Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16795
Effect of hunting on annual survival of grey ducks in New Zealand
We used band recovery data from grey ducks (Anas superciliosa) banded in New Zealand between 1957 and 1974 to test 2 null hypotheses: (1) hunting mortality is completely additive to natural sources of mortality, and (2) hunting mortality is completely compensated by changes in natural mortality. We modeled annual survival as a function of survival in the absence of hunting and the probability of d
Authors
R. J. Barker, J. E. Hines, J. D. Nichols
Approaches to the conservation of coastal wetlands in the Western Hemisphere
Coastal wetlands rank among the most productive and ecologically valuable natural ecosystems on Earth. Unfortunately, they are also some of the most disturbed. Because they are productive and can serve as transportation arteries, coastal wetlands have long attracted human settlement. More than half of the U.S. population currently lives within 80 km of its coasts, and one estimate places 70% of al
Authors
K.L. Bildstein, G.T. Bancroft, P.J. Dugan, D.H. Gordon, R.M. Erwin, E. Nol, L.X. Payne, Stanley E. Senner
Multifragment alleles in DNA fingerprints of the parrot, Amazona ventralis
Human DNA probes that identify variable numbers of tandem repeat loci are being used to generate DNA fingerprints in many animal and plant species. In most species the majority of the sc rable autoradiographic bands of the DNA fingerprint represent alleles from numerous unlinked loci. This study was initiated to use DNA fingerprints to determine the amount of band-sharing among captive Hispaniolan
Authors
M.K. Brock, B.N. White
Satellite monitors cranes migrating from Siberia
No abstract available.
Authors
D. H. Ellis, U. Markin
Semen collection and artificial insemination in the Hispaniolan parrot (Amazona ventralis)
No abstract available.
Authors
M.K. Brock
Validation of estimating food intake in gray wolves by 22Na turnover
We studied 22sodium (22Na) turnover as a means of estimating food intake in 6 captive, adult gray wolves (Canis lupus) (2 F, 4 M) over a 31-day feeding period. Wolves were fed white-tailed deer (Odocoileus virginianus) meat only. Mean mass-specific exchangeable Na pool was 44.8 .+-. 0.7 mEq/kg; there was no differeence between males and females. Total exchangeable Na was related (r2 = 0.85, P < 0
Authors
G. D. DelGiudice, L.S. Duquette, U. S. Seal, L. D. Mech
Bats, cyanide, and gold mining
Although the boom days of prospectors and gold nuggets are long gone, modern technology enables gold to continue to be extracted from ore. Unfortunately, the extraction method has often been disastrous for bats and other wildlife, an issue I first became aware of in early 1989. Phone calls from Drs. Merlin Tuttle and Elizabeth Pierson, a BCI member and bat researcher from Berkeley, California, ale
Authors
Donald R. Clark
Cytochrome P450 induction in mallard duck (MD), black-crowned night heron (BCNH) and Fisher-344 rat
P450 induction was studied in adult and pipping MDs, pipping BCNHs, and rats. Adult MDs and rats received i.p. injection of corn oil, 3-methylcholanthrene (MC) in corn oil (20 mg/kg), saline or phenobarbital (PB) in saline (80 mg/kg) for 3 days. MD and BCNH embryos received MC and PB by injection into the aircell approximately 2 days before pipping and were sacrificed at pipping. Hepatic microsome
Authors
M. J. Melancon, Barnett A. Rattner, John J. Stegeman
Monooxygenase activity and contaminant burdens of pipping heron embryos in Virginia, the Great Lakes and San Francisco Bay
Black-crowned night-heron (Nvcticorax nvcticorax) pipping embryos were studied from undisturbed (Chincoteague National Wildl ife Refuge, VA) and industrialized (Cat Island, Green Bay WI, and Bair and W. Marin Islands, San Francisco Bay, CA) locations. Hepatic aryl hydrocarbon hydroxylase (AHH) , ethoxyresorufin-O-dealkylase, (EROD), benzyloxyROD (BROD), pentoxyROD (PROD) and ethoxycoumarinOD (ECOD
Authors
Barnett A. Rattner, M. J. Melancon, T. W. Custer, R. L. Hothem, K. A. King, L. J. LeCaptain, J. W. Spann
Contaminant exposure of willets feeding in agricultural drainages of the lower Rio Grande valley of south Texas
Willets (Catoptrophorus semipalmatus) were collected in June and August 1986 at the outlets of two agricultural drainages into the Lower Laguna Madre of South Texas and at two other Texas coastal sites. Mean liver concentration of arsenic was higher in August than June. Over 20% of the livers had arsenic concentrations elevated above a suggested background level of 5.0 ppm dry weight (DW), but c
Authors
T. W. Custer, C. A. Mitchell
Comparative sensitivity of little brown bats (Myotis lucifugus) to acute dosages of sodium cyanide
No abstract available.
Authors
D. R. Clark, E. F. Hill, P.F.P. Henry
Environmental contaminants in bald eagle eggs
Bald Eagle eggs (1968-84) were analyzed for organochlorine pesticides, PCBs and mercury. DDE declined in WI, ME and the Chesapeake Bay. DDE was most closely related to shell thickness and reproduction at sampled breeding areas. Sixteen ppm DDE (wet weight) was associated with 15% shell thinning. Reproduction was normal when eggs at sampled breeding areas contained
Authors
Stanley N. Wiemeyer, C. M. Bunck, C. J. Stafford