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Seasonality in communication and collective decision-making in ants
N Stroeymeyt1, C Jordan, G Mayer
1School of Biological Sciences, University of Bristol, , Bristol BS8 1UG, UK, Centre de Recherches sur la Cognition Animale, Université de Toulouse, , Toulouse, France, Centre de Recherches sur la Cognition Animale, CNRS, , Toulouse, France.
Proceedings. Biological Sciences
|February 14, 2014
Summary
Animal behavior adapts to seasons, with ants using a special pheromone to guide nest choices. This pheromone impacts colony decisions, prioritizing cohesion over accuracy during seasonal changes.
Area of Science:
- Animal Behavior
- Ecology
- Entomology
Background:
- Animal behavioral adjustment to seasonal changes is vital for fitness.
- Eusocial insects exhibit collective behavioral seasonality, but underlying mechanisms are unclear.
Purpose of the Study:
- Investigate the mechanisms of collective behavioral seasonality in Temnothorax albipennis ant colonies.
- Determine the role of a season-specific modulatory pheromone in nest preference and decision-making.
Main Methods:
- Studied nest preference in emigrating Temnothorax albipennis ant colonies.
- Analyzed the effect of a modulatory pheromone on nest evaluation and colony cohesion.
Main Results:
- A season-specific pheromone influences nest preference, promoting aversion to low-quality nests and enhancing cohesion in summer/autumn.
- The pheromone downgrades perceived nest value, impacting both informed and naive individuals.
- This violation of individual independence increases decision errors but enhances cohesion and information transmission.
Conclusions:
- Collective decisions may prioritize cohesion and information transfer over accuracy.
- Seasonal constraints can shape decision-making strategies in social insects.
- Modulatory pheromones play a key role in tuning collective behavior to ecological seasonality.
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