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Survival of Red Flour Beetles (Coleoptera: Tenebrionidae) on Concrete Partially Treated with Cyfluthrin

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Different densities of red flour beetles, Tribolium castaneum (Herbst), were exposed for 1 h on concrete with 20, 40, 60, or 80% of the total area treated with 200 mg/m2 of 20% [(AI)] cyfluthrin wettable powder. Residual bioassays were repeated 4 times at monthly intervals. Population density did not affect knockdown or survival of red flour beetles. The percentage of beetles still mobile after they were exposed decreased as the percentage of treated area increased, and there was no significant difference with respect to month. Survival decreased as the percentage of treated concrete increased and increased with each successive monthly bioassay. When beetles were knocked down after exposure, survival was higher for beetles knocked down on untreated concrete compared with treated concrete in 9 out of 16 comparisons. The presence of untreated pockets within a treated area could enable some of the insects to partially survive exposure to cyfluthrin in field applications.

Keywords: Tribolium castaneum; beetle; cyfluthrin; population density; pyrethroids

Document Type: Research Article

Publication date: August 1, 1999

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.
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