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Contaminants in wood stork eggs and their effects on reproduction, Florida, 1982

American Birds

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Abstract

One egg was removed from five Wood Stork (Mycteria americana) nests at each of eight colonies in central and northern Florida in 1982. DDE and mercury were present in all eggs with concentrations ranging up to 9.4 and 0.73 ppm wet weight, respectively. PCBs occurred in 25 eggs with a high value of 3.5 ppm. No other organochlorine compounds occurred in more than 307. of the eggs. Contaminant concentrations were remarkably similar among colonies. DDE was negatively correlated with eggshell thickness (r=-0.48 P < 0.01). Eggshell thickness averaged 4.2% less than for eggs collected before 1947. Contaminants showed no significant link to hatching or fledging success. However, eggs from nests with less than 100 percent hatching success showed a tendency toward higher DDE and PCB concentrations (P= 0.09 and 0.12, respectively).

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Contaminants in wood stork eggs and their effects on reproduction, Florida, 1982
Series title:
American Birds
Volume
38
Issue:
4
Year Published:
1984
Language:
English
Contributing office(s):
Patuxent Wildlife Research Center
Description:
544
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
544
Number of Pages:
544