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Laboratory colonies of Culex pipiens pipiens L., Tribolium confusum Jacquelin duVal, and Oncopeltus fasciatus (Dallas) were submitted to selection pressure at the EC60 level in each generation; 7 different JH mimics and diftubenzuron were thus investigated for their liability to induce resistance. For each insect, test methods for assessing their susceptibility levels were developed to trace development of resistance. Methoprene induced resistance in C. p. pipiens, and tolerance in the 2 other species. Triprene induced resistance in C. p. pipiens and hydroprene induced it in T. confusum. Diflubenzuron induced a modest resistance in C. p. pipiens and T. confusum while Stauffer R-20458 and Hoffmann-LaRoche Ro-20-3600 did not Stauffer R-20458 and kinoprene induced tolerance in O. fasciatus. The methoprene-resistance developed in C. p. pipiens was at first handicapped by a greatly reduced reproductive success, but after 40 generations of pressure and the attainment of a 100-fold resistance, the reproductive success had returned to normal. This resistance showed polyfactoral inheritance and extended in cross-resistance to 5 other JH mimics but not to diflubenzuron nor to conventional insecticides.
Document Type: Research Article
Publication date: April 1, 1978
More about this publication?
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.