Sex and storage affect cholinesterase activity in blood plasma of Japanese quail
E. F. Hill
1989, Journal of Wildlife Diseases (25) 580-585
Freezing at -25?C had confounding effects on cholinesterase (ChE) activity in blood plasma from breeding female quail, but did not affect ChE activity in plasma from males. Plasma ChE activity of control females increased consistently during 28 days of storage while both carbamate- and cidrotophos-inhibited ChE decreased. Refrigeration...
Environmental contaminants, human disturbance and nesting of double-crested cormorants in northwestern Washington
Charles J. Henny, L. J. Blus, S.P. Thompson, U.W. Wilson
1989, Colonial Waterbirds (12) 198-206
Double-crested Cormorants (Phalacrocorax auritus) in extreme northwestern Washington produced few young (0.27/occupied nest) in 1984; the clutch size was generally small and eggs, if laid at all, were laid later than usual. Residues (geometric means, wet weight) of DDE (0.58 and 0.59 ppm) in eggs from Colville Island and Protection...
Brain cholinesterase activity of nestling great egrets, snowy egrets, and black-crowned night-herons
T. W. Custer, H. M. Ohlendorf
1989, Journal of Wildlife Diseases (25) 359-363
Inhibition of brain cholinesterase (ChE) activity in birds is often used to diagnose exposure or death from organophosphorus or carbmate pesticides. Brain ChE activity in the young of altricial species increase with age; however, this relationship has only been demonstrated in the European starling (Sturnus vulgaris). Brain ChE...
Browse diversity and physiological status of white-tailed deer during winter
G. D. DelGiudice, L.D. Mech, U.S. Seal
1989, Transactions of the North American Wildlife and Natural Resources Conference (54) 134-145
Subtle differences in available food resources and diet diversity of white-tailed deer can be monitored via chemical analysis of urine deposited in snow as winter progresses....
Translocation as a species conservation tool: Status and strategy
B. Griffith, J. M. Scott, J. W. Carpenter, C. Reed
1989, Science (245) 477-480
Surveys of recent (1973 to 1986) intentional releases of native birds and mammals to the wild in Australia, Canada, Hawaii, New Zealand, and the United States were conducted to document current activities, identify factors associated with success, and suggest guidelines for enhancing future work. Nearly 700 translocations were conducted each...
Monitoring contaminant exposure: Relative concentrations of organochlorines in three tissues of American black ducks
Susan D. Haseltine, Russell James Hall, Paul H. Geissler
1989, Environmental Monitoring and Assessment (13) 11-19
Comparison of organochlorine residues in wildlife must often be made to regulatory standards or to values of known biological significance; this is difficult when dissimilar tissues are analyzed and results are expressed on different bases. To relate levels in the different tissues used for regulatory and monitoring purposes and...
Pesticide contamination of endangered gray bats and their food base in Boone County, Missouri, 1982
R.L. Clawson, D. R. Clark Jr.
1989, Bulletin of Environmental Contamination and Toxicology (42) 431-437
Gray bat guano from Devil's Icebox and Hunters Caves contained dieldrin at levels previously associated with gray bat mortality. Two of four gray bats found dead in Holton Cave had lethal brain concentrations of dieldrin. Twenty-five of 28 (86%) insect samples from bat foraging areas contained measurable dieldrin,...
[Book review] The Birder's Handbook: A Field Guide to the Natural History of North American Birds by Paul R. Ehrlich, David S. Dobkin, and Darryl Wheye
C.S. Robbins
1989, The Quarterly Review of Biology (64) 211
Problems associated with incubation and hatching
Glenn H. Olsen
1989, Association of Avian Veterinarians Proceedings (1998) 262-267
There are numerous problems in incubation and hatching that can result in a dead embryo. Many of these problems can be prevented if the proper diagnosis of embryo mortality is made and the client instructed on how to prevent the probem in the future. This session is designed...
Interactions of wolves and dogs in Minnesota
S. H. Fritts, W.J. Paul
1989, Wildlife Society Bulletin (17) 121-123
This article reports on the nature and extent of wolf-dog interactions in Minnesota, based on investigations of complaints received by personnel of the federal government dealing with wolf-depredation control. Findings may indicate the wolf-dog interactions that can be expected in other recovery areas....
