Side Effect of Indigenous Entomopathogenic Fungi on the Predatory Mite, Cydnoseius negevi (Swirski and Amitai) (Acari: Phytoseiidae)

The present study deals with the side effect of four entomopathogenic fungi EPF, Metarhizium anisoplia (Metchnikoff), Beauveria bassiana (Balsamo), Paceliomyces fumosoroseus(Vassiljevsky) and Cladosporium cladosporiodes (Fresen), which used mainly against insect pests spider mites, on phytoseiid predatory mite, Cydnoseius negevi(Swirski Amitai) in laboratory.  Spore suspensions LC50 (1x106=106 conidia/ml) tested fungi, achieved a significant reduction% populations two-spotted Tetranychus urticae Koch, were sprayed different stages C. negevi individuals. In general, slight negative toxic EPF observed where no adverse was noticed eggs while increasingly larvae, protonymps deutonymphs. Mortality percentage treated adult females increased by increasing time after treatment, highest mortality 8 days exposure. fumosoroseus had rate reduction egg production followed B. then M. anisoplia, cladospriodes came last. Same ranking regarding life table parameters, P. caused lowest Ro, rm ermvalues prolonged mean generation T doubling timeDt (days). Accordingly, IPM program mite pests, we should use as biocontrol agents, that are safe to agents.