Sublethal Effects of Three Insecticides on Development and Reproduction of Spodoptera frugiperda (Lepidoptera: Noctuidae)

Agronomy

Li-Li Zhang¹  Guo-Di Wang¹  Hui-Ming Wu²  Ya-Hui Liu²  Qiong Rao²  Hang-Li Feng²  Lovemore Zulu²  Yong-Li Zheng³ 

[1] Hangzhou Agricultural Technology Extension Center, Hangzhou 310020, China;The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Advanced Agricultural Sciences, Zhejiang A&F University, Hangzhou 311300, China;Zhejiang Agricultural Products Quality and Safety Center, Hangzhou 310003, China;

关键词: fall armyworm;    chlorantraniliprole;    dinotefuran;    beta-cypermethrin;    life table;   

DOI  :  10.3390/agronomy12061334

来源: DOAJ

【 摘 要 】

Spodoptera frugiperda is a serious invasive pest, which has attracted attention globally in recent years. Research on the sublethal effects of common insecticides on S. frugiperda is important for its comprehensive management in the field. In this paper, the sublethal effects have been studied for S. frugiperda exposed to the LC₃₀ concentration of three insecticides, chlorantraniliprole, dinotefuran, and beta-cypermethrin. The results showed that the pupation rates of the treatment groups were significantly lower than that of control group, but there were no significant differences in the eclosion rate. Chlorantraniliprole and beta-cypermethrin significantly inhibited fecundity of the F₀ and F₁ generations, and the number of eggs laid per female decreased by 67.4% and 43.1%, respectively, and that of the F₁ generation decreased by 28.0% and 21.7%, respectively. The intrinsic growth rate (r_m), net growth rate (R₀), and weekly growth rate (λ) of the F₀ generation in the chlorantraniliprole and beta-cypermethrin treatment groups were significantly lower than those in the control group. Additionally, dinotefuran had a certain role in promoting oviposition in the F₀ and F₁ generations, which may stimulate the growth of offspring population and cause the resurgence of pests. The results provide a reference for the effective implementation of the IPM plan in the field to control S. frugiperda.

【 授权许可】

Unknown