Affiliation:
1. Provincial Key Laboratory for Conservation and Utilization of Important Biological Resources in Anhui, College of Life Sciences, Anhui Normal University, Wuhu 241000, China
Abstract
Ischnura senegalensis, which widely spreads in paddy fields, has the potential to be used as a natural predator of insect pests. However, the application of insecticides in the field could pose a threat to the survival of I. senegalensis. Among these pesticides, indoxacarb, an oxadiazine insecticide, is renowned for its broad-spectrum efficacy against numerous insect pests. In this study, we examined the toxicity of indoxacarb towards the larvae of I. senegalensis. Behavioral experiments and transcriptome analyses were conducted under indoxacarb treatments. Results revealed that indoxacarb induced abnormal body gestures and significant locomotory impairments, which could ultimately reduce the survival rate of the larvae in their natural habitat. Moreover, transcriptome analyses indicated that genes related to muscle function were significantly affected. Interestingly, at lower concentrations of indoxacarb (0.004 mg/L), the larvae seem to detoxify the indoxacarb with the aid of the cytochrome P450 gene. However, under higher concentrations (0.4 mg/L), the sensory abilities of the larvae were significantly diminished, and they were unable to degrade the toxicity of indoxacarb. Our study underscores the importance of carefully evaluating the impact of insecticides on non-target predatory insects before their widespread application.
Funder
National Natural Science Foundation of China
Special Funds for Supporting Innovation and Entrepreneurship for Returned Oversea-students in Anhui Province
Anhui Provincial Natural Science Foundation
the University Synergy Innovation Program of Anhui Province
the Outstanding Innovative Research Team for Molecular Enzymology and Detection in Anhui Provincial Universities
Anhui Provincial Key Laboratory of Molecular Enzymology and Mechanism of Major Diseases in Anhui Normal University
Cited by
1 articles.
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