Wildlife management and the pet bird trade
Glenn H. Olsen
1989, Association of Avian Veterinarians Proceedings (1989) 182
Responses to human intruders by birds nesting in colonies: Experimental results and management guidelines
R.M. Erwin
1989, Colonial Waterbirds (12) 104-108
Colonies of nesting wading birds and seabirds were studied at coastal sites in Virginia and North Carolina to determine distances at which birds flushed in response to human intrusion. There were few statistically significant relationships between flushing distances and colony size. Similarly, there were few differences between responses...
Pesticide residues in Arizona peregrine falcon eggs and prey
D. H. Ellis, L.R. DeWeese, T.G. Grubb, L.F. Kiff, D.G. Smith, Walter M. Jarman, David B. Peakall
1989, Bulletin of Environmental Contamination and Toxicology (42) 57-64
No abstract available....
Avian respiratory system disorders
Glenn H. Olsen
1989, Association of Avian Veterinarians Proceedings (1989) 433-435
Diagnosing and treating respiratory diseases in avian species requires a basic knowledge about the anatomy and physiology of this system in birds. Differences between mammalian and avian respiratory system function, diagnosis, and treatment are highlighted....
Predator-prey interactions, resource depression and patch revisitation
R.M. Erwin
1989, Behavioural Processes (18) 1-16
Generalist predators may be confronted by different types of prey in different patches: sedentary and conspicuous, cryptic (with or without refugia), conspicuous and nonsocial, or conspicuous and social. I argue that, where encounter rates with prey are of most importance, patch revisitation should be a profitable tactic where...
A historical review of peregrine falcon breeding and summering records for Arizona and the Navajo Indian Reservation
D. H. Ellis, G. Monson
1989, Southwestern Naturalist (34) 565-569
This is a historical review of peregrine falcon breeding and summering records for Arizona and the Navajo Indian Reservation...
[Book review] A Dictionary of Ethology by Klaus Immelmann and Colin Beer
D. H. Ellis, L.J. Miller
1989, Journal of Raptor Research (23) 186
The decline of an adaptation in the absence of a presumed selection pressure
A. Cruz, James W. Wiley
1989, Evolution (43) 55-62
The colonial nesting Village Weaver (Ploceus cucullatus) lays eggs that vary in ground color and pattern, but individual females lay similar eggs each time. Tests on captive African stocks have shown that females reject eggs of other cohorts if such eggs are sufficiently different. The Village Weaver may have evolved...
Avian community response to small-scale habitat disturbance in Maine
E.L. Derleth, D.G. McAuley, T.J. Dwyer
1989, Canadian Journal of Zoology (67) 385-390
The effects of small clearcuts (1 - 8 ha) on avian communities in the forest of eastern Maine were studied using point counts during spring 1978 - 1981. Surveys were conducted in uncut (control) and clear-cut (treatment) plots in three stand types: conifer, hardwood, and mixed growth. We...
Trapping Boiga irregularis on Guam using bird odors
T. H. Fritts, N.J. Scott Jr., B.E. Smith
1989, Journal of Herpetology (23) 189-192
No abstract available....
Two new mammals from southern Venezuela and comments on the affinities of the highland fauna of Cerro de la Neblina
A. L. Gardner
1989, Advances in Neotropical Mammalogy (1989) 411-424
[Book review] Soft paths: How to Enjoy the Wilderness Without Harming It by Bruce Hampton and David Cole
J. L. Marion
1989, Park Science (9) 21
Two new species of South American Centrorlenella (Anura: Centrolenidae) related to C. Mariae
G. Flores, R.W. McDiarmid
1989, Herpetologica (45) 401-411
Two new Centrolenella are described, C. azulae from the Cordillera Azul of Peru, and C. puyoensis from the Amazonian slopes of the Ecuadorian Andes. Centrolenella azulae is distinguished by its moderately large size, the presence of vomerine teeth, a snout truncate in dorsal view and slightly protruding in profile, a...
Observations of predation by red imported fire ants on live-trapped wild cotton rats
Edward L. Flickinger
1989, Texas Journal of Science (41) 223-224
Organochlorine contaminants in white-faced ibis eggs in southern Texas
T. W. Custer, C. A. Mitchell
1989, Colonial Waterbirds (12) 126-129
White-faced ibis eggs collected from 2 colonies in southern Texas in 1985 had low mean concentrations of DDE. DDD, the only other organochlorine contaminant detected, was found in only 1 of 20 eggs. DDE concentrations in eggs were not significantly correlated with eggshell thickness. Mean DDE concentrations were...
