Figure 2

Survivorship by karyotype (2La, continuous lines; 2L+^a, dashed lines) of female A. gambiae at three age groups when submitted to a desiccation resistance test. The insert shows the estimated value of the scale parameter (± standard error) of the Weibull hazard function for the six populations (black bars: 2La, light grey bars: 2L+^a). Larger values of the scale parameter correspond to lower hazards and increased survival. Shape parameter of the full regression model = 0.291.