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Acute responses of American kestrels to methyl parathion and fenvalerate

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Acute responses of American kestrels to methyl parathion and fenvalerate; 1984; Article; Journal; Federation Proceedings; Rattner, B.A.; Franson, J.C.

Summary

Physiological and toxicological effects of p.o, methyl parathion (0.375-3.0 mg/kg) or fenvalerate (1000-4000 mg/kg) were examined over a 10 h period in American kestrels (Falco sparverius) maintained in thermoneutral (22?.C) and cold (-5?.C) environments. Methyl parathion was highly toxic (LD50=3.08 mg/kg, 95% confidence limits=2.29-4.l4 mg/kg, producing overt intoxication (abnormal posture, ataxia, paresis), dose-dependent inhibition (26-67%) of brain acetylcholinesterase activity, hyperglycemia, and elevated plasma corticosterone concentration. Transient but pronounced hypothermia was associated with plasma cholinesterase inhibition in excess of 50% (2 h after intubation), although this response was highly variable (plasma ChE inhibition [...]

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Type Scheme Key
local-index unknown 5223909
local-pk unknown 5223909
series unknown Federation Proceedings

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journalFederation Proceedings
parts
typevolume
value43
typeissue
value3
languageEnglish
citationTypeArticle

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