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VOL. 11, ISSUE 3 (2026)
A review on red spider mite in rice- an emerging pest in Tamil Nadu; Biology and management
Authors
K Kalaichelvi, K Natarajan, G Gayathry, P Murali Sankar
Abstract
Rice is the major crop of India especially
Tamil Nadu with an area of 2.16 million hectares. Now in rice among the
insects infesting, the important species is rice leaf mite, Oligonychus oryzae
Hirst (Acari: Tetranychidae). It is a very small sap-sucking pest that occurs
mainly on the leaf surface and can become serious under hot and dry conditions
affecting both nursery seedlings and transplanted rice. The life cycle of rice
leaf mite consisted of five different stages such as egg, larva, protonymph,
deutonymph and adult. Besides rice, this is also found in cassava, cotton,
rubber and mango. Secondary metabolites like Terpenes, Phenolic Compounds and
Nitrogenous Compounds activities have enhanced due to the infection by Red
Spider Mite. Whereas a decrease in chlorophyll, carotenoids, superoxide
dismutase, phenylalanine ammonia-lyase, catalase enzyme activities, amino
acids, glutathione was observed with mite infetstaion. Spiromecifen, a
tetraonic acid derivative acts as inhibitor of acetyl Co A carboxylase, a key
enzyme in fatty acid biosynthesis. It is highly toxic to immature stages as
well as adults stages of spider mites, and acts slowly against adult females causing
reduction in fertility and fecundity. all the novel acaricides tested,
spiromecifen, fenopyroximate, propergite and fenazaquin were found effective in
reducing the rice leaf mite population.
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Pages:530-534
How to cite this article:
K Kalaichelvi, K Natarajan, G Gayathry, P Murali Sankar "A review on red spider mite in rice- an emerging pest in Tamil Nadu; Biology and management". International Journal of Entomology Research, Vol 11, Issue 3, 2026, Pages 530-534
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