何超 沈登荣 尹立红 张睿 袁盛勇 田学军

摘  要：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，幼虫的死亡率升高。饲喂法处理井上蛀果斑螟初孵幼虫后，幼虫死亡率随药剂浓度的增大和处理后时间的延长而升高，且低剂量乙基多杀菌素对存活幼虫及其后续虫态的生存产生显著影响。低剂量乙基多杀菌素可显著延长存活幼虫的发育历期、预蛹期和蛹期，显著降低其化蛹率、蛹质量、羽化率和单雌产卵量。乙基多杀菌素对井上蛀果斑螟卵和初孵幼虫具有良好的杀虫活性，同时低劑量下对该虫的生长发育亦有明显的抑制作用，可用于控制井上蛀果斑螟的种群发展。

关键词：井上蛀果斑螟;乙基多杀菌素;孵化率;死亡率;化蛹率;羽化率

中图分类号：S436.6      文献标识码：A

Effects of Spinetoram on the Growth and Development of Assara inouei Yamanaka

HE Chao1， SHEN Dengrong1*， YIN Lihong2， ZHANG Rui1， YUAN Shengyong1， TIAN Xuejun1

1. College of Biological and Agricultural Sciences， Honghe University / Key Laboratory of Biological Resources Research and Utilization in Southern Yunnan， Mengzi， Yunnan 661199， China; 2. College of Biodiversity Conservation， Southwest Forestry University， Kunming， Yunnan 650224， China

Abstract： 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 of A. 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 of A. inouei.

Keywords： Assara inouei; spinetoram; hatch ratio; mortality; pupation ratio; emergence ratio

DOI： 10.3969/j.issn.1000-2561.2021.06.028

井上蛀果斑螟（Assara inouei Yamanaka）是石榴树上的重要蛀果害虫，目前在我国仅发现在云南为害，以幼虫蛀入石榴果实内为害，取食石榴籽粒的外表皮，边钻蛀边向外排出褐色颗粒粪便，造成果实腐烂和脱落，严重影响石榴的产量和品质[1]。井上蛀果斑螟一年发生多代，且世代重叠，发生规律复杂，是石榴主要鳞翅目蛀果害虫，给当地石榴生产造成严重影响[2]。……