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The Toxicity of Insecticides to Larvae of Dioryctria abietella in Laboratory Screening Tests1

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Laboratory screening tests were devised to evaluate the toxicity of 13 insecticides to last-instar larvae of a destructive pine cone moth, Dioryctria abietella (Denis & Schiffermüller).

Emulsifiable concentrates of aldrin, BHC, chlordane, DDT, dieldrin, endrin, heptachlor, malathion, toxaphene, Diazinon® (O,O-diethyl O-(2-isopropyl-4-wethyl-6-pyrimidinyl) phosphorothioate), Guthion® (O,Odimethyl S-(4-oxo-1,2,3-benzotrinzin- 3-(4H)-ylmethyl) phosphorodithioate), Perthane® (a mixture of diethyl diphenyl diehlorocthane (95%) and related reactionproducts (5%)), and Sevin®(1-naphthyl N-methylearbamate) were screened.

Mature larvae were exposed to pine cones which had been dipped in a range of water dilutions or these concentrates. L.C.- 90 values, estimated from concentration-mortality regression lines for the 96-hour exposure period, were used to assess the toxicity of each insecticide. At this mortality level the most effective insecticides, in decreasing order of toxicity, were endrin, BHC, Guthion, DDT, dieldrin, and Diazinon.

Document Type: Research Article

Publication date: October 1, 1962

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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.
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