Isoenzymes polymorphism in Metarhizium anisopliae (Deuteromycotina: Hyphomycetes) entomogenous fungi

96 Metarhizium anisopliae strains originating from various insects and countries, have been compared for their conidial size, their virulence towards the european corn borer and the profiles of some of their isoenzymes: glutamate oxalo-acetic transaminases, alcohol dehydrogenases, acid phosphatases.The correspondence factorial analysis has proved the relative homogeneity in M. anisopliae var. major but the M. anisopliae var. anisopliae strains group is very heterogeneous and some sub-populations, more uniform, can be differentiated composed of all the Brazilian strains or of those isolated from Curculionidae.The existence of a group of strains, original and intermediate between the var. major and anisopliae is discussed.