Time-optimized path choice in the termite-hunting ant Megaponera analis

The Journal of Experimental Biology
Erik Thomas FrankKarl Eduard Linsenmair

Abstract

Trail network systems among ants have received a lot of scientific attention because of their various applications in problem solving of networks. Recent studies have shown that ants select the fastest available path when facing different velocities on different substrates, rather than the shortest distance. The progress of decision making by these ants is determined by pheromone-based maintenance of paths, which is a collective decision. However, path optimization through individual decision making remains mostly unexplored. Here, we present the first study of time-optimized path selection via individual decision making by scout ants. Megaponera analis scouts search for termite-foraging sites and lead highly organized raid columns to them. The path of the scout determines the path of the column. Through installation of artificial roads around M. analis nests, we were able to influence the pathway choice of the raids. After road installation, 59% of all recorded raids took place completely or partly on the road, instead of the direct, i.e. distance-optimized, path through grass from the nest to the termites. The raid velocity on the road was more than double that on the grass, and the detour thus saved 34.77±23.01% of the trave...Continue Reading

References

Sep 1, 2006·The Journal of Experimental Biology·Tobias MerkleRüdiger Wehner
Dec 28, 2007·Proceedings of the National Academy of Sciences of the United States of America·Stefan SommerRüdiger Wehner
Dec 4, 2008·Behavioural Processes·Ken ChengRüdiger Wehner
Dec 15, 2010·The Journal of Experimental Biology·Chris R ReidMadeleine Beekman
Feb 1, 1994·Trends in Ecology & Evolution·C W Clark
Mar 30, 2011·PLoS Computational Biology·Holk Cruse, Rüdiger Wehner
Aug 3, 2016·The Journal of Experimental Biology·Pauline N FleischmannRüdiger Wehner
Apr 26, 2017·Science Advances·Erik Thomas FrankKarl Eduard Linsenmair

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Citations

Oct 6, 2019·The Journal of Experimental Biology·Felix B OberhauserTomer J Czaczkes

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