The toxic effects of 8 carbamate insecticides have been compared in susceptible and carbaryl-resistant strains of Blattella gennanica (L.). Baygon® (o-isopropoxyphenyl methylcarbamate) and UC-10854 (m-isopropylphenyl methylcarbamate) effectively killed cockroaches of both strains with a topical method of application. Dimetilan and Isolan® (l-isopropyI-3-methyI-5-pyrazolyl dimethyl- carbamate) were less toxic, and there was little resistance to these materials in the carbaryl-resistant cockroaches. Susceptible cockroaches were killed effectively by UC- 21149 (2-methyl-2-(methylthio)propionaldehyde 0- (methylcarbamoyl)oxime) and Matacil® (4-(dimethylamino)-m- lolyl methylcarbamate), but there was evidence of cross resistance to these compounds in the resistant strain. Cross resistance to MC-A-600 (benzo[b]thien-4-yl methyl carbamate) occurred in carbaryl-resistant cockroaches when a topical method of application was used. There was no apparent cross resistance to this material when a dipping technique was employed for testing. Carbaryl was ineffective in killing cockroaches of either strain by the topical method; as expected, significant levels of resistance were demonstrated in the resistant strain with a dipping technique.
Document Type: Research Article
Publication date: June 1, 1968
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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.