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Extrapolating laboratory avian toxicity data to free-living birds: Comparison of the toxicity of parathion to captive and free-living European starlings

Society of Environmental Toxicology and Chemistry, annual meeting abstract book
By: , and 

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Abstract

In 1985 and 1986, we captured nesting wild female European starlings with young 8-10 days of age. Birds were weighted, banded, and given one of four dosages of the OP insecticide parathion (50, 72, 104 or 150 mg/kg dissolved in corn oil) or pure corn-oil (control). and their young weighed. Nest boxes (7- 12/treatment) were observed and young re-weighed 2-3 days postdose to determine presence/absence of the females. If necessary, males were captured and fate of young used to confirm female response. Brain ChE inhibition in dosed birds (based on a pilot study) was 55-74%. EC50's (failure to return to nest box) for the females was 74 mg/kg in 1985 and 92 mg/kg in 1986. Confidence limit (95%) for these estimates overlapped LD50's for captive female starlings dosed with the OP in spring and early summer 1987 (136, 128 mg/kg, respectively). Results suggest that responses of captive and free-living birds to potentially lethal concentrations of OP's are similar, despite the additional stresses in the wild.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Extrapolating laboratory avian toxicity data to free-living birds: Comparison of the toxicity of parathion to captive and free-living European starlings
Series title Society of Environmental Toxicology and Chemistry, annual meeting abstract book
Volume 14
Year Published 1993
Language English
Contributing office(s) Patuxent Wildlife Research Center
Description 77 (abstract no. 248)
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title Society of Environmental Toxicology and Chemistry, annual meeting abstract book
First page 77 (abstra