Figure 8

Oviposition preference for larval extracts in the presence of Bacillus thuringiensis israelensis (Bti). Bti was added to traps loaded with 4th-stage larval extracts from Ae. aegypti as well as to the control water traps. Pairs of traps were deployed in the eight different locations in the field and inspected every two weeks. N = 51. Means were compared by using the Wilcoxon matched-pairs signed rank test.