Entomologie, ornithologie et herpétologie : recherches en cours
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Larvicidal Activity of Metabolites of Metarhizium anisopliae against Aedes and Culex Mosquitoes

Neetu Vyas, KK Dua and Soam Prakash

The objective of this study was to determine the larvicidal effects of entomopathogenic fungus Metarhizim anisopliae against degue, chikunguniya and filariasis disease vectors. The fungus was cultivated in the complete broth media and the extracelluar metabolites were filtered by using Whatman no.1 filter paper. Further, the filterd metabolites were conducted for its larvicidal efficacy against all instars of Ae. egypti and Cx. quenquefacistus, at five different significant concentrations (2.35, 2.65, 2.83, 2.95 and 3.05ppm). Larvae of Cx. quenquefacistus were found more susceptible than larvae of Ae. aegypti. The hightest LC₉₉ value (663.74ppm) was resulted in the first instar of Cx. quinquefasciatus while the lowest LC₉₉ value (309.02ppm) was found in third instar of Ae. aegypti. The findings of this preliminary study gives overview idea about the different larvicidal properties of the metabolites of M. anisopliea. Additionally it will help us to find specific larvicidal compound for mosquito borne disease control applications.