Khau, Kian Keong (2009) Bait toxicant potential of fipronil and spinosad against subterranean termites (Coptotermes curvignathus). [Project Paper] (Submitted)
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Abstract
Fipronil and spinosad were studied for their potential use as termite bait toxicants against the subterranean termite (Coptotermes curvignathus). Topical application was used to compare toxicity of both chemicals to termites studied. Termites were topically applied with 5.0 µl of respective chemicals at various concentrations to determine LC50 of each chemical. In no choice test, termites were forced to feed on chemical treated bait cubes to evaluate the termicidal effects of fipronil and spinosad. Meanwhile, choice test was conducted to examine the feeding deterrent effects of the chemicals. The LC50 of fipronil and spinosad by topical application were 0.02 mg a.i/L and 0.294 mg a.i/L, respectively. These result showed that fipronil was more toxic than spinosad. Concentrations of fipronil and spinosad that exhibited delayed toxicity and caused more than 90% mortality at 14 days post treatment (DPT) in no choice test were 0.01 mg a.i/L and 5.0 mg a.i/L, respectively. In choice test, the bait cube consumption showed that fipronil did not have feeding deterrence to termites. However, spinosad showed deterrence at concentrations from 1.0 mg a.i/L to 10.0 mg a.i/L. Spinosad did not possess potential for use as bait toxicant since it caused feeding deterrence. Fipronil showed potential for use as termite bait toxicant at 0.01 mg a.i/L since it did not deter termites from feeding on treated bait and exhibited delayed toxicity.
| Item Type: | Project Paper |
|---|---|
| Faculty: | Faculty of Agriculture and Food Sciences |
| Depositing User: | Mr. Azman Mohamad |
| Date Deposited: | 17 Dec 2024 02:17 |
| Last Modified: | 17 Dec 2024 02:17 |
| URI: | http://psaspb.upm.edu.my/id/eprint/2063 |
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