Figure 4.

Mean survival at constant and fluctuating temperatures. Mean percentage survival for Anopheles arabiensis (left) and Anopheles funestus (right) between the two fluctuating temperature regimes and constant mean of 25°C. Differences in lower case letters indicate significant differences in survival between temperature treatments within each species (GLZ with binomial distribution and logit link: An. arabiensis df=2, 72, chi-squared=15.4, P<0.001; An. funestus df=2, 72, chi-squared=164.9, P<0.0001). Survival of An. arabiensis was only negatively affected at the most variable temperature treatment. Anopheles funestus experienced severely lowered survival at the two fluctuating temperature treatments when compared to the constant 25°C treatment.