Sublethal Effects of the Microbial-Derived Insecticide Spinetoram on the Growth and Fecundity of the Fall Armyworm (Lepidoptera: Noctuidae)

The fall armyworm, Spodoptera frugiperda (J. E. Smith), is one of the most important pests in tropical and subtropical regions of American. S. frugiperda was first detected in Southern China in January 2019, and then subsequently invaded in 26 provinces. Spinetoram widely used for pest management is...

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Bibliographic Details
Published in:Journal of economic entomology 2021-08, Vol.114 (4), p.1582-1587
Main Authors: Gao, Zupeng, Chen, Yu, He, Kanglai, Guo, Jingfei, Wang, Zhenying
Format: Article
Language:English
Subjects:
Analysis
Bioassays
Body weight
Diet
ECOTOXICOLOGY
Eggs
Entomology
Fecundity
Growth
Insecticides
Insects
Laboratories
Larvae
Pest control
Pesticides
Pests
Pupation
Software
Spinosad
spinsetorm
Spodoptera frugiperda
Statistics
Sublethal effects
Toxicity
Variance analysis
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Summary:The fall armyworm, Spodoptera frugiperda (J. E. Smith), is one of the most important pests in tropical and subtropical regions of American. S. frugiperda was first detected in Southern China in January 2019, and then subsequently invaded in 26 provinces. Spinetoram widely used for pest management is recommended for S. frugiperda control. The sublethal effects of spinetoram on S. frugiperda were investigated in the present study.The toxicity of spinetoram against S. frugiperda larvae was determined after one oral dose of spinetoram at sublethal concentration.The results showed that spinetoram LC10 and LC30 were 0.011 and 0.044 mg/liter for the larvae, respectively. Spinetoram at sublethal concentration significantly increased developmental time but reduced larval body weight. In addition, spinetoram had a post-exposure effect on pupal weight, but not on pupal duration, pupation rate, emergence rate, eggs number, or adults longevity. In conclusion, the sublethal effects of spinetoram could negatively affect the growth and development of S. frugiperda that have important implications for pest management.
ISSN:0022-0493
1938-291X
DOI:10.1093/jee/toab123