Figure 2.

Aedes aegypti larvae mortality at 24 h exposure to varying concentrations of temephos. The mortality of the late third instar Ae. aegypti larvae (N = 60–107) from the eastern parishes (St Catherine, KSA, St Thomas, St Mary, St Ann and Portland) exposed to varying concentrations (0–0.625 ppm) of temephos and observed for 24 h in comparison to the susceptible Rockefeller strain. The observed mortality at 0.625 ppm was compared across the test populations. The values are expressed as mean ± s.e. The Tukey post hoc test was used to identify differences in the mean at 0.625 ppm temephos for the Jamaican populations. Means at 0.625 ppm temephos with different letters are significantly different at p < 0.005.