摘要
为了比较虫酰肼及其衍生物对鳞翅目5种害虫的毒力,以虫酰肼为对照药剂,分别采用浸叶法、浸虫法和点滴法测定了虫酰肼衍生物0593(Ⅲf)和0673对甜菜夜蛾Spodoptera exigua(Hbner)、斜纹夜蛾Prodenia litura(Fabricius)、小菜蛾Plutella xylostella(Linnaeus)、棉铃虫Helicoverpa armigera(Hbner)和玉米螟Ostrinia furnacalis(Guen e)的毒力;通过浸叶法系统研究了虫酰肼和虫酰肼衍生物0593对甜菜夜蛾生长发育的影响。结果表明:0593和0673对甜菜夜蛾4龄幼虫的触杀毒力分别是虫酰肼的11.3倍和7.4倍,对斜纹夜蛾4龄幼虫触杀毒力分别是虫酰肼的30.4倍和24.7倍,对小菜蛾3龄幼虫浸虫处理的毒力分别是虫酰肼的4.7倍和4.5倍,对棉铃虫3龄幼虫的触杀毒力分别是虫酰肼的15.5倍和15.2倍,对玉米螟4龄幼虫的触杀毒力分别是虫酰肼的1.3倍和2.0倍,较虫酰肼的毒力都有很大提高,而0593和0673对5种害虫的毒力差异不显著。用虫酰肼和0593处理甜菜夜蛾2龄幼虫,都能导致存活幼虫陆续死亡;化蛹率和正常蛹数降低;成虫羽化率、单雌产卵量和卵的孵化率显著减少,对后代的繁殖力影响显著;在相同处理浓度下,0593较虫酰肼对甜菜夜蛾后代繁殖力的不利影响更大。因此,0593是较虫酰肼杀虫毒力更高、对生长发育和繁殖力不利影响更大的药剂,开发应用价值很大。
In order to compare the toxicities of tebufenozide and its derivatives, the toxicities of tebufenozide derivatives 0593 （ Ⅲ f） and 0673 against five lepidopteran pests, i. e., Spodoptera exigua （Htibner）, Prodenia litura （Fabricius）, Plutella xylostella （Linnaeus）, Helicoverpa armigera （HObner） and Ostrinia fumacalis （Guen6e）, were investigated with leaf-dip, dipping and topical application compared with the tebufenozide. The effects of tebufenozide and 0593 on growth and development of S. exigua were studied with leaf-dip. The results showed that the contact toxicities of 0593 and 0673 to 4th-instar larvae of S. exigua were 11.3 and 7.4 times that of tebufenozide, respectively. The contact toxicities of 0593 and 0673 to 4th-instar larvae of P. litura were 30.4 and 24.7 times that of tebufenozide, respectively. The toxicities of 0593 and 0673 to 3rd-instar larvae of P. xylostella with dipping method were 4.7 and 4.5 times that of tebufenozide, respectively, and the contact toxicities of 0593 and 0673 to 3rd-instar larvae of H. armigera were 15.5 and 15.2 times that of tebufenozide, respectively. The contact toxicities of 0593 and 0673 to 4th-instar larvae of 0. fumacalis were 1.3 and 2.0 times that of tebufenozide, respectively. The toxicities of 0593 and 0673 to the five pests were higher than that of tebufenozide, but the differences of toxicities between 0593 and 0673 were not significant. Treated with tebufenozide and 0593, the 2nd-instar larvae of S. exigua died unceasingly after 72 h; the pupation rate and the number of normal pupae were decreased; in addition, adult emergence ratio, eggs laid per female and egg hatchability were also reduced significantly, and the fecundity was so affected significantly. Tebufenozide derivative 0593 showed more disadvantageous influence than tebufenozide on the fecundity of S. exigua at the same concentration. The results suggest that tebufenozide derivative 0593 is a pesticide with higher bioactivity against lepidopteran larvae and stronger harm
出处
《昆虫学报》
CAS
CSCD
北大核心
2008年第5期492-497,共6页
Acta Entomologica Sinica
基金
国家“十一五”支撑计划课题(2006BAD08A03)
关键词
虫酰肼
虫酰肼衍生物
鳞翅目害虫
毒力
生长发育
Tebufenozide
tebufenozide derivatives
lepidopteran pests
toxicity
growth and development
