Using the Diagnostic
Dosage to Detect Resistance
The data plot for the diagnostic dosage for a particular mosquito species
and insecticide is plotted on all experimental graphs as a benchmark or
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 %
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 %.
Test populations are directly compared with a reference susceptible population.
In most field populations, both susceptible and resistant mosquitoes
occur. These assays allow m