Nonmonotonic Effects of Migration in Subdivided Populations

被引：16
|
作者：
Lombardo, Pierangelo [1 ,2 ]
Gambassi, Andrea [1 ,2 ]
Dall'Asta, Luca [3 ,4 ]
机构：
[1] SISSA Int Sch Adv Studies, I-34136 Trieste, Italy
[2] Ist Nazl Fis Nucl, I-34136 Trieste, Italy
[3] Politecn Torino, Dept Appl Sci & Technol DISAT, I-10129 Turin, Italy
[4] Coll Carlo Alberto, I-10024 Moncalieri, Italy
来源：
PHYSICAL REVIEW LETTERS | 2014年 / 112卷 / 14期
关键词：
FIXATION PROBABILITY; OVERDOMINANT SELECTION; EVOLUTIONARY DYNAMICS; BALANCING SELECTION; MUTANT GENES; APPROXIMATION; POLYMORPHISM; MUTATION; ALLELES; MALARIA;
D O I：
10.1103/PhysRevLett.112.148101
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The influence of migration on the stochastic dynamics of subdivided populations is still an open issue in various evolutionary models. Here, we develop a self-consistent mean-field-like method in order to determine the effects of migration on relevant nonequilibrium properties, such as the mean fixation time. If evolution strongly favors coexistence of species (e. g., balancing selection), the mean fixation time develops an unexpected minimum as a function of the migration rate. Our analysis hinges only on the presence of a separation of time scales between local and global dynamics, and therefore, it carries over to other nonequilibrium processes in physics, biology, ecology, and social sciences.
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页数：5
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