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Page 4280, results 106976 - 107000

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Tantilla bocourti
R.W. McDiarmid, S.H. Folke
1991, Catalogue of American Amphibians and Reptiles (526) 1-3
Seroepidemiology of leptospirosis in Minnesota wolves
M.A. Khan, S.M. Goyal, S.L. Diesch, L.D. Mech, S. H. Fritts
1991, Journal of Wildlife Diseases (27) 248-253
Serum samples (n = 457) from wolves (Canis lupus) in northern Minnesota were collected from 1972 through 1986 and were tested for antibodies against Leptospira interrogans using a microtiter agglutination test. Twelve serovars included in the study were: australis, autumnalis, ballum, bataviae, bratislava, canicola, copenhageni, grippotyphosa, hardjo, pomona, pyrogenes, and...
Accumulation of trace elements and organochlorines by surf scoters wintering in the Pacific northwest
Charles J. Henny, L. J. Blus, R. A. Grove, S.P. Thompson
1991, Northwestern Naturalist (72) 43-60
Selenium, cadmium, mercury, copper, manganese, zinc, aluminum, lead, PCBs and DDE were accumulated by segments of the surf scoter (Melanitta perspicillata) population that winters in the Pacific Northwest, but whether the uptake occurred on breeding and/or wintering grounds was uncertain for some contaminants. Surf scoters collected in Puget Sound and...
Factors affecting winter distribution and migration distance of wood ducks from southern breeding populations
Gary R. Hepp, J.E. Hines
1991, Condor (93) 884-891
We used direct band-recovery records of Wood Ducks (Aix sponsa) banded 1 April-15 September (1960-1987) in the southern and southeastern reference areas of Bowers and Martin (1975) to test whether winter distribution and migration distance were age- and sex-specific. Effects of variation in early-autumn temperature and precipitation conditions on winter...
Testing the Wildlink activity-detection system on wolves and white-tailed deer
K. E. Kunkel, Richard C. Chapman, L.D. Mech, E.M. Gese
1991, Canadian Journal of Zoology (69) 2466-2469
We tested the reliability and predictive capabilities of the activity meter in the new Wildlink Data Acquisition and Recapture System by comparing activity counts with concurrent observations of captive wolf (Canis lupus) and free-ranging white-tailed deer (Odocoileus virginianus) activity. The Wildlink system stores activity data in a computer within...
Introgression of coyote mitochondrial DNA into sympatric North American gray wolf populations
Niles Lehman, Andrew Eisenhawer, Kimberly Hansen, L. David Mech, Rolf O. Peterson, Peter J.P. Gogan, Robert K. Wayne
1991, Evolution (45) 104-119
Mitochondrial DNA (mtDNA) genotypes of gray wolves and coyotes from localities throughout North America were determined using restriction fragment length polymorphisms. Of the 13 genotypes found among the wolves, 7 are clearly of coyote origin, indicating that genetic transfer of coyote mtDNA into wolf populations has occurred through hybridization. The...
Movements and survival of American black duck and mallard broods on Chesapeake Bay
D.G. Krementz, G.W. Pendleton
1991, Proceedings of the Annual Conference of the Southeastern Association of Fish and Wildlife Agencies (45) 156-166
We attached radio transmitters to day-old American black duck (Anas rubripes) and mallard (A. platyrhynchos) ducklings and monitored duckling habitat use, brood movements, and survival rates for 30 days. Ducklings moved an average of 2.3 km within the first 24 hours and another 1.5 km thereafter. After the initial move,...
Estimates of movement and site fidelity using mark-resight data of wintering Canada geese
J.B. Hestbeck, J.D. Nichols, R.A. Malecki
1991, Ecology (72) 523-533
Population ecologists have devoted disproportionate attention to the estimation and study of birth and death rates and far less effort to rates of movement. Movement and fidelity to wintering areas have important ecological and evolutionary implications for avian populations. Previous inferences about movement among and fidelity to wintering areas have...
Atmospheric organochlorine pollutants and air-sea exchange of hexachlorocyclohexane in the Bering and Chukchi Seas
D.A. Hinckley, T.F. Bidleman, C.P. Rice
1991, Journal of Geophysical Research (96) 7201-7213
Organochlorine pesticides have been found in Arctic fish, marine mammals, birds, and plankton for some time. The lack of local sources and remoteness of the region imply long-range transport and deposition of contaminants into the Arctic from sources to the south. While on the third Soviet-American Joint Ecological...
Poisoning of Canada geese in Texas by parathion sprayed for control of Russian wheat aphid
Edward L. Flickinger, Gary Juenger, Thomas J. Roffe, Milton R. Smith, Roy J. Irwin
1991, Journal of Wildlife Diseases (27) 265-268
Approximately 200 Canada geese (Branta canadensis) died at a playa lake in the Texas Panhandle shortly after a winter wheat field in the basin adjacent to the lake was treated with parathion to control newly invading Russian wheat aphids (Diuraphis noxia). No evidence of infectious disease was diagnosed during necropsies...
Subchronic hepatotoxicity of selenomethionine ingestion in mallard ducks
D. J. Hoffman, G. H. Heinz, L. J. LeCaptain, C.M. Bunck, D. E. Green
1991, Journal of Toxicology and Environmental Health (32) 449-464
Twoyearold male mallards (Anas platyrhynchos) received a control diet (0.2 ppm Se) or diets containing 1, 2, 4, 8, 16, or 32 ppm Se as selenomethionine for 14 wk. Se accumulated readily in the liver in a dosedependent manner, reaching a mean concentration of 29 ppm (wet weight) in the...
Observations at convergent margins concerning sediment subduction, subduction erosion, and the growth of continental crust
Roland E. von Huene, D.W. Scholl
1991, Reviews of Geophysics (29) 279-316
At ocean margins where two plates converge, the oceanic plate sinks or is subducted beneath an upper one topped by a layer of terrestrial crust. This crust is constructed of continental or island arc material. The subduction process either builds juvenile masses of terrestrial crust through arc volcanism or new...
Demography and natural history of the common fruit bat, Artibeus jamaicensis, on Barro Colorado Island, Panama
1991, Smithsonian Contributions to Zoology No. 511
Bats were marked and monitored on Barro Colorado Island, Panama, to study seasonal and annual variation in distribution, abundance, and natural history from 1975 through 1980. Data gathered advances our knowledge about flocking; abundance; feeding strategies; social behavior; species richness; population structure and stability; age and sex ratios; life expectancy...
Use of Wetland Habitats by Selected Nongame Water Birds in Maine
J.P. Gibbs, J. R. Longcore, D.G. McAuley, J.K. Ringelman
1991, Fish and Wildlife Research No. 9
We examined the use of 87 palustrine and lacustrine wetlands by nongame water birds in central and eastern Maine using 3,527 h of observation (1,501 visits) made during April-August, 1977-85. Wetlands used by 15 species of water birds were distinguished from those not used, according to 20 habitat features. The...