Dioxin effects on wood duck (Aix sponsa) embryos from sites near paper mills
Conference
·
OSTI ID:40035
- North Carolina State Univ., Raleigh, NC (United States)
- National Biological Survey, Laurel, MD (United States). Patuxent Wildlife Research Center
- National Biological Survey, Raleigh, NC (United States)
Biological and biochemical variables were studied in wood duck embryos from four dioxin-contaminated sites near paper mills in the Southeastern United States and three reference sites. Sites were selected based on a history of dioxin contamination in both sediments and fish. In addition, wood duck embryos collected downstream from an Arkansas Superfund site with demonstrated dioxin-induced reproductive impairment served as positive controls. Whole clutches of eggs were collected from the wild after fifteen days of incubation and mechanically incubated. Two embryos per clutch were sacrificed at pipping and liver monooxygenase activities (BROD, EROD and MROD) were quantified. Hatching success was determined for the remainder of the nest. Preliminary results indicate no difference in monooxygenase activities across sites even though the authors have previously demonstrated induction of monooxygenase activity in wood duck embryos in laboratory studies. In addition, there were no differences in weight at pipping, liver weight and liver weight to body weight ratios. No differences were seen in hatching success or weight at hatch nor were there any gross morphological abnormalities. This may indicate that exposure of wood ducks nesting near these pulp paper mills is below those which cause elevated monooxygenase activities and reproductive impairment.
- OSTI ID:
- 40035
- Report Number(s):
- CONF-9410273--
- Country of Publication:
- United States
- Language:
- English
Similar Records
Warm Is Better: Incubation Temperature Influences Apparent Survival and Recruitment of Wood Ducks (Aix sponsa)
Effects of polychlorinated dibenzo-p-dioxins and dibenzofurans on nesting wood ducks (Aix sponsa) at Bayou Meto, Arkansas
Dioxins and furans linked to reproductive impairment in wood ducks
Journal Article
·
Sun Oct 14 20:00:00 EDT 2012
· PLoS ONE
·
OSTI ID:1904871
Effects of polychlorinated dibenzo-p-dioxins and dibenzofurans on nesting wood ducks (Aix sponsa) at Bayou Meto, Arkansas
Journal Article
·
Mon May 01 00:00:00 EDT 1995
· Environmental Health Perspectives
·
OSTI ID:482349
Dioxins and furans linked to reproductive impairment in wood ducks
Journal Article
·
Fri Dec 31 23:00:00 EST 1993
· Journal of Wildlife Management; (United States)
·
OSTI ID:5100978