EFFECT OF PREVENTION OF FLIGHT ON OVARIAN MATURATION AND REPRODUCTIVEDIAPAUSE IN THE OLIVE FRUIT-FLY (DIPTERA, TEPHRITIDAE)

Ovarian maturation is prevented in Bactrocera (Dacus) oleae (Gmelin) w hen preimaginal stages develop at 12:12 (L:D) h and 19 +/- 1 degrees C and are kept as adults at 16:8 (L:D) h and 25 +/- 1 degrees C. When f emales developed and maintained under these conditions had their wings amputated or cut off at half their length or their thoracic nota caut erized at an early age, a high percentage had mature oocytes 1 or 2 wk after treatment. Scorching the abdominal notum or cutting off the hal teres (which did not prevent flying), did not enhance ovarian maturati on. The younger the females at treatment, the stronger the effect of w ing amputation and scorching of the thoracic notum on ovarian maturati on. Females with wings amputated laid more eggs in olive fruit during their Ist 24 d of egg laying than did untreated females.