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Studies on combined effects of organophosphates or carbamates and morsodren in birds. II. Plasma and cholinesterase in quail fed morsodren and orally dosed with parathion or carbofuran

Bulletin of Environmental Contamination and Toxicology

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Abstract

The degree of interaction between mercury and cholinesterase inhibiting pesticides was determined by comparing enzyme responses to sublethal dosages of parathion or carbofuran in quail fed 0.05, 0.5, or 5.0 ppm morsodren for 18 weeks. A statistically significant interaction was defined as greater brain cholinesterase inhibition in morsodren-fed than in clean-fed birds following pesticide dosage. The tissue residues of mercury that accumulated before significant mercury-parathion interactions occurred were higher than levels that might be expected in natural populations, but significant mercury-carbofuran interactions occurred in birds that had only accumulated 1.0 ppm liver mercury. The results indicate that indiscriminate usage of cholinesterase inhibiting pesticides are dangerous, since natural populations of fish-eating birds oftentimes contain this magnitude of mercury.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Studies on combined effects of organophosphates or carbamates and morsodren in birds. II. Plasma and cholinesterase in quail fed morsodren and orally dosed with parathion or carbofuran
Series title:
Bulletin of Environmental Contamination and Toxicology
Volume
19
Issue:
4
Year Published:
1978
Language:
English
Contributing office(s):
Patuxent Wildlife Research Center
Description:
389-395
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
389
Last page:
395
Number of Pages:
7