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Pesticide contamination and hatching success of waterbirds in Mississippi

Journal of Wildlife Management

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Abstract

Waterfowl wintering on the Yazoo National Wildlife Refuge (NWR) were contaminated (ltoreq 4 ppm wet wt) with dichloro diphenyl trichloroethane (DDT) and 1,1-dichloro-2,2-bis-(p-chlorophenyl) ethylene (DDE), but residues were below levels known to affect waterfowl. Eggs of some nesting waterbirds contained higher than expected levels of DDE, especially those of green-backed herons (Butorides striatus), ranging up to 43 ppm wet weight. Hatching success (P lt 0.05) and eggshell thickness (P lt 0.05) in green-backed herons and anhingas (Anhinga anhinga) were negatively correlated with DDE in the eggs, and shell thinning (P lt 0.05) was evident 12-13 years after DDT was banned in the United States. The threshold level of DDE determined necessary for reduced hatching success in green-backed heron eggs was 5.1-10 ppm wet weight. These results further increase our ability to interpret DDE concentrations in waterbirds and predict their potential effects on productivity.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Pesticide contamination and hatching success of waterbirds in Mississippi
Series title:
Journal of Wildlife Management
Volume
52
Issue:
4
Year Published:
1988
Language:
English
Contributing office(s):
Patuxent Wildlife Research Center
Description:
724-729
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Wildlife Management
First page:
724
Last page:
729