Pathogenicity of Beauveria bassiana to Bemisia tabaci (Homoptera : Aleyrodidae)‎

الملخص EN

Present test reported successful infection by Beauveria.

Bassiana against the whitefly, Bemisia.

Tabaci.

The fungus tested for its pathogenicity on the third–instar nymphs, and tested also against one-and 4-day-old eggs.

Also the tests proved a reduction in total protein, fat, and - amylaze enzyme in the treated insects.

Eggs were found to be immune to infection, but mortality of hatching nymphs reached 80-90%.

The rate of hatching nymphs infection depended on the age of which the eggs were treated.

Mortality of nymphs recorded on the third day after treatment and LC50 was 1.12 x 103 and LC90 was 3.8 x 103 spores/ml.