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Page 5952, results 148776 - 148800

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Mercury in eggs of aquatic birds, Lake St. Clair-1973
Rey C. Stendell, H. M. Ohlendorf, Erwin E. Klaas, J. B. Elder
1976, Pesticides Monitoring Journal (10) 7-9
Eggs from four species of aquatic birds inhabiting waterways of the Lake St. Clair region were collected in 1973 and analyzed for mercury. Species analyzed were mallard ducks (Anas platyrhynchos), common terns (Sterna hirundo), black-crowned night herons (Nycticorax nycticorax), and great egrets (Casmerodius albus). Mallard eggs contained relatively low residue...
Nationwide residues of organochlorines in wings of adult mallards and black ducks, 1972-73
Donald H. White, R.G. Heath
1976, Pesticides Monitoring Journal (9) 176-185
Organochlorine residues in wings of adult mallards and black ducks were monitored during the 1972-73 hunting season. DDE, DDT, DDD, dieldrin, and polychlorinated biphenyls (PCB's) were present in all samples. Mallard wings from Alabama contained the highest mean levels of DDE, DDT, DDD, dieldrin, and PCB's. Mallards and black ducks...
Nationwide residues of organochlorines in starlings, 1974
Donald H. White
1976, Pesticides Monitoring Journal (10) 10-17
Organochlorine residues in starlings (Sturnus vulgaris) from 126 collection sites were monitored during the fall of 1974. DDE, DDT, polychlorinated biphenyls (PCB's), and benzene hexachloride were present in all samples. Dieldrin, heptachlor expoxide, hexachlorobenzene, and oxychlordane were present in approximately 97% of the samples. DDE, dieldrin, and PCB residues in...
Thermal adaptiveness of plumage color in screech owls
James A. Mosher, Charles J. Henny
1976, The Auk (93) 614-619
Clinal variation in the relative proportions of red and gray plum- age phases in Screech Owls (Otus asio) was analyzed by Owen (1963) and Marshall (1967). This variation was well known prior to Owen's work, but was misinterpreted (Baird, et al. 1874, Hasbrouck 1893, Allen 1893).]Laurel VanCamp and Charles Henny...
Mapping wetlands on beaver flowages with 35-mm photography
R.E. Kirby
1976, Canadian Field-Naturalist (90) 423-431
Beaver flowages and associated wetlands on the Chippewa National Forest, north-central Minnesota, were photographed from the ground and from the open side window of a small high-wing monoplane. The 35-mm High Speed Ektachrome transparencies obtained were used to map the cover-type associations visible on the aerial photographs. Nearly vertical aerial...
Biochemical identification of the mallard, Anas platyrhynchos, and black duck, A. rubripes
R.P. Morgan II, L.A. Noe, Charles J. Henny
1976, Comparative Biochemistry and Physiology, Part B: Comparative Biochemistry (53) 499-503
1. Eleven tissue systems from mallards and black ducks were examined for soluble proteins, lactate dehydrogenases and non-specific esterases through discontinuous polyacrylamide techniques.2. Biochemical relationships between the black duck and mallard are extremely similar.3. Hemoglobins and lactate dehydrogenase appear to be common in electrophoretic mobility between the two species.4. Approximately...
Behavior of mallard ducklings from parents fed 3 ppm DDE
G. H. Heinz
1976, Bulletin of Environmental Contamination and Toxicology (16) 640-645
Mallard ducks fed a diet containing 3 ppm DDE (equal to about 0.6 ppm in a natural succulent diet) laid eggs that contained an average of 5.8 ppm DDE; ducklings that hatched from these eggs differed from controls in behavioral tests designed to measure responses to a maternal call and...