Effect of pyrethroids, permethrin and fenvalarate, on the oxidative stress of Helicoverpa armigera

Akbar, S M D and Sharma, H C and Jayalakshmi, S K and Sreeramulu, K (2012) Effect of pyrethroids, permethrin and fenvalarate, on the oxidative stress of Helicoverpa armigera. World Journal of Science and Technology, 2 (1). 01-05. ISSN 2231 – 2587

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The cotton bollworm, Helicoverpa armigera is a polyphagous pest of several crops in Asia, Africa, and the Mediterranean Europe. Pyrethroid insecticides are used to control noxious insects in agriculture, forestry, households and horticulture. Therefore, the effect of permethrin and fenvalarate was evaluated on the oxidative stress in H. armigera. Lipid peroxidation, H2O2 content, and lactate dehydrogenase (LDH) activity increased and glutathione reductase (GR) activity decreased in a time- and dose-dependent manner in insecticide-fed larvae. However, catalase activity was not affected in insecticide-fed larvae. Larval growth decreased by ~ 64 and 70% in larvae fed on diets with sub-lethal doses of permethrin and fenvalarate. The results suggested that both the insecticides induced lipid peroxidation, H2O2, LDH leak, and altered antioxidant enzymes leading to oxidative stress in cells, which contribute to deleterious effects of these insecticides on the growth of H. armigera larvae, along with their neurotoxic effects.

Item Type: Article
Uncontrolled Keywords: Helicoverpa armigera, permethrin, fenvalarate, oxidative stress, antioxidant enzymes.
Subjects: Others > Entomology
Depositing User: Mr Siva Shankar
Date Deposited: 25 May 2012 07:10
Last Modified: 25 May 2012 07:10
URI: http://oar.icrisat.org/id/eprint/5934
Official URL: http://worldjournalofscience.com/index.php/wjst/ar...
Acknowledgement: We thank Mr V Venkateshwar Rao and Mr Chitti B Giddi, for providing the insect culture and help with the experiments. We also thank UGC, for providing JRF under RFSMS scheme to SMD Akbar, UGC – SAP (DSR - I), New Delhi, to KS and the Ministry of Agriculture, Government of India, to HCS.
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