Fig. 4

Relationship between age and dispersal in southern Kruger (logistic regression). Regression line: probability of being a candidate disperser. Upper and lower lines: upper and lower limit of the 95% confidence interval of the regression line. Data points: proportion of DNA not coming from the local cluster (cluster 2, right axis). Light blue diamonds: > 80% of DNA not coming from the local cluster and therefore considered as candidate dispersers; dark blue diamonds: > 40% of DNA coming from the local cluster therefore considered as candidate residents. Dependent variable: candidate disperser status (value = 1: candidate disperser, proportion of DNA that was not assigned to the local cluster > 80%, n_individuals = 37; value = 0: candidate resident, n_individuals = 27), χ2-value model = 20.5, d.f. = 2, P_model = 0.000036, P_age = 0.00058, P_age2 = 0.00070. Sex was not significant when added to the regression model (P_sex = 0.78)