乙基多杀菌素对井上蛀果斑螟生长发育的影响

井上蛀果斑螟(Assara inouei Yamanaka)是云南石榴上的重要害虫.为系统评价乙基多杀菌素对井上蛀果斑螟的综合控制作用,研究了乙基多杀菌素对该虫卵和初孵幼虫的直接致死效应及对存活后续虫态生长发育的影响.结果表明,浸渍法处理井上蛀果斑螟不同日龄卵后,随着乙基多杀菌素浓度和卵日龄的增大,卵孵化率显著降低,幼...

Effects of Spinetoram on the Growth and Development of Assara inoueiYamanaka

Assara inouei Yamanaka is a serious pest of pomegranate in Yunnan. To systematically evaluate the integrated effects of spinetoram on controlling A. inouei, the direct lethality of spinetoram on the egg and neonate larvae, and post-exposure influence on the subsequent development of all stages of this pest were investigated. When the different day-old eggs ofA. inouei were treated with spinetoram by using the dipping method, with the increase of spinetoram concentration and the day-old eggs, the egg hatching rate decreased significantly, and the mortality rate of larvae increased. When the neonate larvae were treated using the feeding method, the larval mortality increased with the increasing concentration of spinetoram and the prolongation of the time after treatment, and low doses spinetoram had a significant impact on the development of surviving larvae and the subsequent stages. Low doses spinetoram could significantly prolong the developmental period of surviving larvae, prepupal and pupal periods, and significantly reduce pupation ratio, pupal weight, emergence ratio and number of eggs laid per female. Spinetoram has good insecticidal activity against the eggs and neonate larvae of A. inouei. At the same time, it also has a significant inhibitory effect on the development of subsequent stages at low doses. It could be used to control the population development ofA. inouei.