Individual and social information gathering are fine-tuned to the internal state of the group

Gottlieb, Daphna; Phillips, Benjamin B.; Sendova-Franks, Ana B.; Franks, Nigel R.

Abstract

It is well known that the environment a group inhabits influences the frequency at which its members
use information gained from one another, that is, social information. However, the potential link between
internal state (i.e. individual and social physiology) and use of social information has received little
attention. This is surprising as it is known that internal state has profound effects on group behaviour in
many group-living animals and especially eusocial insects. Energy reserves are a particularly important
determinant of internal state and have been predicted to affect the use of social information. However,
empirical studies on foraging dynamics of ants subjected to different durations of food deprivation
supply conflicting evidence. We investigated how information is gained by the tandem-running ant,
Temnothorax albipennis,when the colony had been fed compared to when it had been deprived of food.
Our results indicate that both individual and social information gathering occurred significantly more
when the colony had been deprived of food and that both werefine-tuned to internal state. We found no
strong evidence that social information gathering increased more quickly with an increased perceived
level of starvation. We suggest that differences between colonies in their internal state can be an
explanation for the inconsistencies among previous studies regarding whether low food availability
increases or decreases the benefit of acquiring social information.

• Journal Article Type: Article
• Publication Date: Jun 1, 2013
• Journal: Animal Behaviour
• Print ISSN: 0003-3472
• Publisher: Elsevier Masson
• Peer Reviewed: Peer Reviewed
• Volume: 85
• Issue: 6
• Pages: 1479-1484
• Keywords: information transfer, internal state, rock ant, tandem run, Temnothorax albipennis
• Public URL: https://uwe-repository.worktribe.com/output/931384
• Publisher URL: http://www.sciencedirect.com/science/article/pii/S0003347213001681