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Further studies on the use of enzyme profiles to monitor residue accumulation in wildlife: Plasma enzymes in starlings fed graded concentrations of morsodren, DDE, Aroclor 1254, and malathion
M. P. Dieter
1975, Archives of Environmental Contamination and Toxicology (3) 142-150
Wild-trapped starlings (Sturnus vulgaris) were fed concentrations of Morsodren (2, 4, and 8 ppm), DDE or Aroclor 1254 (5, 25, and 100 ppm), or malathion (8, 35, and 160 ppm) that were found to be sublethal in pen-reared Coturnix quail fed these amounts for 12 weeks. Plasma enzymes had to...
Brown pelicans: Improved reproduction off the southern California coast
D. W. Anderson, J.R. Jehl Jr., R.W. Risebrough, L.A. Woods Jr., L.R. DeWeese, W.G. Edgecomb
1975, Science (190) 806-808
Although still about 30 percent too low for population stability, productivity of California brown pelicans at their two northern colonies has improved significantly since 1971. Numbers of adults breeding probably reflect food supplies and recruitment from more successful colonies to the south, but improving fledging rates (up to 0.9 young...
Reproductive biology of the band-tailed pigeon in Colorado and New Mexico
R. J. Gutierrez, C.E. Braun, T.P. Zapatka
1975, The Auk (92) 665-677
Band-tailed pigeons (Columba fasciata) occur in two major populations in western North America, a coastal population (C. f. monilis) and an interior population (C. f. fasciata) (A.O.U. 1957). The interior population inhabits portions of Colorado, New Mexico, Arizona, Utah, Texas, and the highlands of Mexico. This pigeon is one of...
Impacts of chemicals on waterfowl reproduction and survival
Donald H. White, L.F. Stickel
1975, International Waterfowl Symposium (1) 132-142
Residues of organochlorine pesticides, PCB's, heavy metals, and other toxic chemicals are ubiquitous in the biosphere and are commonly found in tissues and eggs of wild birds. This paper reviews research on the effects of these chemicals, with particular reference to waterfowl. Extensive mortality of waterfowl has occurred...
Residues of organochlorine pesticides and polychlorinated biphenyls and autopsy data for bald eagles, 1971-72
E. Cromartie, W. L. Reichel, L. N. Locke, A. A. Belisle, T. E. Kaiser, T. G. Lamont, B.M. Mulhern, R. M. Prouty, D. M. Swineford
1975, Pesticides Monitoring Journal (9) 11-14
Thirty-seven bald eagles found sick or dead in 18 States during 1971-72 were analyzed for organochlorine pesticides and polychlorinated biphenyls (PCB's). DDE and PCB's were detected in all bald eagle carcasses; 30 carcasses contained DDD and 28 contained dieldrin. Four eagles contained possibly lethal levels of dieldrin and nine eagles...
Studies on combined effects of organophosphates and heavy metals in birds. I. Plasma and brain cholinesterase in Coturnix quail fed methyl mercury and orally dosed with parathion
M. P. Dieter, J. Larry Ludke
1975, Bulletin of Environmental Contamination and Toxicology (13) 257-262
We found that mercury potentiated the toxicity and biochemical effects of parathion. Male Coturnix quail (Coturnix coturnix japonica) were fed a sublethal concentration of morsodren (4 ppm as methyl mercury) for 18 weeks. This resulted in an accumulation of 21.0 ppm of mercury in the liver and 8.4 ppm in...