Preliminary study on the attractiveness of volatile constituents of host fruits to Bactrocera dorsalis Hendel.
Liu Y. C., Hwang R. H.
Author Affiliation: Department of Entomology, National Chung Hsing University, Taichung, Taiwan.
Plant Protection Bulletin (Taipei) 42 : 147-158
Abstract : Twenty-one constituents of fruits from guava (Psidium guajava), mango (Mangifera indica), citrus (Citrus grandis) and carambola (Averrhoa carambola) were selected and tested in the screen house to determine the most attractive compounds for luring the oriental fruit fly, Bactrocera dorsalis Hendel. Results showed that methyl anthranilate (MA), ?-terpineol (?T), ethyl acetate (EA), ethyl butyrate (EB) and cinnamyl alcohol (CA) were the most attractive to both female and male flies. Results also showed that 50% molasses was the best concentration in attracting the flies. Results showed that the mixture of 50% molasses and ethyl butyrate (25:1) was the most attractive one and one which was 1.8 times more attractive than 50% molasses used alone. The mixture of molasses and ethyl acetate was also more effective than 50% molasses. When two constituents were mixed with each other, it was shown that the mixtures of ?T+EA, EA+EB, ?T+EB, EA+CA and MA+EB attracted more adult flies than the other mixtures.