Kilonzo B S, Gisakanyi N D
Department of Veterinary Microbiology and Parasitology, Sokoine University of Agriculture Chuo Kikuu, Morogoro, Tanzania.
Med Vet Entomol. 1988 Oct;2(4):325-9. doi: 10.1111/j.1365-2915.1988.tb00204.x.
Laboratory-reared Ctenocephalides felis (Bouche) adults were tested with 0.5% malathion and 0.5% permethrin, using the standard WHO methods. After 24 h exposure to malathion (3.6 mg/cm2), 92% of the fleas died. The LT50 for malathion was approximately 8 h. Permethrin (0.45 mg/cm2) produced 100% mortality of exposed insects after 24 h while with a higher dose (0.9 mg/cm2) all fleas died after 8 h exposure. LT50 for the two doses of permethrin were 7.7 and 1.05 h, respectively. The failure of the diagnostic dose of malathion to kill 100% of the population was attributed to resistance. Permethrin is a suitable pesticide for controlling fleas of domestic animals in Tanzania.
使用世界卫生组织的标准方法，对实验室饲养的猫栉首蚤（Bouche）成虫进行了0.5%马拉硫磷和0.5%氯菊酯测试。暴露于马拉硫磷（3.6毫克/平方厘米）24小时后，92%的跳蚤死亡。马拉硫磷的半数致死时间约为8小时。氯菊酯（0.45毫克/平方厘米）在24小时后使暴露昆虫的死亡率达到100%，而在较高剂量（0.9毫克/平方厘米）下，所有跳蚤在暴露8小时后死亡。两种剂量氯菊酯的半数致死时间分别为7.7小时和1.05小时。诊断剂量的马拉硫磷未能杀死100%的群体被归因于抗性。氯菊酯是坦桑尼亚控制家畜跳蚤的合适杀虫剂。
