Figure 4.

Average proportion (± s.e.) of larvae of An. gambiae s.s surviving on damp soil after exposure to different periods of drought. The lines show the models after back-transformation of the linear model (arcsine(√ p) = a * time + b ) obtained after arcsine square root transformation of the original data. Model descriptions are given in Table 2. C: third-instar larvae (observed for 48 hours only), D: fourth-instar larvae