Figure 2. Effect of heat shock on major biological characteristics of Bemisia tabaci biotype B and Trialeurodes vaporariorum, including oviposition, nymph hatch rate, percentage of eggs that developed to adults, and female ratio. Different letters over the bars indicate the means at the six heat temperatures differ significantly for each biological parameter for each whitefly species at P < 0.05 (SNK, SAS Institute 2006).