Figure 5: Factors influencing egg hatching success in Aedes aegypti.

(a) The influence of host preference on egg hatching with a focus on the duration of thermal stress reveals a robust linear trend (p = 0.004). (b) The significant positive effect of ancestral origin on the egg-hatching success of Ae. aegypti mosquito eggs (p = 0.002). (c) The positive influence of density on egg hatching rate reveals that eggs originating from areas with higher human density exhibit higher hatching rates (p = 1.38 × 10⁻⁸). (d) Variables in (a), (b) and (c) can be combined in an index of human specialization syndrome, which accounts for 24% of variation in the final model ([LRT] p = 0.04). (e) Precipitation regimes (p = 0.78) and (f) precipitation during the warmest months of the year (p = 0.24) had no significant association with egg thermotolerance. ‘r’ values denote the correlation coefficient between the egg thermotolerance and the biological factors. R² denotes the proportion of variance for egg thermotolerance associated with the specific biological factor(s). Figures were produced using R 4.2.3 and edited with Inkscape 1.3.