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Directional raids by army ants as an adaption to patchily distributed food: a simulation model

Title
Directional raids by army ants as an adaption to patchily distributed food: a simulation model
Authors
Song, Won CheolKim, Ho YoungLee, Sang-imJablonski, Piotr G.
DGIST Authors
Song, Won Cheol; Kim, Ho Young; Lee, Sang-im; Jablonski, Piotr G.
Issue Date
2018-07
Citation
Animal Cells and Systems, 22(4), 267-272
Type
Article
Article Type
Article
Author Keywords
Army antforagingraidsimulation
ISSN
1976-8354
Abstract
A typical colony of Neotropical army ants (subfamily Ecitoninae) regularly raids a large area around their bivouac by forming a narrow directional column that can reach up to one hundred meters in length. The raid is finished and then relaunched 12–17 times, each time toward different orientation. After completing all bouts the colony relocates to a new area. A hypothetical alternative to this foraging mode is raiding radially and symmetrically by expanding the search front in every direction like a circular bubble. Using an existing agent-based modeling software that simulates army ants’ behavior, we compared the two possible modes of foraging in different food distributions. Regardless of the food patch abundance, the radial raiding was superior to the directional raiding when food patches had low quality, and the directional raiding was favorable when the patches were rich. In terms of energy efficiency, the radial raiding was the better strategy in a wide range of conditions. In contrast, the directional raiding tended to yield more food per coverage area. Based on our model, we suggest that the directional raiding by army ants is an adaptation to the habitats with abundance of high-quality food patches. This conclusion fits well with the ecology of army ants. © 2018 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group
URI
http://hdl.handle.net/20.500.11750/9061
DOI
10.1080/19768354.2018.1497708
Publisher
Taylor and Francis Ltd.
Related Researcher
Files:
Collection:
Department of New BiologyLab of Integrative Animal Ecology1. Journal Articles


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