Status of Insecticide Resistance in Spodoptera litura in Andhra Pradesh, India

Armes, N J and Wightman, J A and Jadhav, D R and Ranga Rao, G V (1997) Status of Insecticide Resistance in Spodoptera litura in Andhra Pradesh, India. Pest Management Science, 50 (3). pp. 240-248. ISSN 1526-4998

[img] PDF - Published Version
Restricted to ICRISAT users only

Download (996kB) | Request a copy


Twenty-two strains of the tobacco caterpillar, Spodoptera litura (F.) (Lepidoptera: Noctuidae), collected from groundnut crops of eight locations in Andhra Pradesh, India, between 1991 and 1996 were assayed in the F1 generation for resistance to commonly used insecticides. Resistance levels ranged as follows: cypermethrin, 0·2- to 197-fold; fenvalerate, 8- to 121-fold; endosulfan, 1-to 13-fold; quinalphos, 1- to 29-fold; monocrotophos, 2- to 362-fold and methomyl, 0·7- to 19-fold. In nearly all strains pre-treatment with the metabolic inhibitor, piperonyl butoxide, resulted in complete suppression of cypermethrin resistance (2- to 121-fold synergism), indicating that enhanced detoxification by microsomal P450-dependent monooxygenases was probably the major mechanism of pyrethroid resistance. Pre-treatment with the synergist DEF, an inhibitor of esterases and the glutathione S-transferase system, resulted in a 2- to 3-fold synergism with monocrotophos indicating that esterases and possibly glutathione S-transferases were at least to some extent contributing to organophosphate resistance.

Item Type: Article
Uncontrolled Keywords: Spodoptera litura, Pyrethroids, Organophosphates, Carbamates, Endo-sulfan, resistance
Subjects: Others > Plant Pathology
Others > Entomology
Depositing User: Mr Siva Shankar
Date Deposited: 12 Dec 2011 12:25
Last Modified: 16 Sep 2013 12:36
Official URL:
Projects: Adaptive Research Initiative of the UK
Funders: Natural Resources Intitute(UK), Overseas Development Administration(UK)
Acknowledgement: We are indebted to Dr G. ·Shankar of Rallis India Ltd, for providing the Bangalore strain. Thanks are due to Mr Madhusudhan Reddy for rearing the S. litura strains and assisting with the bioassays: K. Babu Rao, A. Gafoor and 1. Nemiligundam kindly assisted with field collection of s. tieura strains at various times. Financial support to NJA was provided by the Natural Resources Institute, UK, through an Adaptive Research Initiative of the UK Governments's Overseas Development Administration.
View Statistics

Actions (login required)

View Item View Item