摘要
为了解吡虫啉不同亚致死剂量对豆蚜(Aphis craccivora Koch)试验种群参数的影响,阐明豆蚜发育及繁殖与亚致死剂量的关系。在(25±1)℃,光周期L∶D=16 h∶8 h,相对湿度(RH)70%～80%条件下,采用带叶浸虫法确定吡虫啉的亚致死剂量,通过叶碟饲养,记录其发育历期、产蚜量和寿命。结果表明,豆蚜经处理后,平均寿命表现为LC_(30)处理后显著短于对照,而LC_(20)和LC_(10)处理与对照无显著差异;平均产蚜量表现为LC_(30)处理后显著低于对照组。LC_(10)、LC_(20)、LC_(30)处理豆蚜后,F_1代若虫和成虫期与对照差异不显著,但若蚜存活率均显著低于对照。表明吡虫啉不同亚致死剂量处理豆蚜后,对其寿命和繁殖力均起抑制作用。
To understand the effects of sublethal dosage of imidacloprid on the experimental population parameter of Aphis craccivora Koch,and to investigate the relationship between the development,reproduction of A.craccivora Koch and sublethal dosage,which can provide a theoretical basis for comprehensive control of A.craccivora Koch.Sublethal dosage of imidacloprid on A.craccivora Koch was examined by leaf with insect dipping method and disc leaf dipped method respectively under constant temperature(25±1)℃,a 16∶8(L∶D)hours photoperiod and relative humidity(70%~80%).The developmental duration,fecundity of aphids and life time were recorded.The results showed that mean longevity and fecundity of the adults treated by LC30 were significantly lower than the control,but the mean longevity and fecundity of the adults treated by LC20 and LC10 showed no significant difference than the control.No significant regulations were found on the durations of different developmental stages of F1 generation nymphs and adults,but the survival rate of F1 generation nymphs were significantly lower than the control treated by three concentrations(LC10,LC20 and LC30).The results indicated that the lifetime and fecundity of A.craccivora Koch treated by different concentrations of imidacloprid were inhibited.
作者
刘昌燕
万正煌
焦春海
李莉
刘良军
陈宏伟
LIU Chang-yan;WAN Zheng-huang;JIAO Chun-hai;LI Li;LIU Liang-jun;CHEN Hong-wei(Institute of Food Crops,Hubei Academy of Agricultural Sciences/Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement,Wuhan 430064,China)
出处
《湖北农业科学》
2018年第23期89-91,共3页
Hubei Agricultural Sciences
基金
国家食用豆产业技术体系专项(CARS-08-G13)
湖北省重大专项(2018ABA090)
