Caracterización de la Susceptibilidad al Malatión en la Mosca de las Indias Occidentales 1

At Nayarit, Mexico, since 2003 malathion has been applied in integrated pest management to control Anastrepha flies. It is necessary to know the susceptibility of these pests to the insecticide. We tested Anastrepha obliqua (Macquart) females, males, and 50:50 female/males that had selection pressure from this insecticide. The lower susceptibility was 1,000 and 10,000 mg of malathion per liter. The females were more susceptible than males or the 50:50 combination. These data are comparative for susceptibility tests of field specimens sprayed with 8,300 ppm of malathion.