Feeding behaviour of omethoate-resistant spider mites (Acari: Tetranychidae): a study using electrical penetration graphs

Fengying Guo; Zhimo Zhao

doi:10.11158/saa.5.1.1

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Fengying Guo,¹ Zhimo Zhao²

¹Institute of Microbiology and Epidemiology, 20 Dongdajie, Fengtai, Beijing 100071, China Email: fyguo@hotmail.com
²Department of Plant Protection, Southwest Agricultural University, Chongqing 400716, China

Abstract

The feeding behaviour of omethoate-resistant and susceptible strains of the spider mites (Tetranychus cinnabarinus) on cowpea leaves was studied by electrical penetration graph (EPG). EPG waves of the mite feeding were divided to two forms, the high frequency (7.7–8.7 Hz) and low frequency waves (2.4–3.0 Hz), representing feeding and non-feeding behaviour respectively. The average duration of feeding periods was not significantly different between resistant and susceptible mites. However, the amplitudes of feeding waves were significantly greater in pesticide-resistant mites than susceptible mites.

Citation Download Citation

Fengying Guo and Zhimo Zhao "Feeding behaviour of omethoate-resistant spider mites (Acari: Tetranychidae): a study using electrical penetration graphs," Systematic and Applied Acarology 5(1), 3-7, (1 July 2000). https://doi.org/10.11158/saa.5.1.1

Accepted: 1 May 2000; Published: 1 July 2000

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