Table 2.
Genotype frequencies observed (Obs) vs. expected (Exp) under Hardy–Weinberg equilibrium. Pooled data across samplings. SS: homozygotes for the sensitive allele, SR: heterozygotes, and RR: homozygotes for the resistance allele; Obs: observed number of mites; Exp: expected number of mites under Hardy–Weinberg equilibrium; p, departure of the observed genotype frequencies from those expected under Hardy–Weinberg equilibrium; ***, p < 0.001, as estimated by means of a chi-square test of goodness of fit.
| Sampling Period | SS | SR | RR | p | |
|---|---|---|---|---|---|
| Autumn 2018 | Obs | 747 | 50 | 21 | |
| Exp | 728.6 | 86.8 | 2.6 | *** | |
| Spring 2019 | Obs | 75 | 8 | 3 | |
| Exp | 72.6 | 12.9 | 0.6 | *** | |
| Autumn 2019 | Obs | 459 | 117 | 36 | |
| Exp | 437.6 | 159.8 | 14.6 | *** |