关键词: 台湾乳白蚁, 黄胸散白蚁, 伊维菌素, 敏感性

Abstract: Objective To test the susceptibility of Reticulitermes flaviceps and Coptotermes formosanus workers to ivermectin so as to provide basic information for termite control using ivermectin. Methods The workers of R.flaviceps and C.formosanus were exposed to soil or fed with filter papers treated with ivermectin,and then the dead was recorded every 24 hours. Results The sandy soil treated with ivermectin solution had high toxicity against the C.formosanus and R.flaviceps. The time from exposure to death and the mortality were positively related to the concentration of ivermectin solution and time of treatments. The mortalities of C.formosanus and R.flaviceps were 90.00% and 100%,respectively,at the 10th days after exposuring to sandy soil at 0.006 25 mg/L of ivermectin solution,while 100% and 100%,respectively,for 24 hours exposure to sandy soil at 0.1 mg/L of ivermectin solution. Compared to R.flaviceps,C.formosanus had higher susceptibility to ivermectin. Conclusion Ivermectin has stronger toxic capacity on the workers of R.flaviceps and C.formosanus. These suggest ivermectin could be used for termite control.