highly significantp < 0.001
Effects of the Removal of the Spermatheca on Female’s Overwintering After 3 months, there was a highly significant difference in the survival rates of queens among the different treatment groups (QZC = 6/30 (20%), QSS = 3/30 (10%), QCK = 20/30 (66.7); χ 2 (2) = 25.42, p < 0.001; Figure 4 a).