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Organochlorine pesticides, polychlorinated biphenyls, and mercury in osprey eggs--1970-79--and their relationships to shell thinning and productivity

Archives of Environmental Contamination and Toxicology

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Abstract

Osprey (Pandion haliaetus) eggs were collected in 14 states in 1970-79 and analyzed for organochlorine pesticides, polychlorinated biphenyls (PCBs), and mercury. Moderate shell thinning occurred in eggs from several areas. DDE was detected in all eggs, PCBs in 99%, DDD in 96%, dieldrin in 52%, and other compounds less frequently. Concentrations of DDT and its metabolites declined in eggs from Cape May County, New Jersey between 1970-72 and 1978-79. Eggs .from New Jersey in the early 1970s contained the highest concentrations of DDE. Dieldrin concentrations declined in eggs from the Potomac River, Maryland during 1971-77. Five different contaminants were significantly negatively correlated with shell thickness; DDE was most closely correlated. Ten percent shell thinning was associated with 2.0 ppm DDE, 15% with 4.2 ppm, and 20% with 8.7 ppm in eggs collected from randomly selected nests before egg loss. Shell thickness could not be accurately predicted from DDE concentrations in eggs collected after failure to hatch, presumably because the eggs with the thinnest shells had been broken and were unavailable for sampling. DDE was also significantly negatively correlated with brood size. Other contaminants did not appear to adversely affect shell thickness or reproductive success.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Organochlorine pesticides, polychlorinated biphenyls, and mercury in osprey eggs--1970-79--and their relationships to shell thinning and productivity
Series title:
Archives of Environmental Contamination and Toxicology
Volume
17
Issue:
6
Year Published:
1988
Language:
English
Contributing office(s):
Patuxent Wildlife Research Center
Description:
767-787
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Archives of Environmental Contamination and Toxicology
First page:
767
Last page:
787
Number of Pages:
21