Sublethal effects of lambda-cyhalothrin on the biological characteristics, detoxification enzymes, and genes of the papaya mealybug, Paracoccus marginatus

• DOI: 10.1007/s10340-024-01837-3
• Publication Date: 2024-10-09T09:01:47Z
• Authors: Jian-Yu Li; Yan-Ting Chen; Yan Chen; Jian-Wei Zhao; Jian-Wei Fu; Meng-Zhu Shi
• Keywords: Cyhalothrin; Carboxylesterase

The papaya mealybug, Paracoccus marginatus, is an invasive pest that causes significant damage to various tropical fruits and ornamentals worldwide. Lambda-cyhalothrin, effective insecticide in integrated management (IPM) strategies, can control P. marginatus. This study evaluated the sublethal effect of lambda-cyhalothrin on life table parameters detoxification enzymes activities Furthermore, transcriptome sequencing analysis revealed potential mechanisms detoxification-related genes associated with activities. reported showed high activity against LC30 values 8.98 mg/L. Two-sex results development duration second instar nymphs, preadults, adult female longevity was significantly prolonged, fecundity stimulated F1-CY marginatus when parental generation exposed lambda-cyhalothrin. Moreover, treatment increased Cytochrome P450 monooxygenases (P450) glutathione-S-transferase (GST) enzymes. Additionally, expression levels P450, GST, carboxylesterase, esterase were observed subjected exposure. Our findings demonstrate concentrations influenced changes differential detoxifying might be involved response metabolism These could contribute a comprehensive risk assessment provide guidance for scientific use IPM strategies.