LD95's for honey bees (A pis mellifera. L.) held 72 hours after mist chamber treatments were as follows: parathion ® (1-methoxycarbonyl-1-propen-2-yl dimethyl phosphate) ® (O,O-dimethyl S-4-oxo-1,2,3-bcnzotriaziu-3- (4H)-ylmethyl phosphorodithioate) ® (1-naphthyl N-methylcarballlate) ® (S- (p-chlorophenylthio) methyl O,O-diethyl phosphorodithioate) ® (bis(dialkoxyphosphinothioyl) disulfides (alkyl ratio 25% isopropyl, 75% ethyl). The first five materials had a mean LD95 of 0.0046%; the next four materials, 0.039%; and the last two materials, 0.57% concentration. These apparent levels of toxicity determined in the laboratory are not necessarily indicative of bee poisoning hazard in the field where residual action is an important factor. Bioassay of laboratory-killed honey bees showed 1.0 microgram of dieldrin per bee; while field-killed bee samples contained 0.5 microgram of dieldrin per bee.
Document Type: Research Article
Publication date: October 1, 1961
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Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.