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Comment
. 2021 Aug 31;118(35):e2107652118.
doi: 10.1073/pnas.2107652118.

Cooperation, with friends or with relatives?

Olof Leimar  1 , Peter Hammerstein  2
Affiliations
Comment

Cooperation, with friends or with relatives?

Olof Leimar et al. Proc Natl Acad Sci U S A. .
No abstract available

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Conflict of interest statement

The authors declare no competing interest.

Figures

Fig. 1.
Fig. 1.
The evolutionary stability of the standing strategy does not depend on relatedness. (A) In an island model metapopulation, with 100 subpopulations each of size 100, the standing strategy dominates against the alternatives image scoring (IS), always cooperation (C), and always defection (D), irrespective of the rate of dispersal, including for full dispersal (m = 1; the points for IS and C are shifted right and left for clarity). The gray curve shows FST. (B) Without the standing strategy, IS persists at intermediate frequency together with C for low rates of dispersal, but D takes over for higher rates of dispersal. The triangles show a situation with only C and D, for which D dominates irrespective of m, as a consequence of kin competition. Individual-based simulations are over 10,000 generations for each of m = 0.01, 0.05, 0.10, 0.20, 0.30, 0.40, 0.50, 0.75, and 1.00. Other parameters are as in figure 4 of ref. : 500 rounds of interaction, helping benefit 1.0 and cost 0.25, 5% execution errors, and mutation rate of 0.001.
See this image and copyright information in PMC

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References

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