A TRIAL OF ODOR BAITED TARGETS TO CONTROL THE TSETSE-FLY, GLOSSINA-MORSITANS-CENTRALIS (DIPTERA, GLOSSINIDAE) IN WEST ZAMBIA

Targets of black cloth with or without flanking netting panels (ca. 1 m tall x 1.7 m) baited with acetone (130 mg/h) and 1-octen-3-ol (0.5 mg/h), coated with deltamethrin suspension concentrate and deployed at 4/km2, produced a decline of 3% per day in the apparent density of the tsetse fly Glossina morsitans centralis Machado in 500 km2 of the Western Province of Zambia. Flies were eradicated in a year as evidenced by the absence of catches from fly-rounds and traps and the elimination of the transmission of trypanosomiasis. The promise of the target technique is confirmed but the need for its further development is emphasized.