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Figure 1 | BMC Evolutionary Biology

Figure 1

From: The emergence of leaders and followers in foraging pairs when the qualities of individuals differ

Figure 1

Examples of policies and population state distributions for identical players. a) Typical policy (i) and stable population distribution (ii) for an individual where there is no advantage to foraging with a co-player. The policy shows the optimal behaviour for an individual when its own energetic reserve values and those of its coplayer are known, where a black square means the focal individual should 'forage' during the period, and a white square means that it should 'rest'. (predation risk when foraging alone, m A , is equal to the predation risk when foraging with a co-player, m T : m A = m T = 0.0005; all other parameters set with defaults values as detailed in table 3). b) Typical policy (i) and stable population (ii) where there is an advantage to foraging together: parameters as in table 3; c) another form of policy (i) and its associated stable population (ii) where there is an advantage to foraging together, where symmetry of policy in the central area round the main diagonal ensures that players are synchronised: parameters as in table 3, except c max = 3 state units, m A = 0.0004, m R = 0.00002, m T = 0.00012.

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