Fig. 4

Pairing to birth interval (A) and number of pups born (B) in spiny mice paired at different stages of the menstrual cycle. Average time to litter down and number of pups born were similar across all cycle stages where ejaculation was seen. Data are mean ± SD and statistical significance set at p < 0.05. ANOVA for birth interval: F2,7 = 2.590, P = 0.1439. ANOVA for number of pups: F2,7 = 0.1000, P = 0.9061