Figure 2.

Initial hatching time (hours) of Aedes aegypti larvae in different quiescent periods, in two mosquitoes populations—Recife (gray) and Aracaju (white). The number of replicates was obtained according to the viability test, each them consisting of approximately 100 eggs. Values are represented as average hatching time (closed circle); the size of the boxes indicates the distance between the first (lower) and third (upper) quartiles, the central mark among them shows the median; the bars indicates variability outside quartiles and outliers are plotted with empty circles. No significant difference (ns) was found between the quiescent period analyzed within each mosquito population separately (Kruskal–Wallis with Student–Newman–Keuls test a posteriori, p ≤ 0.05). Asterisks indicate significative difference interpopulation in the same period of quiescence (Mann–Whitney U-test, p ≤ 0.05). No hatching was observed for the Aracaju mosquito population from 130 days, and no hatching was observed with 160 days of quiescence for both populations (see viability tests, Figure 1).