Abstract:
: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, including other insects or birds, and highlights the possibility that there is an intrinsic difference in the informational content of natural vs. artificial environments.
journal_name
Behav Processesjournal_title
Behavioural processesauthors
Hunt ER,Kendall C,Stanbury E,Sendova-Franks AB,Franks NRdoi
10.1016/j.beproc.2018.03.004subject
Has Abstractpub_date
2018-12-01 00:00:00pages
702-710eissn
0376-6357issn
1872-8308pii
S0376-6357(18)30015-9journal_volume
157pub_type
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