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Collective movement decision-making in primates in crop-raiding contexts
Shaurabh Anand1, Sindhu Radhakrishna1
1Animal Behavior and Cognition Programme, School of Natural Sciences and Engineering, National Institute of Advanced Studies, Bengaluru 560012, Karnataka, India.
Behavioural Processes
|February 8, 2022
Summary
Rhesus macaques exhibit equally shared decision-making during crop-raiding, with all age-sex groups participating in leading group movements. This contrasts with predictions of unshared decision-making in risky foraging situations.
Area of Science:
- Primate behavior
- Animal ecology
- Behavioral ecology
Background:
- Wildlife crop-raiding involves group movement and complex decision-making.
- Risks and rewards in crop-raiding exceed those in natural foraging.
- Consensus decision-making in wildlife crop-raiding remains understudied.
Purpose of the Study:
- To investigate the decision-making processes in rhesus macaques during crop-raiding.
- To determine if rhesus macaques display unshared consensus during risky crop-raiding movements.
Main Methods:
- Observation of two rhesus macaque groups during crop-raiding events.
- Data collection on movement and foraging behavior.
- Analysis of collective movement and decision-making patterns.
Main Results:
- Collective crop-raiding movements were primarily initiated by single individuals.
- All age-sex categories of rhesus macaques led crop-raiding movements.
- Contrary to predictions, equally shared decision-making was observed.
Conclusions:
- Rhesus macaques demonstrate a tendency towards equally shared decision-making in crop-raiding.
- Group movements during crop-raiding involve participation across all age-sex classes.
- Findings challenge assumptions about unshared decision-making in high-risk foraging.
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