Pesticide detoxifying mechanism in field population of Spodoptera litura (Lepidoptera: noctuidae) from South India | ||||
| Egyptian Academic Journal of Biological Sciences, F. Toxicology & Pest Control | ||||
| Article 7, Volume 3, Issue 1, December 2011, Page 51-57 PDF (109.11 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/eajbsf.2011.17437 | ||||
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| Authors | ||||
| Muthusamy Muthusamy; Shivakumar Shivakumar; Karthi Karthi; Ramkumar Ramkumar | ||||
| Department of Biotechnology, Periyar University, Salem, Tamilnadu. India – 636011 | ||||
| Abstract | ||||
| The army worm Spodoptera litura (fabricius) is one of the most damaging pests of ground nut and castor in India. We determine the susceptibility of S. litura reared on a castor leaves, to three insecticides (Temephos, Dichlorvos, and lambda-cyhalothrin) under laboratory conditions, associated with the enzyme activities of acetylcholinesterase (AChE), carboxylesterase (CarE), glutathione S-transferase (GST) and glutathione S- reductase (GSH) in this larvae. Among treatments Dichlorvos showed high mortality then lambda cyhalothrin and Temephos in whole body of the insect. The AChE activities of Spodoptera litura treated with lambda cyhalothrin, Temephos at 10ppm were almost 1.5 fold high. The CarE activity at 10ppm was almost 3 fold high. The GSH and GST activity were low then control (0.2 ± 0.4, 1.5 µM mg protein-1 min-1). The present study suggests that esterase and acetylcholine esterase may play a role in detoxification of synthetic pyrethroid and organophosphates in Spodoptera litura from South India. | ||||
| Keywords | ||||
| Esterases; Synthetic pyrethroid; Organophosphates; Army worm; detoxifying enzyme | ||||
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