Comparative Studies of Several Methods for Determining the Repellency of Blatticides

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Boric acid, diazinon, and cypermethrin were tested against the German cockroach, Blattella germanica (L.), using the harborage choice, slant board, and four variations of the choice-box method to determine if, and how, method design affects cockroach behavior and mortality during laboratory repellency tests. Timed exposure tests aided in evaluating results of repellency tests. Unequal aggregation during control repellency tests confounded interpretation of cockroach harborage selection during insecticide tests. Method design significantly affected mortality achieved over time and the degree of avoidance behavior during tests with the less toxic insecticides. These results indicate the limited usefulness of laboratory repellency tests in predicting the influence of repellency under variable field situations. Factors influencing mortality and repellency results are discussed.

Document Type: Research Article

Publication date: August 1, 1985

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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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