Dynamic workforce modulation and foraging efficiency in Eusocial insect colonies.

Ant colonies modulate departure and return rates of foragers to activate reserve workers, which stabilizes colony energetics and scales with colony size.

• Why it matters: Understanding how eusocial insects optimize foraging under fluctuating conditions can reveal fundamental mechanisms of social evolution and colony resilience, addressing gaps in behavioral ecology.
• What they did: Researchers integrated an energetic-balance framework with stochastic search simulations based on four Aphaenogaster senilis colonies, analyzing how workforce dynamics influence colony viability.
• The result: Findings indicate that larger colonies require a disproportionately larger workforce to maintain positive energy balance, with workforce modulation enabling efficient foraging and energetic stability.