Some Effects of Age, Preimaginal Habitat, and Adult Food on Susceptibility of Boll Weevil to Certain Insecticides1
Experiments were conducted to determine the toxicity of Guthion® (0,
ylmethyl) phosphorodithioate), BHC, and toxaphene to the boll weevil under certain conditions of preimaginal habitat, adult food source, and weevil age. There was a 48- and 61-fold difference in the LD-50 of BHC and toxaphene, respectively, between the easiest to kill group (square-reared, bloom-fed, 2-day-old) and the hardest to kill group of weevils (boll-reared, boll-fed, 9-day-old). The LD-50 values were relatively constant in all tests using Guthion.
The susceptibility of boll weevils to BHC and toxaphene was influenced to a greater extent by the adult food source than the age of the weevil or its preimaginal habitat.
Based on LD-50 values, the order of susceptibility of the boll weevil to BHC and toxaphene was: boll-reared
Document Type: Research Article
Publication date: August 1, 1960
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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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