Pesticide Resistance
Lab #3003 — Evolution of Resistance & Management Strategies
Population Genetics
Initial resistance freq:
0.005
Pesticide efficacy (s):
0.95
Dominance (h):
0.50
Fitness cost of resistance:
0.05
Refuge fraction:
0.20
Spray frequency:
every 1 yr
Evolution Status
Resistance allele freq
—
% Resistant individuals
—
Population size
—
Control efficacy
—
Generation
—
☠ Apply Pesticide Now
↻ Rotate Pesticide
▶ Run Evolution
↺ Reset
Hardy-Weinberg:
under selection, resistant allele (q) increases. Dominance h controls heterozygote phenotype. Fitness cost slows fixation when spraying stops.
Refuge strategy:
untreated area maintains susceptible alleles, diluting resistance in gene pool.