Journal of Pure and Applied MicrobiologyVol. 2 No. 1

Microbiological Test of fight by Bacillus thuringiensis (Bti) on two stages of life of the fly of the fruits Ceratitis capitata (wied) (Diptera:Tephritidae), L3 and the adult"

F. Hassani and N. Gaouar Benyelles

Laboratory of Ecology and Management of the Natural Ecosystems, Tlemcen Algeria

Received on 02 January 2008 and accepted on 12 February 2008



The massive use of chemical insecticides comprises many disadvantages however. Among the principal ones, let us mention the contamination of the water and the sources of food, the intoxication of animal and vegetable species not targeted the concentration in the trophic chains and the selection of populations of devastating insects resistant to chemical insecticides. Increasing concerns of the public with regard to the potentially harmful effects of the massive use of chemical insecticides for the environment led the researchers to find solutions of replacement to the chemical fight. Among the solutions which were proposed, the use of micro-organisms entomopathogenes likes Bacillus thuringiensis (Bti). We tried to try out a microbiological fight by studying the death rates caused by the application of Bacillus thuringiensis (Bti) to various amounts on the L3 stages and the adult of the fly.

Keywords : Ceratitis capitata, microbiological fight, Bacillus thuringiensis.