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The data plot for the diagnostic dosage for a particular mosquito species and insecticide is plotted on all experimental graphs as a benchmark or standard. The data from an experimental population (or multiple populations) are plotted on the same graph. The threshold for resistance is defined as the upper range limit of the susceptible population, in other words, that time interval where 100 % mortality occurs. The percentage of mosquitoes still alive in a test population at the threshold is defined as the percentage of resistant individuals. In the sample shown (Figure 2), the level of resistance is X %. Conclusion: Test populations are directly compared with a reference susceptible population. In most field populations, both susceptible and resistant mosquitoes occur. These assays allow m
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