Vulnerability of different life stages of Bactrocera zonata (Tephritidae: Diptera) Against entomogenous fungi

The pathogenecity of three entomopathogenic fungi,beauveria bassiana,metarhizium anisopliae and isaria fumosorosea was tested against different life stages of bactrocera zonata under laboratory conditions using five different ways viz.,contact bioassay,oral bioassay,inoculation of immatures and pupae and soil application for pupae. the results showed higher adult mortality in contact bioassay for all the fungi tested as compared to the other methods of application. the pathogenecity of b. bassiana was upto 20% in oral bioassay and 30-40% for i. fumosorosea and m. anisopliae,respectively. i. fumosorosea significantly affected the adult emergence,while 50-70% adult emergence was recorded in immatures inoculated with b. bassiana and m. anisopliae. symptoms of dark,shrinked pupae,deformed adults and incomplete adult emergence from the pupae were also observed after immature treatments with insect pathogenic fungi. copyright © 2015 zoological society of pakistan.