Background: Beet armyworm, Spodoptera exigua (Hübner) (Lepidoptera: Noctuidae), is a major pest of numerous cultivated crops. Chlorantraniliprole, the first commercialised ryanodine receptor insecticide from the anthranilic diamide class, has exceptional insecticidal activity on a range of lepidopteran pests. The aim of this study was to assess the resistance of S. exigua to chlorantraniliprole in the laboratory.
Results: A field-collected population of S. exigua was selected after repeated exposure to chlorantraniliprole to determine the risk of resistance evolution. After 22 generations of selection, there was a 12.0-fold increase in LC(50) . The realised heritability (h(2)) of resistance was estimated as 0.1082 by using threshold trait analysis. The projected rate of resistance evolution indicated that, if h(2) = 0.1082 and 70% of the population was killed at each generation, then a tenfold increase in LC(50) would be expected in 21.7 generations for chlorantraniliprole.
Conclusion: These results show that the risk of resistance development to chlorantraniliprole exists in S. exigua after continuous application.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1002/ps.2201 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Genotypic diversity and biological characterization of Alphabaculovirus mabrassicae isolates from a wide host range.
Pest Manag Sci
January 2025
Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China.
Background: Baculoviruses are ideal biological insecticides, providing long-lasting pest control and environmental benefits. Alphabaculovirus mabrassicae stains, with their broad host range, have been effective in agricultural pest management. Various A.
View Article and Find Full Text PDFSeasonal Migratory Activity of the Beet Armyworm (Hübner) in the Tropical Area of China.
Insects
December 2024
The State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
The beet armyworm (Hübner), a global pest, feeds on and affects a wide range of crops. Its long-distance migration with the East Asian monsoon frequently causes large-scale outbreaks in East and Southeast Asia. This pest mainly breeds in tropical regions in the winter season every year; however, few studies have investigated associations with its population movements in this region.
View Article and Find Full Text PDFDifferential detoxification enzyme profiles in C-corn strain and R-rice strain of Spodoptera frugiperda by comparative genomic analysis: insights into host adaptation.
BMC Genomics
January 2025
Provincial Key Laboratory for Agricultural Pest Management of Mountainous Region, Institute of Entomology, Guizhou University, Guiyang, 550025, China.
Background: The fall armyworm (FAW) Spodoptera frugiperda, a highly invasive, polyphagous pest, poses a global agricultural threat. It has two strains, the C-corn and R-rice strains, each with distinct host preferences. This study compares detoxification enzyme gene families across these strains and related Spodoptera species to explore their adaptation to diverse host plant metabolites.
View Article and Find Full Text PDFThe AMS/DYT1-MYB module interacts with the MED25-MYC-MYB complexes to inhibit jasmonate-regulated floral defense in Arabidopsis.
J Integr Plant Biol
December 2024
College of Life Sciences, Capital Normal University, Beijing, 100048, China.
The phytohormone jasmonates (JAs) regulate plant growth and defense responses. The reproductive organs of flowers are devastated by insect herbivores. However, the molecular mechanisms of floral defense remain largely unknown.
View Article and Find Full Text PDFA novel tank-mix formulation increases the efficacy of alphabaculoviruses on different phylloplanes.
J Econ Entomol
December 2024
Molecular Entomology (MOLEN) Laboratory, Department of Plant Protection, Faculty of Agriculture, Ankara University, Ankara, Türkiye.
Spodoptera littoralis Boisduval (Lepidoptera: Noctuidae) and Spodoptera exigua Hübner (Lepidoptera: Noctuidae) pose substantial threats to many crops, necessitating the exploration of biopesticides as potential chemical alternatives. One alternative is baculoviruses; however, their instability in the field has hindered their widespread use. Host plant phylloplane affects baculovirus activity at varying levels in different host plants.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!