Comparative study of toxicity of Bacillus thuringiensis against Aedes albopictus larvae, pupae and adults in plastic container and used tyres

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Research Paper 01/07/2017
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Comparative study of toxicity of Bacillus thuringiensis against Aedes albopictus larvae, pupae and adults in plastic container and used tyres

Wajeeha Hameed, Dr Nusrat Jahan, Ferhat Mehmood
J. Bio. Env. Sci.11( 1), 274-280, July 2017.
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Bioefficacy and residual activities of Bti TP and WDG were evaluated, in outdoor conditions, with various concentrations in two types of water storage containers i-e plastic containers and used tyres, which constitute vast developmental/breeding sites for Aedes mosquitoes in urban/semi urban areas. Maximum residual activity of Bti TP was 35 days against 2.4ppm in plastic containers and minimum 14 days against 0.3ppm in used tyres as compared to Bti WDG observed in plastic containers for 35 days against 0.26 ppm and minimum residual effect of 14 days with 0.05ppm in used tyres. In general Bti WDG showed 10-12 X more residual effect as compared to Bti TP in both types of containers. In comparison of two types of containers, residual activity of Bti TP and WDG was low in used tyres as compared to plastic containers with respect to larval mortalities. However, there was no significant difference (P > 0.05) between two types of containers.


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