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Fig. 2 | BMC Biology

Fig. 2

From: Honesty in signalling games is maintained by trade-offs rather than costs

Fig. 2

Cost/benefit trade-off functions for two traditional signalling games. Left: An additive offspring begging game. Right: A multiplicative mate choice signalling game. Dashed vertical lines indicate the receiver’s and the signaller’s optimal amount of resource, given a signaller’s quality or condition. Trade-off function T, when added to or multiplied by B, transforms the signaller’s benefit B to its actual fitness wS such that its optimum amount of requested resource a coincides with the amount z shared by the receiver

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