The influence of contact rates on the efficiency (the ability to exploit a profitable environment) and flexibilty (the ability to track a changing environment) of foraging in ants is studied theoretically in the case where foraging relies on a mixture of group and mass recruitment. It is shown that a combination of efficiency and flexibility can be reached across a range of group sizes (1) mass recruitment is combined with a low level of group recruitment, and (2) contact rates are weakly regulated. These results are discussed in relation to empirical work.
To appear in: J. Theor. Biol.
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Paper provided by Santa Fe Institute in its series Working Papers with number
98-07-063.