Complementary landmarks facilitate ant navigation

Hunt, E. , Kendall, C. , Stanbury, E. , Sendova-Franks, A. and Franks, N. (2018) Complementary landmarks facilitate ant navigation. Behavioural Processes, 157. pp. 702-710. ISSN 0376-6357 Available from:

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Visual landmarks are important navigational aids to many animals, and when more than one is available their juxtaposition can convey valuable new information to a navigator about progress toward a goal, depending on the landmarks’ comparative distinctiveness. We investigated the effect of presenting rock ant colonies (Temnothorax albipennis) with identical horizontal landmarks either side of their route, versus one horizontal landmark paired with a sloping landmark, as they navigated to a new nest site. Our findings suggest that ants can obtain more navigational information from a combination of dissimilar landmarks: the average tortuosity of the route taken between old and new nests was significantly lower when a horizontal landmark was paired with a monotonically downward sloping landmark (the paths were more direct). The impact on available navigational information from the similarity or dissimilarity of nearby landmarks is likely made through more distinctive visual panoramas, and could be an influential factor in individual and collective animal decision-making about which routes are followed. Furthermore, the effect of landmark complementarity may be relevant to a wide range of species, such as navigating honey bees relying on multiple landmarks, for example a straight line of trees and the sloping brow of a hill.

Item Type: Article
Uncontrolled Keywords: complementary, landmarks, facilitate, ant, navigation
Faculty/Department: Faculty of Environment and Technology > Department of Engineering Design and Mathematics
Depositing User: Dr A. Sendova-Franks
Date Deposited: 12 Mar 2018 12:24
Last Modified: 02 Dec 2018 20:55


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