Why cooperation is not running away

Geoffroy, Félix; Baumard, Nicolas; André, Jean‐Baptiste

doi:10.1101/316117

Cited by 4 publications

(2 citation statements)

References 107 publications

(152 reference statements)

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“…Our results highlighting the importance of IGEs arising from the social environment are consistent with theoretical findings that plasticity in partner choice can lead to runaway cooperation—but only until it reaches an optimum level where it is then counterbalanced by reduced payoffs (Geoffroy et al. ). Recent empirical studies suggest that IGEs on resource donation and elicitation can be of a considerable magnitude and affect the tempo and direction of evolutionary change.…”

Section: Discussionsupporting

confidence: 90%

Social runaway: Fisherian elaboration (or reduction) of socially selected traits via indirect genetic effects

Bailey

2019

Evolution

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Our understanding of the evolutionary stability of socially selected traits is dominated by sexual selection models originating with R. A. Fisher, in which genetic covariance arising through assortative mating can trigger exponential, runaway trait evolution. To examine whether nonreproductive, socially selected traits experience similar dynamics—social runaway—when assortative mating does not automatically generate a covariance, we modeled the evolution of socially selected badge and donation phenotypes incorporating indirect genetic effects (IGEs) arising from the social environment. We establish a social runaway criterion based on the interaction coefficient, ψ, which describes social effects on badge and donation traits. Our models make several predictions. (1) IGEs can drive the original evolution of altruistic interactions that depend on receiver badges. (2) Donation traits are more likely to be susceptible to IGEs than badge traits. (3) Runaway dynamics in nonsexual, social contexts can occur in the absence of a genetic covariance. (4) Traits elaborated by social runaway are more likely to involve reciprocal, but nonsymmetrical, social plasticity. Models incorporating plasticity to the social environment via IGEs illustrate conditions favoring social runaway, describe a mechanism underlying the origins of costly traits, such as altruism, and support a fundamental role for phenotypic plasticity in rapid social evolution.

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Section: Discussionsupporting

confidence: 90%

Social runaway: Fisherian elaboration (or reduction) of socially selected traits via indirect genetic effects

Bailey

2019

Evolution

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“…To our knowledge, all models published so far on the evolution of cooperation by partner choice focus on situations where finding a partner is sufficient to create an opportunity to cooperate. In this case, they show that partner choice can drive the evolution of cooperation in a relatively wide range of circumstances (Noë and Hammerstein, 1994; Johnstone and Bshary, 2008; Aktipis, 2004; McNamara et al, 2008; Aktipis, 2011; Barclay, 2011; André and Baumard, 2011a,b; Campennì and Schino, 2014; Debove et al, 2015, 2017; Geoffroy et al, 2019). In this paper, we wish to examine what happens on the contrary when re-source availability constitutes a constraint on the operation of partner choice.…”

Section: Introductionmentioning

confidence: 97%

Nothing better to do? Environment quality and the evolution of cooperation by partner choice

Ecoffet¹,

Bredèche²,

André

2020

Preprint

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The effects of partner choice have been documented in a large number of biological systems such as sexual markets, inter-specific mutualisms, or human cooperation. By contrast, this mechanism has never been demonstrated in a large number of intra-specific interactions in non-human animals such as collective hunts, although one would expect it to play a role as well.Here we use individual-based simulations to solve this apparent paradox. We show that the conditions for partner choice to operate are in fact restrictive. They entail that individuals can compare social opportunities and choose the best. The challenge is that social opportunities are often rare because they necessitate the co-occurrence of (i) at least one available partner, and (ii) a resource to exploit together with this partner. This has three consequences. Firstly, partner choice cannot lead to the evolution of cooperation when resources are scarce, which explains that this mechanism could never be observed in many cases of intraspecific cooperation in animals. On the other hand, partner choice can operate when partners constitute in themselves a resource, which is the case in sexual interactions and inter-specific mutualisms. Lastly, partner choice can lead to the evolution of cooperation when individuals are highly efficient at finding resources in their environment, which sheds light on the relationship between cognitive abilities and cooperation, in particular in the human species.

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Nothing better to do? Environment quality and the evolution of cooperation by partner choice

Ecoffet¹,

Bredèche²,

André

2021

Journal of Theoretical Biology

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Why cooperation is not running away

Abstract: 14A growing number of experimental and theoretical studies show the importance of partner choice 15 as a mechanism to promote the evolution of cooperation, especially in humans. In this paper, we

Cited by 4 publications

References 107 publications

Social runaway: Fisherian elaboration (or reduction) of socially selected traits via indirect genetic effects

Social runaway: Fisherian elaboration (or reduction) of socially selected traits via indirect genetic effects

Nothing better to do? Environment quality and the evolution of cooperation by partner choice

Nothing better to do? Environment quality and the evolution of cooperation by partner choice

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