Response to a change in the target nest during ant relocation

Area of Science:

• Animal behavior
• Social insect decision-making
• Collective relocation strategies

Background:

• Organisms make spatial and temporal decisions for survival and reproduction.
• Social species require consensus building for group decisions.
• Colony relocation is a critical process impacting survival and reproduction.

Purpose of the Study:

• To investigate the flexibility of colony relocation in Diacamma indicum ants.
• To examine how tandem leaders respond to shifts in target nest location.
• To assess the decision-making process during tandem running.

Main Methods:

• Artificial manipulation of target nest location during colony relocation.
• Observation and analysis of tandem running behavior in Diacamma indicum leaders.
• Quantification of leader re-evaluation, adaptation, and error rates.

Main Results:

• A majority of tandem leaders (N=262) successfully re-evaluated and adapted to a changed target nest.
• Colonies (N=10) reunited at the new target nest in all experimental cases.
• Adaptation to the changed target incurred an additional time cost but minimal error (1.65%).

Conclusions:

• Tandem running in Diacamma indicum allows for flexible decision-making by incorporating option assessment at each step.
• This adaptability is crucial for survival in environments with incomplete information or frequent changes.
• The seemingly primitive recruitment method of tandem running is an effective strategy for complex collective movements.