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Advisor(s)
Abstract(s)
Group living animals may eavesdrop on signalling interactions between conspecifics in order to
collect adaptively relevant information obtained from others, without incurring in the costs of firsthand
information acquisition. This ability (aka social eavesdropping) is expected to impact Darwinian
fitness, and hence predicts the evolution of cognitive processes that enable social animals to use
public information available in the environment. These adaptive specializations in cognition may have
evolved both at the level of learning and memory mechanisms, and at the level of input mechanisms,
such as attention, which select the information that is available for learning. Here we used zebrafish
to test if attention in a social species is tuned to the exchange of information between conspecifics.
Our results show that zebrafish are more attentive towards interacting (i.e. fighting) than towards
non-interacting pairs of conspecifics, with the exposure to fighting not increasing activity or stress
levels. Moreover, using video playbacks to manipulate form features of the fighting fish, we show
that during the assessment phase of the fight, bystanders’ attention is more driven by form features
of the interacting opponents; whereas during the post-resolution phase, it is driven by biological
movement features of the dominant fish chasing the subordinate fish.
Description
Keywords
Citation
Scientific Reports, 5, Article 12678. doi: 10.1038/srep12678
Publisher
Nature Publishing Group