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Page 5277, results 131901 - 131925

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Toxicity of dietary lead in young cockerels
J. Christian Franson, Thomas W. Custer
1982, Veterinary and Human Toxicology (24) 421-423
Day-old cockerels received 1850 ppm dietary lead for 4 wks. Blood delta-aminolevulinic acid dehydratase (ALAD) activity was reduced to 1.6% of control activity by the end of the study. Hemoglobin concentration (Hb) in lead-exposed cockerels was significantly less than that of controls at 7, 14, and 28 days,...
Organochlorine residues in bats after a forest spraying with DDT
Charles J. Henny, Chris Maser, John O. Whitaker Jr., T. Earl Kaiser
1982, Northwest Science (56) 329-337
Background levels of DDT and its metabolites (ZDDT) were extremely low or not detected in five species of forest-dwelling bats in northeastern Oregon, i.e., areas not sprayed with DDT in 1974. Other organochlorine pesticides were rarely found and no polychlotinated biphenyls (PCBs) were detected at any time during the study....
Migratory peregrine falcons, Falco peregrinus, accumulate pesticides in Latin America during winter
Charles J. Henny, F.P. Ward, K.E. Riddle, R. M. Prouty
1982, Canadian Field-Naturalist (96) 333-338
Blood samples from 433 Peregrine Falcons (Falco peregrinus) during fall and spring migrations, 1976-80, indicated that most of their pesticide burden, primarily DDE, was accumulated on wintering grounds in Latin America. DDE in spring migrants returning from Latin America for the first time declined significantly from 1979 to 1980. Only...
Responses of the iguanid lizard Anolis carolinensis to four organophosphorus pesticides
R.J. Hall, D. R. Clark Jr.
1982, Environmental Pollution (Series A) (28) 45-52
Dose related mortality and cholinesterase effects of parathion, methyl parathion, azinphos-methyl and malathion on Anolis carolinensis were investigated. The comparative effects of the four compounds on fish, birds and mammals are well known, but the effects of organophosphates on reptiles have not been studied critically. Sensitivity and patterns of mortality from exposure...
Inclusion body hepatitis in kestrels (Falco sparverius)
L. Sileo, J. C. Franson, D.L. Graham, C.H. Domermuth, Barnett A. Rattner, O. H. Pattee
1982, Conference Paper, Wildlife Disease Association Conference Proceedings
Inclusion body disease of suspected adenovirus etiology was the apparent cause of death of 9 captive kestrels (Falco sparverius). Cloacal hemorrhage was the only prominent gross lesion; disseminated hepatocellular necrosis and intranuclear inclusion bodies were evident microscopically. Attempts to reproduce the disease, and to propagate and serologically characterize...
Nesting by one-year-old black-crowned night herons on Hope Island, Rhode Island
Thomas W. Custer, William E. Davis Jr.
1982, The Auk (99) 784-786
There have been few consistent reports concerning the frequency and success of nesting attempts by immature night herons of the genus Nycticorax. One- year-old Black-crowned Night Herons (Nycticorax nycticorax) mated to 2-yr-old or older birds built nests and incubated eggs in the wild (Gross 1923). In a captive colony, many...
Observer variability in estimating numbers: An experiment
R.M. Erwin
1982, Journal of Field Ornithology (53) 159-167
Census estimates of bird populations provide an essential framework for a host of research and management questions. However, with some exceptions, the reliability of numerical estimates and the factors influencing them have received insufficient attention. Independent of the problems associated with habitat type, weather conditions, cryptic coloration, ete.,...
Estimating reproductive success in colonial waterbirds: An evaluation
R.M. Erwin, T. W. Custer
1982, Colonial Waterbirds (5) 49-56
To estimate reproductive success in a population one ideally would like to determine the number of young fledged per nesting female. However, this is difficult because often (1) the adults are not individually marked, (2) the colony is not visited daily, and (3) the investigator is unable to monitor...
Organophosphate inhibition of avian salt gland Na, K-ATPase activity
W. C. Eastin Jr., W. James Fleming, H. C. Murray
1982, Comparative Biochemistry and Physiology, Part C: Comparative Pharmacology (73) 101-107
1. Adult black ducks (Anas rubripes) were given freshwater or saltwater (1.5% NaCl) for 11 days and half of each group was also given an organophosphate (17 p.p.m. fenthion) in the diet on days 6–11.2. After 11 days, ducks drinking saltrwater had lost more weight and had higher plasma Na...
Effects of a chemical dispersant and crude oil on breeding ducks
P.H. Albers, M. L. Gay
1982, Bulletin of Environmental Contamination and Toxicology (29) 404-411
Effects of chemically dispersed crude oil on mallard reproduction. Incubating female mallards were exposed to a water source treated with either Prudhoe Bay crude oil, Corexit 9527, or a combination of oil and dispersant during the first 10 da of development. Used thermocouple probes to monitor incubation temperature....
Ecology of avian brood parasitism at an early interfacing of host and parasite populations
J. W. Wiley
1982, Dissertation Abstracts International (43) 973-B(abs)
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...
Inorganic and organic mercury chloride toxicity to Coturnix: Sensitivity related to age and quantal assessment of physiologic responses
E. F. Hill
1982, Dissertation Abstracts International (43) 57B-58B(abs)
The toxicities of mercuric chloride (HgCl(,2)) and methylmercuric chloride (CH(,3)HgCl) were compared for coturnix (Coturnix coturnix japonica) from hatching to adulthood. Comparisons were based on: (1) Median lethal dosages (LD50) derived by administering single peroral and single intramuscular dosages of mercury, (2) median lethal concentrations (LC50) derived by feeding mercury...
Further interpretation of the relation of organochlorine residues in brown pelican eggs to reproductive success
L. J. Blus
1982, Environmental Pollution (Series A) (28) 15-33
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...