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1 December 2013 Contact Toxicity and Residual Effects of Selected Insecticides Against the Adult Paederus fuscipes (Coleoptera: Staphylinidae)
Lee-Jin Bong, Kok-Boon Neoh, Zairi Jaal, Chow-Yang Lee
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The contact toxicity of four insecticide formulations (deltamethrin, fipronil, fenitrothion, and imidacloprid) applied on three different substrates (tile, plywood, and concrete) against the adult rove beetle, Paederus fuscipes Curtis, was evaluated. The relative order of speed of killing effects was as follows: deltamethrin > imidacloprid > fipronil > fenitrothion. Although deltamethrin showed the fastest action against P. fuscipes, the recovery rate of rove beetles at 48 h posttreatment was moderate (≈ 25%) on the tile surface to high (≈80%) on the plywood surface. Thus, it is likely that the insects did not pick up the lethal dose especially on porous surfaces. In contrast, fipronil demonstrated delayed toxicity that might promote maximal uptake by the insects. More than 80% mortality was registered for tile and plywood surfaces up to 4wk after exposure. High mortality (almost 100%) was recorded for imidacloprid-exposed P. fuscipes at 48 h posttreatment, but only on the tile surface. Among the four insecticides tested, fenitrothion was the least effective against P. fuscipes because low percentage to no mortality was recorded in the fenitrothion treatment.

© 2013 Entomological Society of America
Lee-Jin Bong, Kok-Boon Neoh, Zairi Jaal, and Chow-Yang Lee "Contact Toxicity and Residual Effects of Selected Insecticides Against the Adult Paederus fuscipes (Coleoptera: Staphylinidae)," Journal of Economic Entomology 106(6), 2530-2540, (1 December 2013).
Received: 26 April 2013; Accepted: 1 September 2013; Published: 1 December 2013

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insecticide formulation
insecticide susceptibility
insecticide toxicity
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