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Foraging behavior of tagged rock ants (Temnothorax rugatulus)

Taylor, Benjamin1; Rajagopal, Supraja1; Sasaki, Takao1

Published Nov 28, 2023 on Dryad. https://doi.org/10.5061/dryad.xksn02vn0

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Nov 28, 2023 version files 35.23 KB

Abstract

Technological advances continue to push the boundaries of scientific inquiry in animal behavior. One such development is the emergence of automated tracking systems, which enable the collection of high-resolution spatio-temporal information for animals. Although tag-based tracking systems provide valuable insights into animal movement and collective behavior, the attachment of devices can have detrimental effects in some cases. Here, we investigated the effects of recently developed miniature tracking tags using the rock ant, Temnothorax rugatulus, as a model system. To do so, we compared the foraging activities of tagged ants and untagged ants (who lost their tags) within initially fully-tagged colonies. Additionally, we compared the foraging activities of these initially fully-tagged colonies with those of no-tag control colonies (no one was tagged). We found that tags did not significantly reduce individual activity, with tagged ants visiting the food source as frequently as untagged ants within initially fully-tagged colonies. However, our analysis revealed a marked difference in recruitment behavior—tagged ants were less likely to participate in tandem runs than untagged ants. Furthermore, the number of tandem runs was higher for the no-tag control colonies than the initially fully-tagged colonies, in which 69–95% of colony members had tags. Our data suggest, for the first time, that tracking tags can negatively impact ant behavior. Although tracking devices are powerful tools for understanding complex behavioral patterns, it is crucial to carefully consider their potential impact on animal behavior to ensure accurate conclusions.