关键词: 氟氯氰菊酯, 台湾乳白蚁, 触杀作用

Abstract: Objective To determine the contact toxicity of cyfluthrin on the workers of Coptotermes formosanus.Methods The workers of C.formosanus were contacted with the filter paper or sandy soil treated with cyfluthrin and their mortality was evaluated every 24 hours.Results Toxicity of cyfluthrin on the workers of C.formosanus was related with the time of treatment and the concentration of treatment.The mortality of workers continuously exposed to the filter paper treated by 25 mg/L cyfluthrin solution was 100% at 8 days after treatment,and the mortality of workers exposed 30 minutes to the filter paper treated by 800 mg/L cyfluthrin solution was 100% at 3 days after treatment.However,if the workers of C.formosanus were contacted with sandy soil treated with 20 mg/L cyfluthrin solution,the mortality would reach 100% at 6 days after exposure.Conclusion 5.7% cyfluthrin EC could be used for termite control.