[Tolerance of the Mediterranean fly (Ceratitis capitata, Wiedmann) to malathion insecticide]

pupae of Ceratitis capitata that were about to hatch were sterilized with Gamma(10 krds). Residual Malathionr was applied at 0.001, 0.01, 0.1, 1.0 and 10 micrograms/ml. A level of 0.0904 produced the highest mortality in females that reached sexual maturity and were irradiated as pupae (lowest for mature, non-irradiated males).