Abstract

Development of a Cheap Media for Bacillus thuringiensis Growth

Highlights

  • Overview Global use of insecticides for mosquito control in recent decades has caused environmental pollution of aqueous ecosystems and has resulted in the development of insecticide resistance in many mosquito species[1]

  • The high cost of B. thuringiensis products is due to production being located in the developed countries where production costs are higher, and due to expenses paid in transportation to the operational sites

  • Wheat bran and potato were tested as carbon sources, while, rabbit feed as protein source, seawater and or stock solution for mineral source, and we investigated B. thuringiensis growth in cabbage and cactus extract based on the fact that BT are usually isolated from soils planted with cactus and cabbage

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Summary

Introduction

Overview Global use of insecticides for mosquito control in recent decades has caused environmental pollution of aqueous ecosystems and has resulted in the development of insecticide resistance in many mosquito species[1]. Production and use of bioinsecticides have been drawing increasing attention to environmentally hazardous chemicals. Bacillus thuringiensis is one of the most commonly used products of such microbial insecticides. B. thuringiensis bioinsecticides are composed of mixture of spores and crystals harvested from the production media[2]. More than 400 insect species have developed the abilityto resist chemical insecticides and this reduces their field efficacy [3]. Local production should significantly reduce costs of pest control and could help the development of local fermentation industries and their improvement, besides the utilization of agro-industrial byproducts. The major advantage of this biocide is that risk of development of resistance of mosquitoes to BT. based products is very low, due to its multi-toxin complex [7]

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