Abstract
AbstractIn spite of the good results obtained in the control of Ceratitis under field conditions on the Italian islands of Capri and Procida, in Nicaragua and in the Spanish Murcia area, several problems connected with the sterile male technique still have to be solved. Mass rearing of the insects must be improved. Perhaps, total sterility of the males is not required and the necessary dose of irradiation must be studied in relation to its effect on their competitiveness in the field. In checking the efficacy of field operations the recapture of marked individuals will have to be supplemented or gradually replaced by the time‐consuming assessment of egg‐hatching and fruit‐damage. Studies of the influence of environmental factors on population densities must be intensified.
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