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Significance of organochlorine and heavy metal residues in wintering shorebirds at Corpus Christi, Texas, 1976-77

Pesticides Monitoring Journal

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Abstract

Organochlorine and heavy metal residues were determined in 103 shorebirds of seven species collected at Corpus Christi, Texas, during the winter of 1976-77 to evaluate their potential effects on population survival, DDE and polychlorinated biphenyls (PCBs) were detected in most samples. Chlordane isomers, dieldrin, toxaphene, and heptachlor epoxide also occurred, but less frequently. In general, organochlorine residues were low in skinned carcasses. Geometric means on a wet weight basis ranged from 0.25 ppm to 4.76 ppm for DDE and from 0.67 ppm to 6.64 ppm for PCBs; residues of the other compounds averaged less than 1 ppm in all instances. Mercury, lead, arsenic and vanadium occurred in all shorebird livers, and selenium and cadmium were detected in all kidneys. Residues of these metals, except selenium, were low in most tissue samples. Selenium averages varied from 1.77 ppm to 5.62 ppm (wet weight) in kidneys; residues in this range may be sufficient to inhibit reproduction or to induce other forms of toxicity, especially at the higher levels.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Significance of organochlorine and heavy metal residues in wintering shorebirds at Corpus Christi, Texas, 1976-77
Series title:
Pesticides Monitoring Journal
Volume
14
Issue:
2
Year Published:
1980
Language:
English
Publisher:
Federal Working Group on Pest Management
Publisher location:
Washington, D.C.
Contributing office(s):
Patuxent Wildlife Research Center
Description:
58-63
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Pesticides Monitoring Journal
First page:
58
Last page:
63
Number of Pages:
6