Infection process of entomopathogenic fungi Beauveria bassiana in the Tetrancyhus kanzawai (Kishida) (Tetranychidae: Acarina)

Abstract

Characteristic of entomopathogenic fungus to Tetranychus kanzawai was investigated. Three selected isolates of Beauveria bassiana, from Philippines and Indonesia were evaluated. The following aspect was investigated: (1) Investigate infection process on each fungal against mite. In this experiment, adult mites exposed by spraying to 108 per ml concentrations of conidia observing by light microscope and Scanning Electron Microscopy (SEM). The result found T. kanzawai was very susceptible to three isolates B. bassiana which the end of the trials, fungal growth was detectable as early as 2 until 4 day observation. Infection process with microphotograph and SEM showed attachment, germination and penetration, extrusion and conidiogenesis fungal form.

Keywords

• Tetranychus kanzawai
• Beauveria bassiana
• light microscopy
• Scanning Electron Microspopy (SEM)