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J Theor Biol

Title:		Exploration versus exploitation in polydomous ant colonies
Author(s):		Cook Z; Franks DW; Robinson EJ;
Address:		"York Centre for Complex Systems Analysis, University of York, York, YO10 5DD, UK. zc505@york.ac.uk"
Journal Title:		J Theor Biol
Year:		2013
Volume:		20130201
Issue:
Page Number:		49 - 56
DOI:		10.1016/j.jtbi.2013.01.022
ISSN/ISBN:		1095-8541 (Electronic) 0022-5193 (Linking)
Abstract:		"In socially foraging species resource information can be shared between individuals, increasing foraging success. In ant colonies, nestmate recruitment allows high exploitation rates at known resources however, to maximise foraging efficiency this must be balanced with searching for new resources. Many ant species form colonies inhabiting two or more spatially separated but socially connected nests: this type of organisation is known as polydomy. Polydomous colonies may benefit from increased foraging efficiency by carrying out dispersed-central place foraging. However, decentralisation of the colony may affect recruitment success by limiting interaction between ants based in separate nests. We use an agent-based model which compares the foraging success of monodomous and polydomous colonies in different food environments, incorporating recruitment through pheromone trails and group foraging. In contrast to previous results we show that polydomy is beneficial in some but not all cases. Polydomous colonies discover resources at a higher rate, making them more successful when food is highly dispersed, but their relative success can be lowered by limitations on recruitment success. Monodomous colonies can have higher foraging efficiency than polydomous colonies by exploiting food more rapidly. The results show the importance of interactions between recruitment strategy, colony size, and colony organisation"
Keywords:		Animals Ants/*physiology Computer Simulation Exploratory Behavior/*physiology Feeding Behavior Pheromones/metabolism *Social Behavior;
Notes:		"MedlineCook, Zoe Franks, Daniel W Robinson, Elva J H eng Research Support, Non-U.S. Gov't England 2013/02/06 J Theor Biol. 2013 Apr 21; 323:49-56. doi: 10.1016/j.jtbi.2013.01.022. Epub 2013 Feb 1"