Early sex differences in sociosexual behavior of wild robust capuchin monkeys: Ontogenetic and evolutionary insights

Key Points

• Sociosexual behavior varies significantly between male and female capuchin monkeys, indicating early developmental differences.
• Males exhibit a more pronounced display of sociosexual behavior, measured through specific interactions observed throughout their early life stages.
• Observational analysis in natural settings led to insights about the ontogeny and evolutionary significance of these behaviors.
• This work highlights the importance of understanding early behavioral differences in addressing broader questions about primate evolution.