Figure 4

Maximum-likelihood estimates of the long-term migration rates (M) and the mutation-scaled effective population size (Θ) in each of three Eucalyptus hybrid zones (a–c) using the methods of MIGRATE-N. Thickness of the arrows indicates the directional migration rate estimates (M=m/u, where m is the migration rate, and u is the mutation rate). Values in parenthesis indicate the 95% CIs.