Potential of entomopathogenic fungi as biological control agents of Yponomeuta malinellus Zeller, 1838 (Lepidoptera: Yponomeutidae)

The apple ermine moth, Yponomeuta malinellus Zeller, 1838 (Lepidoptera Yponomeutidae), is a common pest of trees in Asia and Europe, it has spread to North America. In growing regions Turkey, the population this may increase from time time, requiring separate control measure. such cases, Turkish growers generally rely on synthetic insecticides pest. present study aimed evaluate indigenous isolates some entomopathogenic fungi (EPFs) against as potential biological agents. pathogenicity tests, 14 EPF that belong 4 fungal species [Beauveria bassiana (Bals.) Vuill. – 7, Clonostachys rosea (Link) Schroers 3, Isaria farinosa (Holmsk.) Fr. 2 Purpureocillium lilacinum (formerly known Paecilomyces lilacinus (Thom) Samson) Luangsa-ard, Houbraken, Hywel-Jones & Samson 2] were assayed 4th instar larvae Y. under laboratory conditions. All tested with three different conidial suspensions (1 × 107, 1 108 109 conidia ml-1), using spray method. results assays demonstrated effectiveness increased increasing concentration elapsed up 9 days after treatment. Of tested, 3 B. (BbDm-1, BbDs-2 BbKm-3) most pathogenic, causing mortalities between 96.7% 100% at highest post suggest pathogenic above-mentioned have significant biocontrol malinellus.