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1 August 2006 Laboratory Evaluation of Bistrifluron, a Benzoylphenylurea Compound, as a Bait Toxicant Against Coptotermes formosanus (Isoptera: Rhinotermitidae)
Shunichi Kubota, Yoshinori Shono, Tadahiro Matsunaga, Kunio Tsunoda
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Abstract

Bistrifluron, a benzoylphenylurea compound, was evaluated with regard to its efficacy against workers of Coptotermes formosanus Shiraki (Isoptera: Rhinotermitidae) by using three laboratory tests. In the no-choice feeding test, the mortality of bistrifluron-treated worker termites was significantly higher than that of termites exposed to the same concentrations of hexaflumuron (e.g., 6 wk at 500 ppm, 4 wk at 5,000 ppm, and 2 wk at 50,000 ppm) and untreated controls. Bistrifluron showed higher dose dependence and a faster speed of action than hexaflumuron. Both bistrifluron and hexaflumuron had feeding-deterrent effects at 5,000 ppm in the two-choice feeding test, although the mortality of worker termites exposed to bistrifluron or hexaflumuron at 5,000 ppm was not significantly different from untreated controls. In the allogrooming inhibition test, to examine effects of bistrifluron on allogrooming behavior of termites, termite movement was affected at 1 wk before termites died when exposed to 5,000 ppm bistrifluron. These results indicate bistrifluron is effective as a bait toxicant at 5,000 ppm; however, bistrifluron may cause some feeding repellency at ≥5,000 ppm.

Shunichi Kubota, Yoshinori Shono, Tadahiro Matsunaga, and Kunio Tsunoda "Laboratory Evaluation of Bistrifluron, a Benzoylphenylurea Compound, as a Bait Toxicant Against Coptotermes formosanus (Isoptera: Rhinotermitidae)," Journal of Economic Entomology 99(4), 1363-1368, (1 August 2006). https://doi.org/10.1603/0022-0493-99.4.1363
Received: 14 December 2005; Accepted: 1 April 2006; Published: 1 August 2006
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KEYWORDS
bait toxicant
benzoylphenylurea
bistrifluron
Coptotermes formosanus
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