nsecticidal Activities of Four Native Entomopathogenic Fungus Beauveria bassianaBals. (Vuill) Isolates Against Tribolium castaneum (Herbst, 1797) (Coleoptera: Tenebrionidae)Adults Under Laboratory Conditions

Özet

In this work, control capacity of the four isolates (GN22-1, HP15, HP5-2, HP3-1) of entomopathogenic fungusBeauveria bassiana Bals. (Vuill) were evaluated against Tribolium castaneum (Herbst, 1797) (Coleoptera: Tenebrionidae)adultsunder laboratory conditions. To test the effect of each of the isolate on adults of T. castaneumwere dipped into 1×108conidia/ml suspensionof each isolate. The data for mortality was recorded after 3rd, 5th, 7th, 9th, 11th, 13th, 15th, 17th, 19th, 21st, and 23rdday. Thirteen days after application, isolates were listed as GN22-1 (72.85%), HP3-1 (48.88%), HP15 (47.37%) and HP5-2 (30.43%) based on the mortality rate they caused. Mortality rate was 83.52% at the end of the 23rdday with isolate GN22-1. While HP3-1 (53.74%) and HP15 (52.24%) caused more than 50% effect at the end of 23 days incubation period, the effect of HP5-2 remained only 32.51%. In addition, LT50and LT90rates were also determined. We arrive to the conclusion that especially GN22-1 isolate can has a potential in the control of this insect and may serve an alternative to chemical insecticides.