International Journal of Pure and Applied Zoology

- International Journal of Pure and Applied Zoology (2013) Volume 1, Issue 1

\Effect of Andrographolide on The Protein Content of Tribolium Confusum (Duval)

The post harvest losses and quality deterioration of food grain caused by insect pests during storage is the major problem in assuring food security in developing countries. Synthetic insecticides and fumigants have proved very effective in the control of these stored product pests. However, the problems associated with chemical insecticides such as genetic resistance by pest species, residual toxicity, increasing cost of application, pollution of the storage environment and hazard from handling directed a need for effective and biodegradable alternatives. Hence an attempt was made to control the stored product pest, Tribolium confusum using Andrographolide, the leaf extract of medicinal herb Andrographis paniculata. Its influence on the protein changes in the haemolymph, fat body and ovaries was studied. The protein content in the haemolymph, fat body and ovaries increased gradually in the larvae, pupae and the adults of Tribolium confusum, where as in Andrographolide treated resultant larvae there was a significant decrease in the protein content when compared with the controls. This sharp decline in protein content resulted in the development of various abnormalities such as larval- pupal intermediates, pupal- adult intermediates and abnormal adults.


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