Figure 1.
Kaplan-Meier plots showing the effect of the number of sexually mature male subordinates in the social group on (a) the probability that a male retains dominance, and (b) the probability that a male monopolizes matings.
Three levels of the number of male subordinates are represented: none (0), medium (2) and high (3).
Figure 2.
Kaplan-Meier plot showing the impact of extra-pair paternity at the previous event of reproduction on the probability that a male retains dominance.
The full line represent survival curve where no extra-pair paternity occurred at the previous event of reproduction was observed while the dotted line represent survival curve where extra-pair paternity occurred at the previous event of reproduction.
Figure 3.
Comparison of the competitive abilities of males retaining dominance and males losing dominance.
(a) The grey circles represent the observed residual body masses. The black dots represent the means surrounded by their standard deviation. (b) Comparison of competitive abilities of a given male the year it lost dominance and the years it was dominant. Males having a lower residual body mass the year of dominance loss are represented in black. Males having a higher residual body mass the year of dominance loss are represented in grey.
Figure 4.
Impact of the number of sexually mature male subordinates present in a family group on the residual body mass of the dominant male.
The dots represent the observed data, and the grey line represents the fitted model.