ABSTRACT
The Queensland fruit fly (Qfly), Bactrocera tryoni, was detected for the first time in Western Australia during February 1989. Western Australia has an incipient population of Mediterranean fruit fly, Ceratitis capitata, that infests a large range of commercial fresh fruit. The campaign against the Qfly consisted of a three-pronged attack: male annihilation, foliage baiting, and sterile insect release techniques. Monitoring and assessment of the campaign was based upon trapping techniques and upon fruit surveillance. Fruit surveillance was done throughout the infestation area, until wild fly numbers were low in June 1990. Electrophoretic and morphological identifications were conducted to separate medfly and Qfly larvae and pupae retrieved from collected fruit samples. A program of sterile insect releases, foliage baiting, and male annihilation techniques was implemented in September 1989. Foliage baiting and male lure blocks were used to reduce the intensity of the infestation while mass rearing facilities were built.
