2012
DOI: 10.1038/srep00281
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Abstract: Microbes providing public goods are widespread in nature despite running the risk of being exploited by free-riders. However, the precise ecological factors supporting cooperation are still puzzling. Following recent experiments, we consider the role of population growth and the repetitive fragmentation of populations into new colonies mimicking simple microbial life-cycles. Individual-based modeling reveals that demographic fluctuations, which lead to a large variance in the composition of colonies, promote c… Show more

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Cited by 96 publications
(118 citation statements)
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“…This type of bottleneck population dynamics experienced by free-living vibrios has been shown to favor the abundance of cooperators in public good games (27,28). On the other hand, the constant high cell densities in the local environment of particle-attached bacteria could favor the establishment of cheaters that "scrounge" public goods from producers (29).…”
Section: Resultsmentioning
confidence: 99%
“…This type of bottleneck population dynamics experienced by free-living vibrios has been shown to favor the abundance of cooperators in public good games (27,28). On the other hand, the constant high cell densities in the local environment of particle-attached bacteria could favor the establishment of cheaters that "scrounge" public goods from producers (29).…”
Section: Resultsmentioning
confidence: 99%
“…In well-mixed populations, cooperation cannot be maintained when defection emerges unless mechanisms promoting cooperation are present, such as repetition, punishment, or rewarding. Nonetheless, in small groups of cooperators that are bound to be invaded by defectors stochastic effects can have a beneficial impact (Cremer et al, 2012), leading to a possible delay of the extinction of cooperation. Nowak (2012) summarizes important steps in the understanding of cooperation from an evolutionary perspective, and also points out future challenges in the experimental study of human cooperation.…”
Section: Discussionmentioning
confidence: 99%
“…However, the current understanding of most systems where randomness is frozen or amplified is far from being complete. A recent study on group formation in small growing populations, for instance, shows that the fraction of one trait within the population (for example, cooperators) can be subject to strong fluctuations as a result of the amplification of stochastic fluctuations generated during the initial phase of the dynamics 46,47 .…”
Section: Discussionmentioning
confidence: 99%