Journal of Economic Entomology (1997) 90, 483-487

D.M. Miller, P.G. Koehler and R.S. Patterson (1997)
Use of German cockroach (Dictyoptera: Blattellidae) fecal extract to enhance toxic bait performance in the presence of alternative food sources
Journal of Economic Entomology 90 (2), 483-487
Abstract: The ability of German cockroach, Blattella germanica (L.), fecal extract to enhance toxic bait performance was evaluated in tests where a toxic bait was housed adjacent to the extract in arenas containing 5 alternative food sources. In arenas containing fecal extract and hydramethylnon bait (0.3% [AI]), cockroach mortality was 60% after 5 d. This was significantly greater than the 30% mortality obtained in arenas with hydramethylnon bait but no fecal extract. Chlorpyrifos bait (0.5% [AI]) paired with fecal extract also resulted in significantly higher cockroach mortality (60%) after 7 d than chorpyrifos bait alone (30%). The LT₅₀ value for arenas with the chlorpyrifos bait/extract combination was 5.7 d compared with 23.5 d for chorpyrfos bait with no extract. These results indicate that the use of fecal extract in combination with toxic bait may increase the attractiveness of bait stations, decrease bait repellency; and enhance cockroach mortality in the presence of competing food sources.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Dini M. Miller

Research topic(s) for pests/diseases/weeds:
pheromones/attractants/traps
control - general

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Blattella germanica