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Organochlorine residues and eggshell measurements of tree swallows Tachycineta bicolor in Colorado

Bulletin of Environmental Contamination and Toxicology

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Abstract

Residues of 6 organochlorine compds. were detected in adult carcasses, 4 in eggs, 2 in brains, and one in nestlings of Colorado tree swallows (Tachycineta bicolor). DDE [72-55-9]accounted for 91% of total organochlorine compound residue in each of the 4 sample types. DDE was detected in 30 samples (94%) and DDT [50-29-3] in 2 samples (6%). Carcasses of breeding females and egg clutches had residues of 6 organochlorine compds. not found in nestling samples. Only residues of DDE were found in nestlings. DDT and DDE were the only organochlorine compds. recovered in brain samples. Measurements of tree swallow eggshells showed that unattended eggs were not significantly different from those of attended or historical eggs. The implications of the observed organochlorine compound contamination are discussed.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Organochlorine residues and eggshell measurements of tree swallows Tachycineta bicolor in Colorado
Series title:
Bulletin of Environmental Contamination and Toxicology
Volume
35
Issue:
6
Year Published:
1985
Language:
English
Contributing office(s):
Patuxent Wildlife Research Center
Description:
767-775
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Bulletin of Environmental Contamination and Toxicology
First page:
767
Last page:
775
Number of Pages:
9