摘要
本文研究了灭幼脲1号(TH6040)实验室内的灭蝇效果,0.06‰浓度对家蝇卵有杀灭效果。用该浓度处理1、2龄幼虫,48小时内死亡率为100%;对3龄幼虫无杀灭作用,但可100%地抑制蛹羽化。TH6040对2、3龄家蝇幼虫的残效,0.06‰浓度120天后对2龄幼虫的杀灭效果仍为100%;对3龄幼虫虽无杀灭作用,但可完全抑制蛹羽化。可以认为,该药不适于杀灭末龄幼虫,对于控制早龄家蝇幼虫有较好的效果。TH6040对成蝇具有不育作用,0.01%浓度药液,连续喂成蝇10天,在喂药过程中所产的全部卵均未孵化。用0.1%浓度药液喂不同性别的成蝇3天,结果证明,单独处理雌蝇或雌、雄蝇同时处理,具有不育效果;而单独处理雄蝇则无作用。
The insect growth regulator, diflubenzu- ron(TH 6040) , was tested in controlling house-fly in the laboratory.The results showed that when it was used to treating eggs of house-fly with the 0.06‰. solution the hatch-inhibiting rate was 98.7%, treating 1st and 2nd instars larvae with the same solution the killing rate was 100% in 48 h. There was no effective for 3rd instars larvae, but it can inhibite the pupal emergence.The residual activity of 0.06‰. solution of TH 6040 was determined up to 120 days, at this time the mortality of 2nd instars larvae was 100%. 3rd instars larvae was no effected, but there was no any adults emerge from the pupae. Therefor, TH 6040 was suitable for killing earlyinstars larvae of housefly, it was no effect for late 3rd instars larvae.When both sexes were fed with 0.01% solution of TH 6040 for 7 days and 10 days, none of the eggs that treated house-fly deposited had hatched.The results indicated that uninterruptedly feeding adults with 0.01% solution of TH 6040 had sterilizing action to house-fly.
关键词
灭幼脲1号
灭蝇
杀灭率
Diflubenzuron (TH 6040 ) House- fly control Killing rate Residual activity Sterilizing action
