Persistent toxicity and dissipation dynamics of afidopyropen against the green peach aphid Myzus persicae (Sulzer) in cabbage and chili

• Published in: Ecotoxicology and environmental safety 2023-03, Vol.252, p.114584-114584, Article 114584
• Main Authors: Liu, Xiaolan, Ban, Ning, Fu, Zhixiao, Gao, Xiwu, Liu, Tong-Xian, Liang, Pei
• Format: Article
• Language: English
• Subjects: Afidopyropen; Animals; Aphids; Brassica; Dissipation; Heterocyclic Compounds, 4 or More Rings - analysis; Insecticides - toxicity; Myzus persicae; Persistent toxicity; Residue
• ISSN: 0147-6513; 1090-2414
• DOI: 10.1016/j.ecoenv.2023.114584

The green peach aphid, Myzus persicae (Sulzer), is a significant global pest in horticultural and field crops. Afidopyropen is a novel systemic insecticide with high efficacy against sucking pests, and it is suitable for the management of M. persicae. However, the persistent toxicity and dissipation dynamics of afidopyropen in vegetables remain unknown. In this study, we determined the residual activity and dissipation dynamics of afidopyropen against M. persicae on cabbage and chili. The data showed that the toxicity of afidopyropen against M. persicae lasted more than 30 days; the corrected mortality was greater than 80% 10 days after application and was 50–60% 30 days post-application. The afidopyropen residues on cabbage and chili plants were quantified using ultrahigh-pressure liquid chromatography–tandem mass spectrometry. The dissipation half-lives of afidopyropen on cabbage and chili plants ranged from 1.45 to 2.34 days and 3.98–5.98 days at different recommended dosages, respectively. Our findings provide valuable data for the maximum residue limits of afidopyropen on vegetables and will help growers determine the frequency and timing of its application on cabbage and chili. [Display omitted] •Afidopyropen could cause 50–60% mortality of Myzus persicae 30 days after application on cabbage and chili.•The DT50 values of afidopyropen on cabbage and chili were 1.45-2.34 d and 3.98-5.98 d at different dosages, respectively.•The findings will help growers to effectively use of afidopyropen for management of M. persicae.