n African Entomology - Laboratory screening of insecticidal activities of and against larval and adult house fly ( L.) : research article




Thirty-four fungal isolates of (Balsamo) Vuillemin (Hyphomycete: Deuteromycetes) and two isolates of were evaluated for their entomopathogenic activity against larval and adult house fly, L. (Diptera: Muscidae). Of the fungal isolates tested, isolates were pathogenic to adult flies, causing mortality levels of 30-100 % within six days. The isolates were non-pathogenic towards adult flies. All the fungal isolates were marginally effective in controlling house fly larvae except isolates of . Four isolates that caused mortality of 90 % or more within two days were subjected to dose-response mortality bioassays. The lethal concentration of isolates that caused 50 % mortality (LC) ranged between 103-105 conidia/ml. The lethal time to 50 % mortality (LT) values ranged between 0.44-1.3 days.


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