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Arthropods, 2015, 4(3): 90-97
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Article

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

Yayan Sanjaya1, Virginia R. Ocampo2, Barbara L. Caoili2
1Biology program and Graduate School, Indonesia University of Education
2Crop Protection Cluster, College of Agriculture, University Philippines Los Banos, College, Laguna 4031 Philippines

Received 13 June 2015;Accepted 5 July 2015;Published online 1 September 2015
IAEES

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).


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