painting drosophila

[Laurence D. MUELLER]

    I am not an artist but rather am interested to hear if anyone has
    had success permanantly marking individual flies with paint or
    some other substance.  My goal is ultimately study age-structure
    in laboratory populations.  My initial tests with water soluble
    acrylic paint have failed because the paints wear off on many
    flies within a week.
    Thanks for your help
    Laurence D. Mueller
    Dept. of Ecology & Evolutionary Biology
    Univ. of Calif.
    Irvine, CA. 92717
    LDMUELLE at UCI.EDU