Figure 1.
Effects of generation time, T, on the genetic drift per time step, σdg2, and the ratio of effective population size to census (total) population size, Ne/N, in populations with different mating systems and different levels of persistent individual differences in mating success among males; (a) c = 0 (no persistent differences), (b) c = 0.5 and (c) c = 1. See §2 for a more detailed description of the parameter c. Different mating systems are represented by the variance in annual male mating success, which is equal to 1 (solid lines), 2 (long dash), 5 (short dash) and 10 (dotted). Generation time is increased by increasing the annual survival probability, s from 0 (T = 1) to 0.8 (T = 5), simultaneously decreasing the expected number of offspring per female from 2 to 0.4. Other parameters are sex ratio at birth, q = 0.5, and age at maturity, r = 1.