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Page 5863, results 146551 - 146575

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Not all publications have extents, not all extents are completely accurate
DDE increased the toxicity of parathion to coturnix quail
J. Larry Ludke
1977, Pesticide Biochemistry and Physiology (7) 28-33
Adult male Japanese quail (Coturnix coturnix) were exposed to DDE or chlordane in the diet and subsequently dosed with parathion or paraoxon. Pretreatment with 5 or 50 ppm DDE in the diet for 12 weeks resulted in increased cholinesterase (ChE) activity in plasma, but not in the brain. Dietary concentrations...
Effects of DDE on experimentally poisoned free-tailed bats (Tadarida brasiliensis): Lethal brain concentrations
D. R. Clark Jr., J.C. Kroll
1977, Journal of Toxicology and Environmental Health (3) 893-901
Adult female free-tailed bats (Tadarida brasiliensis) were collected at Bracken Cave, Texas, and shipped to the Patuxent Wildlife Research Center. Treated mealworms (Tenebrio molitor) containing 107 ppm DDE were fed to 17 bats; five other bats were fed untreated mealworms. After 40 days on dosage, during which one dosed bat...
Experimental feeding of DDE and PCB to female big brown bats (Eptesicus fuscus)
D. R. Clark Jr., R. M. Prouty
1977, Journal of Toxicology and Environmental Health (2) 917-928
Twenty-two female big brown bats (Eptesicus fuscus) were collected in a house attic in Montgomery County, Maryland. Seventeen were fed mealworms (Tenebrio molitor larvae) that contained 166 ppm DDE; the other five were fed uncontaminated mealworms. After 54 days of feeding, six dosed bats were frozen and the remaining 16...
Photo-optical enhancement of landsat imagery for land use in south-central Iowa
James R. Lucas, James V. Taranik, Frederic C. Billingsley
1977, Report
Because the photographic laboratory at the Jet Propulsion Laboratory found it difficult to estimate what were the optimal color renditions of the Iowa landscape for land classification purposes, the Iowa Geological Survey developed its own capability for producing color products from digitally enhanced Landsat data. Research has now shown that...
Status, distribution, and movements of martens in northeastern Minnesota
L.D. Mech, L.L. Rogers
1977, Research Paper NC-143
The decline of martens in Minnesota is reviewed and a recent increase documented. Adjacent and partially overlapping home ranges of 4.3 to 19.9 sq km were determined by telemetry for a female and three males. Habitat use is described. If current trapping and timber management practices persist, martens should continue...
Role of the wolf in a deer decline in the Superior National Forest
L.D. Mech, Patrick D. Karns
1977, Research Paper NC-148
White-tailed deer (Odocoileus virginianus) declined in the Superior National Forest of Minnesota between 1968 and 1974. In a 3,000 sq km area of the poorest habitat, deer were decimated. Contributing factors were severe winters, deteriorating habitat, and wolves. Wolves killed older deer, but insufficient fawns were available to replace them....
Hawaiian Bird Bibliography
K. W. Bridges, M.S. Bridges, W.E. Banko
1977, Cooperative National Park Resources Studies Unit, Technical Report 14.
The current status of woodcock and woodcock surveys in the United States
J. Tautin
Daniel M. Keppie, Ray B. Owen Jr., editor(s)
1977, Book chapter, Proceedings of the Sixth Woodcock Symposium, held at Fredericton, New Brunswick, October 4, 5 and 6
A comparison of American woodcock (Philohela minor) wing collection survey data for 1975-76 and 1976-77 showed that there was little change in the indices to breeding success and hunter success between years in the Atlantic and Central regions. The 1977 breeding population index was up 15.2 percent from 1976 in...
Feeding habits
A. L. Gardner
Robert J. Baker, J. Knox Jones Jr., Dilford C. Carter, editor(s)
1977, Book chapter, Biology of bats of the New World family Phyllostomatidae. Part II
Research, management, and status of the osprey in North America
Charles J. Henny
R.D. Chancellor, editor(s)
1977, Book chapter, World Conference on Birds of Prey, Vienna, 1-3 October, 1975. Report of Proceedings
Osprey populations were studied throughout North America during the last decade as a result of dramatic declines reported along the North Atlantic Coast in the1950s and early 1960s. Researchers used banding, localized studies, aerial surveys, and pesticide analyses to identify factors influencing regional populations. Declining populations showed extremely...
Identification of potential harvest units in the United States of the American woodcock
R.A. Coon, T.J. Dwyer, J.W. Artmann
Daniel M. Keppie, Ray B. Owen Jr., editor(s)
1977, Book chapter, Proceedings of the Sixth Woodcock Symposium, held at Fredericton, New Brunswick, October 4, 5 and 6
Potential harvest units were examined in the United States for American woodcock (Philohela minor) based on the distribution of both direct and indirect recoveries of preseason bandings. Unweighted and weighted recoveries were used to definefour sets of units with a minimal interchange of birds. With a configuration that...
Woodcock utilization of commercial timberlands in the northeast
C.P. Nicholson, S. Homer, Ray B. Owen, T.G. Dilworth
1977, Book chapter, Proceedings of the Sixth Woodcock Symposium, held at Fredericton, New Brunswick, October 4, 5 and 6
This paper reports the results of studies in Maine (1975-77) and New Brunswick (1974) on the utilization of commercial timber areas by woodcock (Philohela minor). Openings created by logging operations were utilized for singing grounds and nocturnal roosting habitat. Singing male densities of 3.4 birds/1oo ha on were...