Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16785
Effects of dietary ABATE® on reproductive success, duckling survival, behavior, and clinical pathology in game-farm mallards
Forty-four pairs of game-farm mallards (Anas platyrhynchos) were fed ABATE® 4E (temephos) to yield 0, 1, or 10 ppm ABATE® beginning before the initiation of lay, and terminating when ducklings were 21 days of age. The mean interval between eggs laid was greater for hens fed 10 ppm ABATE® than for controls. Clutch size, fertility, hatchability, nest attentiveness of incubating hens, and avoidance b
Authors
J. Christian Franson, James W. Spann, Gary Heinz, Christine M. Bunck, Thair Lamont
Why is environmental contaminant research done by wildlife management agencies?
No abstract available.
Authors
R.J. Hall
Effects of chronic dietary lead in American kestrels (Falco sparverius)
American kestrels were fed a diet containing 0, 10, or 50 ppm lead (Pb) powder for at least 5 mo. Blood delta-aminolevulinic acid dehydratase (ALAD) activity in birds receiving 50 ppm Pb was as low as 20% of controls but no significant effects were noted in packed cell volume (PCV) or hemoglobin concentration (Hb). Mean liver Pb residues in birds fed 50 ppm Pb were 1.3 and 2.4 ppm (dry wt) for mal
Authors
J. Christian Franson, Louis Sileo, Oliver H. Pattee, John F. Moore
Assessing hazards of organophosphate pesticides to wildlife
No abstract available.
Authors
C. E. Grue, W. J. Fleming, D.G. Busby, E. F. Hill
Heavy metal residues in Louisiana catfish below national averages
No abstract available.
Authors
J.B. Graves, G.U. Mayfield, D.P. Coulon, J.D. Newson
Crane reproductive physiology and conservation
Some unique features of crane reproduction, management, and conservation are described. Because cranes are sexually monomorphic, sexing is difficult and must be accomplished using behavior, laparoscopy, cloacal examination, genetic techniques, or fecal steroid analysis. Although husbandry techniques for cranes are similar to those used with other nondomestic birds, a number of basic characteristic
Authors
G.F. Gee
Status of the common tern (Sterna hirundo) in the tropical Pacific, with a note on records of the black-naped tern (Sterna sumatrana) in Hawaii
No abstract available.
Authors
R. B. Clapp, R.C. Laybourne, R. L. Pyle
First record of whiskered tern from the tropical Pacific
No abstract available.
Authors
R. B. Clapp, R.C. Laybourne
DDT: Recent contamination in New Mexico and Arizona?
No abstract available.
Authors
D. R. Clark, A. J. Krynitsky
Gray bats killed by dieldrin at two additional Missouri caves: Aquatic macroinvertebrates found dead
No abstract available.
Authors
D. R. Clark, R.L. Clawson, C. J. Stafford
Year and age effects on residues of dieldrin and heptachlor in dead gray bats, Franklin County, Missouri— 1976, 1977, and 1978
Dead gray bats (Myotis grisescens) containing lethal concentrations of dieldrin were found beneath a maternity roost in Bat Cave Nos. 2 and 3, Franklin County, Missouri, in 1976, 1977 and 1978. Whereas residues of dieldrin, DDE [1,1-dichloro-2,2-bis(p-chlorophenyl)ethylene] and PCB polychlorinated biphenyls in bats appeared not to change significantly over the 3 years, residues of heptachlor-relat
Authors
D. R. Clark, C. M. Bunck, E. Cromartie, R. K. LaVal
DDE in brown and white fat of hibernating bats
Samples of brown and white fat from hibernating bats (big brown bat, Eptesicus fuscus; little brown bat, Myotis lucifugus; and eastern pipistrelle, Pipistrellus subflavus) collected in western Maryland, USA, were analysed to determine lipid and DDE content. Amounts of brown fat, expressed as percentages of total bat weight, were the same for all three species. Lipid content of brown fat was signif
Authors
D. R. Clark, A. J. Krynitsky