THE BEHAVIORAL AND PHYSIOLOGICAL COMPONENTS OF MALATHION RESISTANCE IN DROSOPHILA MELANOGASTER Academic Article uri icon

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abstract

  • Three parallel lines of Drosophila melanogaster were selected with different concentrations of the insecticide malathion over a period of 70 generations. Periodic assays found that the resistance of the adult and pre-adult stages increased at a rate proportional to the selection intensity. Ultimately all selected populations achieved similar levels of resistance. Relaxation of selection resulted in resistance drop-offs to pre-selection levels, while continued selection maintained resistance at a constant level. The results suggest that physiological resistance and behavioral response to malathion have distinct genetic bases, and that resistance of adults and larvae are also under independent genetic control.

publication date

  • December 1, 1982