Figure 2.

Recognition locus diversity and cooperation are affected by the benefit of cooperation to the recipient, the mating system and the mode of recognition.m < 0 corresponds to disassortative mating, while m > 0 represents assortative mating. Panels A and C: if outcrossed matings do not affect the number of surviving offspring (x = 0), cooperative behaviour typically erodes recognition locus diversity. Panels B and D: if outcrossed matings produce more offspring (x > 0), both cooperation and variable recognition cues can persist. All figures assume the following parameter space: N = 6, c = 1, k = 5, r = 0.05, d = 0.1, μ = 10-5 and h = 1.

Holman et al. BMC Evolutionary Biology 2013 13:211   doi:10.1186/1471-2148-13-211
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