Figure 4. Effect of stage of removal on adult longevity of T. vaporariorum (A) and B. tabaci (B). A brief description of the methods used for mating adult control and experimental whiteflies is provided in the legend for Fig. 2. Longevity (in days) was determined for mated whiteflies. Each value represents the mean ± S.E. for 10 – 20 whiteflies. For each species and for each sex, a one-way ANOVA (α = 0.05) was used to determine if there were significant differences among control and experimental groups. Since P was >0.05 the Tukey’s comparison of means test was not performed. A Student’s t-Test (α = 0.05) was used to compare the means of males and females for each experimental and each control group of each species of whitefly. An asterisk indicates that there is a significant difference in longevity between the sexes.