Fitting a quasibinomial GLM (dispersion = 5.47) showed the increase in M1% with generation number was significant for females (estimate: 0.37, t = 2.28, df = 6, p < 0.05) and bordered on significance for males (estimate: 0.28, t = 1.78, df = 6, p = 0.06).
Analysis of deviance of a quasibinomial generalized linear model (GLM, with dispersion parameter 2.89) showed highly significant effects of both population (χ 2 = 14.96, df = 2, p < < 0.001) and the natural logarithm of generation number (χ 2 = 15.66, df = 1, p < < 0.001).
Overall, there is a clear trend for remating frequency to increase with the degree of domestication of both the first pairing (logistic regression estimate: 0.87, z-value = 2.28, p < < 0.001) and the second male (estimate: 0.25, z-value = 2.85, p < < 0.001).