摘要
【目的】研究亚致死剂量杀虫剂对桃蚜Myzuspersicae(Sulzer)和萝卜蚜Lipaphiserysimi(Kaltenbach)翅型、发育和生殖的影响。【方法】采用叶片浸渍法测定了7种杀虫剂对两种蚜虫的毒力,并计算了实验所需的亚致死浓度LC10;采用微虫笼法测定了7种杀虫剂对桃蚜和萝卜蚜翅型分化、发育和生殖的影响。【结果】在20℃下,烯啶虫胺延长了桃蚜的发育历期;噻虫啉显著增加了桃蚜的产仔数量。在25℃,噻虫啉显著降低萝卜蚜有翅蚜比例;噻虫啉、吡虫啉、阿维菌素和烯啶虫胺延长了萝卜蚜发育历期;噻虫啉、阿维菌素、烯啶虫胺、啶虫脒和噻虫嗪显著降低了萝卜蚜产仔数量。【结论】亚致死剂量的杀虫剂对桃蚜和萝卜蚜的发育历期及产仔数量均有影响,但仅对萝卜蚜的翅型比例产生影响,对桃蚜的翅型分化比例无显著影响。
[Objectives] To examine the effects of sublethal insecticides on the wing dimorphism, development and reproduction of two aphid species, L. erysimi and M. persicae. [Methods] The toxicity of seven insecticides to the two aphid species was measured using the leaf immersion method and their sublethal concentrations(LC10) calculated. We then evaluated the effects of the seven insecticides on the wing dimorphism and biology of the two aphid species using the clip-cage method. [Results] At 20 ℃, itenpyram extended the developmental duration of Myzus persicae, whereas thiacloprid significantly reduced the number of offspring produced by M. persicae. At 25 ℃, thiacloprid significantly reduced the percentage of winged offspring produced by L. erysimi. At the same temperature, thiacloprid, imidacloprid, avermectin and acetamiprid extended the developmental duration of L. erysimi, whereas thiacloprid, avermectin, nitenpyram, acetamiprid and thiamethoxam significantly reduced the number of offspring produced by L. erysimi. [Conclusion] Sublethal doses of insecticides on two aphid species mainly affected the number of offspring and prolonged developmental duration. Sublethal doses of insecticides reduced the proportion of winged offspring in L. erysimi but not in M. persicae.
作者
李昭
郭圆
刘勇
王小平
朱智慧
LI Zhao;GUO Yuan;LIU Yong;WANG Xiao-Ping;ZHU Zhi-Hui(College of Plant Science &Tectmology,Huazhong Agrieultural University,Wuhan 430070,China;Hunan Plant Protection Research Institute,Changsha 410125,China)
出处
《应用昆虫学报》
CAS
CSCD
北大核心
2018年第5期896-903,共8页
Chinese Journal of Applied Entomology
基金
国家公益性行业(农业)科研专项"蔬菜主要病毒病防控技术研究与示范"(201303028)
关键词
杀虫剂
蚜虫
翅型分化
发育历期
生殖
insecticide
aphid
wing dimorphism
developmental duration
fecundity
