摘要
【目的】探究氯虫苯甲酰胺对草地贪夜蛾Spodoptera frugiperda亲代(F_(0))和子一代(F_(1))的亚致死效应,为草地贪夜蛾的防治和氯虫苯甲酰胺的合理使用提供理论依据。【方法】采用饲料拌毒法测定氯虫苯甲酰胺对草地贪夜蛾的毒力,利用生命表技术研究了氯虫苯甲酰胺对草地贪夜蛾F_(0)代和F_(1)代生长发育及繁殖的亚致死效应。【结果】与丙酮对照相比,LC_(25)的氯虫苯甲酰胺处理后草地贪夜蛾F_(0)代雌蛾产卵量显著下降(P<0.05)、成虫寿命显著延长(P<0.001);F_(1)代4龄和5龄幼虫历期和成虫寿命均显著延长(P<0.05),雌蛾产卵前期及总产卵前期显著延长(P<0.05),而产卵期显著缩短(P<0.05),产卵量(P<0.001)和卵孵化率(P<0.05)均显著下降;此外,F_(1)代种群净增值率(R_(0))显著降低(P<0.05),平均世代周期(T)显著延长(P<0.05)。【结论】LC_(25)的氯虫苯甲酰胺显著影响草地贪夜蛾的生长发育和繁殖,并抑制其种群增长,对草地贪夜蛾综合防治策略的制定有积极意义。
[Objectives]To determine the sublethal effects of chlorantraniliprole on the F_(0)and F_(1)generation of Spodoptera frugiperda and thereby provide a theoretical basis for the rational use of chlorantraniliprole to control this pest.[Methods]The feed mixing method was used to determine the toxicity of chlorantraniliprole to S.frugiperda,and its sublethal effects on the development and reproduction of the F_(0)and F_(1)generations were studied using life tables.[Results]Treatment with a sublethal concentration(LC_(25))of chlorantraniliprole significantly reduced(P<0.05)the fecundity and increased the longevity(P<0.001)of F_(0)females compared to the acetone-control.The duration of the 4th and 5th larval instars and adult longevity of the F_(1)generation were significantly longer(P<0.001),as were the pre-oviposition period(APOP)and total pre-oviposition period(TPOP)(P<0.05).The oviposition period was significantly shorter than that of the control(P<0.05).The oviposition period,fecundity(P<0.001)and hatch rate(P<0.05)of F_(1)females were significantly less than in the control group,and,in addition,the net reproductive rate(R_(0))of the F_(1)generation was significantly lower(P<0.05)and the average generation cycle(T)significantly longer(P<0.05).[Conclusion]The results suggest that sublethal concentrations of chlorantraniliprole can inhibit the population growth of S.frugiperda,which could contribute developing a comprehensive control strategy for this pest.
作者
陈冬婧
杨灯海
俞政平
操海群
李桂亭
周丽君
CHEN Dong-Jing;YANG Deng-Hai;YU Zheng-Ping;CAO Hai-Qun;LI Gui-Ting;ZHOU Li-Jun(School of Plant Protection,Anhui Agricultural University,Key Laboratory of Biology and Sustainable Management of Plant Diseases and Pests of Anhui Higher Education Institutes,Hefei 230036,China)
出处
《应用昆虫学报》
CSCD
北大核心
2023年第4期1290-1296,共7页
Chinese Journal of Applied Entomology
基金
安徽省高等学校自然科学研究项目(KJ2021A0195)
高校优秀青年骨干教师国内外访学研修项目(gxgnfx2021116)
安徽省科技重大专项(201903a06020027)
安徽农业大学大学生创新创业项目(202110364602)。
关键词
草地贪夜蛾
氯虫苯甲酰胺
亚致死效应
Spodoptera frugiperda
chlorantraniliprole
sublethal effects
