Consistent individual differences in cooperative behaviour in meerkats (Suricata suricatta)

Area of Science:

• Evolutionary biology
• Animal behavior
• Behavioral ecology

Background:

• Theoretical models predict consistent individual differences in cooperative behavior based on game theory and life-history theory.
• Empirical evidence for consistent individual differences in cooperative behavior is scarce.
• Understanding the drivers of cooperation is crucial in evolutionary studies.

Purpose of the Study:

• To quantify the repeatability of cooperative care behaviors (babysitting and provisioning) in wild meerkats.
• To examine how the repeatability of these cooperative behaviors varies across age, sex, and social status.
• To test predictions from life-history theory regarding individual differences in cooperation.

Main Methods:

• Utilized a long-term dataset of wild meerkat behavior.
• Quantified individual contributions to babysitting and provisioning.
• Analyzed the repeatability of these cooperative behaviors within individuals.
• Examined variations in repeatability across demographic categories (age, sex, status).

Main Results:

• Cooperative contributions to babysitting and provisioning were significantly repeatable within individuals.
• Provisioning behavior was more repeatable than babysitting behavior.
• Repeatability of provisioning was consistent across individual categories.
• Babysitting repeatability increased with age and was higher in subordinates than dominants.

Conclusions:

• The findings support theoretical predictions that life-history trade-offs favor the evolution of consistent individual differences in cooperative behavior.
• Individual variation in helping across different cooperative acts suggests underlying mechanisms influencing altruism.
• Further research is needed to understand the specific factors driving consistent individual differences in cooperative strategies.