstract available.
Authors
J. A. Mosher, K. Titus, M.R. Fuller