Sterile insect technique (SIT)

• Zanzibar • 1988 tsetse population suppressed using insecticidetreated cattle & traps • Serial release of sterilized males by aircraft, 60,000 per week in 1-2km flight lines • 1994-1997 >8.5 million males released. 1995 sterile : indigenous male ratio >100:1; >70% barren females • 1996-7 Tsetse population crash; Glossina austeni eradicated