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1 June 2001 Attractiveness of Insecticide Baits for Cockroach Control (Dictyoptera: Blattellidae)Laboratory and Field Studies
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Several insecticide bait formulations were evaluated for their attractiveness to cockroaches in olfactometer assays in the laboratory and in trapping experiments in the field. Included in the assays were bait stations, gels, pastes, and a powder that contained one of the following active ingredients: abamectin, boric acid, chlorpyrifos, or hydramethylnon. There were significant differences among the baits in their attractiveness to the German cockroach, Blattella germanica (L.). In trapping experiments, Avert powder (abamectin), Maxforce station and gel, and Siege gel (all hydramethylnon) were consistently attractive to B. germanica adults and nymphs. Laboratory olfactometer assays with adult males confirmed these results and showed that nymphs were as responsive as males whereas females were less responsive. Our bioassays also demonstrate that attractiveness of bait can be dramatically affected by the age of the bait. One week of aging significantly reduced the attractiveness of Avert powder in both laboratory and field assays. Aging, however did not diminish the attractiveness of Maxforce gel, indicating that the formulation may be critical for retention of attractiveness of baits. Baits that were most attractive to the German cockroach were also the most attractive to nymphs and adults of the brownbanded cockroach, Supella longipalpa (F.).

Godfrey Nalyanya, Dangsheng Liang, Robert J. Kopanic, and Coby Schal "Attractiveness of Insecticide Baits for Cockroach Control (Dictyoptera: Blattellidae)Laboratory and Field Studies," Journal of Economic Entomology 94(3), 686-693, (1 June 2001).
Received: 21 June 2000; Accepted: 1 February 2001; Published: 1 June 2001

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