1. Evaluate new attractants in SIT programms
Rui Pereira

2. Jackson trap with trimedlure
Standard
Extensive adult mass trapping
Jackson trap with trimedlure

3. Results Distribution of the flies Ratio Sterile:Wild
Wild population levels
Wild population detection

4. Males
Unmarked
Marked
Wild
Sterile

5. Major faults Use of florescent dye causes reduced fly
Cost of separating the males

6. Recent developments Availability of GSS Control Programs
Female attractants

7. Dry traps with female attractants
Tephri Traps

9. Female attractants TCL
Putrescine
Ammonium acetate
Trimetylamine

10. If GSS is used
Females catch are wild

11. Madeira-Med (1999) Females released (1.8%) Traps serviced (5,508)
Females catch (154,035)
Percentage of sterile females (0.66%)

12. Wild flies

13. Madeira-Med (Data from 1999)

14. sterile  = total  – wild 
Total flies
(250)
(all wild)
 (wild + sterile)
(192)
(58)
wild  = 0.72 
(0.72 x 58) = 42
sterile  = total  – wild 
(192 – 42) = 150

15. Ratio Sterile:Wild

16. Conclusion: (Advantages of unmarked pupae)
Increase the quality of the flies
Cost reduction
Increase the quality of the work (reduce the risk of allergies)