Lucia Alejandro, Harburguer Laura, Licastro Susana, Zerba Eduardo, Masuh Hector
Centro de Investigaciones de Plagas e Insecticidas CITEFA-CONICET, Juan Bautista de La Salle 4397, Villa Martelli, Buenos Aires, (1603), Argentina.
Parasitol Res. 2009 Apr;104(5):1101-7. doi: 10.1007/s00436-008-1294-8. Epub 2008 Dec 10.
A new ultralow volume formulation (ULV) containing permethrin as an adulticidal active ingredient and the insect growth regulator (IGR) pyriproxyfen as a larvicide was developed and its efficacy evaluated in a field trial in Wanda, Misiones (Argentina). Two separate study areas were sprayed: one with a ULV formulation of permethrin 15% plus pyriproxyfen 3% and the other with permethrin 15% only. A third untreated area was kept as a control. Sentinel cages containing adult mosquitoes and jars containing Aedes aegypti larvae III/IV were placed in treated and control areas. The residual activity of the formulations was tested using 20 L water containers. The adulticide effect of permethrin 15% + pyriproxyfen 3% formulation was similar to the permethrin 15% formulation, however, the inhibition of adult emergence in the treatment with permethrin 15% never exceeded 20%, whereas the inhibition of adult emergence in the treatment with permethrin 15% plus pyriproxyfen 3% showed initial values of 96% maintaining this high level of inhibition up to 35 days after ULV spraying. Larval indexes (House and Breteau indexes) showed that a greater, long-lasting effect was obtained with the permethrin 15% plus pyriproxyfen 3% formulation.
一种新的超低容量制剂（ULV）被研发出来，其含有作为成蚊杀虫剂活性成分的氯菊酯以及作为杀幼虫剂的昆虫生长调节剂（IGR）吡丙醚，并在阿根廷米西奥内斯省万达市的一次田间试验中对其效果进行了评估。对两个独立的研究区域进行了喷洒：一个区域喷洒15%氯菊酯加3%吡丙醚的超低容量制剂，另一个区域仅喷洒15%氯菊酯。将第三个未处理区域作为对照。在处理区和对照区放置了装有成年蚊子的哨兵笼以及装有埃及伊蚊III/IV期幼虫的罐子。使用20升水容器测试了制剂的残留活性。15%氯菊酯 + 3%吡丙醚制剂的杀成虫效果与15%氯菊酯制剂相似，然而，15%氯菊酯处理中对成虫羽化的抑制从未超过20%，而15%氯菊酯加3%吡丙醚处理中对成虫羽化的抑制在超低容量喷洒后最初达到96%，并在长达35天的时间内保持这一高抑制水平。幼虫指数（房屋指数和布雷托指数）表明，15%氯菊酯加3%吡丙醚制剂产生了更大、更持久的效果。
