Monitoring Resistance and Biochemical Studies of Three Egyptian Field Strains of Spodoptera littoralis (Lepidoptera: Noctuidae) to Six Insecticides.

ABSTRACT:

Background

Spodoptera littoralis (Boisd.) is a prominent agricultural insect pest that has developed resistance to a variety of insecticide classes. In this study, the resistance of three field strains of S. littoralis, collected over three consecutive seasons (2018 to 2020) from three Egyptian Governorates (El-Fayoum, Behera and Kafr El-Shiekh), to six insecticides was monitored.

Methods

Laboratory bioassays were carried out using the leaf-dipping method to examine the susceptibility of the laboratory and field strains to the tested insecticides. Activities of detoxification enzymes were determined in an attempt to identify resistance mechanisms.

Results

The results showed that LC₅₀ values of the field strains ranged from 0.0089 to 132.24 mg/

SUBMITTER: Moustafa MAM 

PROVIDER: S-EPMC10053388 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature