Green Global
Foundation   Journal
...an emerging window for scientific research and publication across the globe

STERILIZATION AND MALE RATIO OPTIMIZATION OF PEACH FRUIT FLY, BACTROCERA ZONATA (SAUNDERS) FOR FIELD APPLICATION IN STERILE INSECT TECHNIQUE (Pages : 1 - 5)

The experiment was conducted for the sterilization and sterile male ratio optimization of peach fruit fly, Bactrocera zonata (Saunders) for field application in Sterile Insect Technique (SIT). To determine the male sterility dose 6 days old pupae of B. zonata were irradiated with doses of 10, 30, 40, 50 and 60 Gy. It was noted that percent of adult emergence and egg hatch decreased significantly with increasing radiation dose (p<0.01). The sterility percentage by a percent of egg hatch of B. zonata increased as the dose increased. Cent percent male sterility was achieved at 60 Gy. Fixed numbers (150 females) of virgin females were allowed to mate with normal and sterile (60 Gy) males at 1:1, 1:2, 1:5 and 1:9 ratios. Comparing with control group, a sharp decrease of pupal recovery was observed when females were allowed to mate with different ratios of sterile males. Minimum pupal recovery (42.10 fold less) was obtained at 1:9 ratio. Percent of normal adult emergence was decreased significanly (p<0.01) as the sterile male ratios were increased from 1:2 to 1:9. Deformed adult emergence, partial adult emergence and un-emerged percentage of peach fruit flies were increased significantly as the ratios of sterile males were increased. Download