Data for Nova, N., Pagliara, R., Gordon, D. M. 2022. Individual variation does not regulate foraging response to humidity in harvester ants. Frontiers Ecology and Evolution
- Differences among groups in collective behavior may arise from responses that all group members share, or instead from differences in the distribution of individuals of particular types. We examined whether the collective regulation of foraging behavior in colonies of the desert red harvester ant (Pogonomyrmex barbatus) depends on individual differences among foragers. Foragers lose water while searching for seeds in hot, dry conditions, so colonies regulate foraging activity in response to humidity. In the summer, foraging activity begins in the early morning when humidity is high, and ends at midday when humidity is low. We investigated whether individual foragers within a colony differ in the decision whether to leave the nest on their next foraging trip as humidity decreases, by tracking the foraging trips of marked individuals. We found that individuals did not differ in response to current humidity. No ants were consistently more likely than others to stop foraging when humidity is low. Each day there is a skewed distribution of trip number: only a few individuals make many trips, but most individuals make few trips. We found that from one day to the next, individual foragers do not show any consistent tendency to make a similar number of trips. These results suggest that the differences among colonies in response to humidity, found in previous work, are due to behavioral responses to current humidity that all workers in a colony share, rather than to the distribution within a colony of foragers that differ in response.
|Type of resource
|December 20, 2021
|December 5, 2022
|January 4, 2022
|Gordon, Deborah M.
|Collective behavior > Decision making
- Use and reproduction
- User agrees that, where applicable, content will not be used to identify or to otherwise infringe the privacy or confidentiality rights of individuals. Content distributed via the Stanford Digital Repository may be subject to additional license and use restrictions applied by the depositor.
- This work is licensed under a Creative Commons Attribution 4.0 International license (CC BY).
- Preferred citation
- Nova, N., Pagliara , R., and Gordon, D. (2021). Data for Nova, N., Pagliara, R., Gordon, D. M. 2022. Individual variation does not regulate foraging response to humidity in harvester ants. Frontiers Ecology and Evolution. Stanford Digital Repository. Available at https://purl.stanford.edu/gr652yp4782
Stanford Research DataView other items in this collection in SearchWorks
Also listed in
Loading usage metrics...