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Collective chasing behavior between cooperators and defectors in the spatial prisoner's dilemma
Genki Ichinose1, Masaya Saito, Shinsuke Suzuki
1Systems and Control Engineering, Anan National College of Technology, Anan, Tokushima, Japan.
Plos One
|July 18, 2013
Summary
Mobility coevolves with cooperation, favoring directional migration. This evolutionary chasing dynamic between cooperators and defectors reduces global population extinction rates, enhancing survival.
Area of Science:
- Evolutionary biology
- Game theory
- Population dynamics
Background:
- Cooperation is crucial for evolutionary transitions.
- Migration's impact on cooperation is studied, but coevolution with mobility is unclear.
- Mobility may help cooperators escape defectors or aid defectors in exploiting cooperators.
Purpose of the Study:
- Investigate the coevolutionary dynamics between cooperation and mobility.
- Understand how individual cooperativeness and mobility influence each other.
- Analyze the role of mobility in maintaining cooperation.
Main Methods:
- Utilized the prisoner's dilemma game on a lattice structure.
- Employed computer simulations to model coevolutionary dynamics.
- Examined the evolution of mobility strategies under natural selection.
Main Results:
- Natural selection favors cooperation through an 'evolutionary chasing' dynamic.
- Cooperators form groups that collectively migrate directionally.
- Mobility evolves towards directional migration, not random or fixed movement.
- Directional migration leads to lower global population extinction rates.
Conclusions:
- Cooperation and mobility coevolve dynamically, characterized by directional chasing.
- Evolved directional migration enhances cooperation and population stability.
- This study elucidates the interplay between mobility and cooperation in evolutionary processes.
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