Estrada J G, Mulla M S
Department of Entomology, University of California, Riverside, CA 92521.
J Am Mosq Control Assoc. 1986 Mar;2(1):57-60.
Biological activity of two new IGRs was studied under laboratory conditions against 2nd- and 4th-instar larvae and pupae of Anopheles quadrimaculatus, Aedes aegypti and Culex tarsalis. The IGR S-21149, an oxime [0-(2-(4'-Phenoxyphenoxy)ethyl propionaldoxime], produced an overall mortality or inhibition of emergence of 95% (when 4th instar treated) at 0.0047, 0.0013 and 0.00041 mg/liter in the three species, respectively. The EI95 values for the second IGR S-31183, a pyridine compound, [1-(4'-Phenoxyphenoxy)-2-(2'pyridyloxy) propane] were 0.017, 0.0026 and 0.00032 mg/liter for the three species, respectively. Both materials in general were less active against 2nd than 4th-instar larvae, except that the 2nd- and 4th instars of An. quadrimaculatus were equally susceptible. Pupae treated at up to 0.1 mg/liter showed no mortality in the pupal or the ensuing adult stages.
在实验室条件下，研究了两种新型昆虫生长调节剂（IGR）对四斑按蚊、埃及伊蚊和致倦库蚊二龄和四龄幼虫及蛹的生物活性。昆虫生长调节剂S - 21149，一种肟[0 - (2 - (4'-苯氧基苯氧基)乙基丙醛肟]，在三种蚊虫中，当以0.0047、0.0013和0.00041毫克/升的浓度处理四龄幼虫时，总体死亡率或羽化抑制率分别达到95%。第二种昆虫生长调节剂S - 31183是一种吡啶化合物[1 - (4'-苯氧基苯氧基)-2-(2'-吡啶氧基)丙烷]，三种蚊虫的EI95值分别为0.017、0.0026和0.00032毫克/升。一般来说，这两种物质对二龄幼虫的活性均低于对四龄幼虫的活性，但四斑按蚊的二龄和四龄幼虫敏感性相同。以高达0.1毫克/升的浓度处理蛹，在蛹期及随后的成虫期均未出现死亡。
