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1 April 2014 Effects of a Fipronil Spot Treatment on Field Colonies of Coptotermes formosanus (Isoptera: Rhinotermitidae)
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Abstract

This field study investigated the colony effect of a fipronil spot treatment applied to active infestations of Formosan subterranean termite, Coptotermes formosanus Shiraki. Spot treatments were applied to a single active independent monitor from each of four colonies in which multiple independent monitors were established. All treated monitors were abandoned, and the contents of the treated monitors were replaced with untreated wood at the ≈30-d posttreatment inspection. All colonies survived treatment and only one colony exhibited long-term effects, which included significant reductions in termite collections and increased worker size. The affected colony was treated within 1 m of its primary nest. Two colonies exhibited a correlation between monitor termite production and distance from treatment. Distance appears to be a factor limiting fipronil's colony effects. The Formosan subterranean termite may not be a good candidate for the exterior perimeter and localized interior treatment label option because of the large range and size of the colony.

W.L.A. Osbrink, M. L. Cornelius, A. T. Showler, and J. M. Pound "Effects of a Fipronil Spot Treatment on Field Colonies of Coptotermes formosanus (Isoptera: Rhinotermitidae)," Journal of Economic Entomology 107(2), 727-740, (1 April 2014). https://doi.org/10.1603/EC13417
Received: 24 September 2013; Accepted: 3 January 2014; Published: 1 April 2014
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