Mortality Effects of Isaria farinosa and Beauveria bassiana on Aelia rostrata Boh. (Hemiptera: Pentatomidae)

Abstract

The effects of entomopathogenic isolates, Isaria farinosa (Holm.) and Beauveria bassiana (Balsamo) Vuillemin (Sordariomycetes: Hypocreales), were investigated on the adult stages of Aelia rostrata Boh. (Hemiptera: Pentatomidae) under of 70% and 95% relative humidity and with 1x106 and 1x108 conidial concentration (ml-1). These experiments were conducted in a climatic chamber with 27±1°C and 16 h. light and 8 h. darkphotoperiod, and the mortality percentages were determined in the 6th, 9th and 12th days of incubation. The result of experiments showed that both of the entomopathogens were more effective in 95% R.H. and 1x108 conidial concentrations (ml-1). At 70% R.H. and 1x108 conidial concentrations (ml-1), while I. farinosa caused 70% mortality in the 12th day of incubation, B. bassiana caused 100% mortality in the 9th day of incubation. It was concluded that B. bassiana isolate was more effective than I. farinosa isolate on wheat stink bug, A. rostrata