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Published on: October 12, 2018
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Ants show a leftward turning bias when exploring unknown nest sites
Edmund R Hunt1, Thomas O'Shea-Wheller2, Gregory F Albery3
1School of Biological Sciences, University of Bristol, Life Sciences Building, 24 Tyndall Avenue, Bristol BS8 1TQ, UK edmund.hunt@bristol.ac.uk.
Biology Letters
|December 26, 2014
Summary
Temnothorax albipennis ants exhibit a consistent leftward turning bias when exploring new environments. This innate behavior aids in efficient navigation and may have evolutionary advantages for the colony.
Area of Science:
- Ethology
- Animal Behavior
- Evolutionary Biology
Background:
- Behavioral lateralization offers insights into the evolutionary origins of handedness in diverse species.
- Understanding invertebrate lateralization is key to tracing its ancient development.
Purpose of the Study:
- To investigate and present evidence for a turning bias in the exploration behavior of Temnothorax albipennis ants.
- To explore the potential ecological and evolutionary implications of this observed bias.
Main Methods:
- Observing Temnothorax albipennis ants during exploration of nest cavities.
- Analyzing ant navigation in branching maze environments, accounting for thigmotaxis.
Main Results:
- A significant leftward turning bias was identified in ant exploration.
- This bias was initially masked by thigmotaxis (wall-following) in maze navigation.
- The turning bias is proposed as a simple, effective decision-making heuristic.
Conclusions:
- The observed leftward turning bias in ants is a crucial element of their exploration strategy.
- Colony-level replication of this bias could enhance predator avoidance and facilitate faster decision-making for nest migration.
- This behavior likely evolved from an interplay of visual, exploratory, and migratory factors, reinforced by the ants' social structure.

