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1 December 2011 Effect of Soil Type and Exposure Duration on Mortality and Transfer of Chlorantraniliprole and Fipronil on Formosan Subterranean Termites (Isoptera: Rhinotermitidae)
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Abstract

The uptake and potential transfer of chlorantraniliprole and fipronil by the Formosan subterranean termite, Coptotermes formosanus Shiraki, was investigated in the laboratory by using donor-recipient model bioassays. Two different types of substrates, sandy loam soil (18.6% organic matter) and sand (0.19% organic matter), were used to evaluate how these treated substrates impact the direct mortality and transfer efficiency of the two nonrepellent termiticides tested at different concentrations. Chlorantraniliprole exhibited a more delayed mortality on termites than fipronil in sand. In soil, chlorantraniliprole did not cause higher mortality to either donor or recipient termite at any of the tested concentrations during a 21-d test period when compared with controls. Compared with the controls, a greater number of donors died in the soil treated with fipronil at 14 h postinteraction, and higher death of recipients occurred at 21 d but only in the 60-ppm concentration tested. Our data showed that chlorantraniliprole performed best in substrate with low organic matter against C. formosanus.

© 2011 Entomological Society of America
Bal K. Gautam and Gregg Henderson "Effect of Soil Type and Exposure Duration on Mortality and Transfer of Chlorantraniliprole and Fipronil on Formosan Subterranean Termites (Isoptera: Rhinotermitidae)," Journal of Economic Entomology 104(6), 2025-2030, (1 December 2011). https://doi.org/10.1603/EC11118
Received: 11 April 2011; Accepted: 1 August 2011; Published: 1 December 2011
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