Effect of Cyromazine on the Oviposition of Mexican Fruit Fly (Diptera: Tephritidae) in the Laboratory

One- to two-day-old Mexican fruit fly adults, Anastrepha ludens (Loew), were not deterred from feeding continuously or Jor periods of 1, 3, and 5 d on diet containing either 1 x 103 or 1 x 104 ppm cyromazine. Although flies behaved normally after feeding, egg production was significantly reduced. Cyromazine did not appear to affect males. Those females fed a single meal containing >1.5 x 103 ppm cyromazine had significantly fewer eggs compared with the control.