On the evolutionary edge of migration as an assortative mating device |
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| Authors: | Oded Stark Doris A. Behrens Yong Wang |
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| Affiliation: | (1) University of Bonn, Walter-Flex-Strasse 3, D-53113 Bonn, Germany;(2) University of Klagenfurt, Universitaetsstrasse 65–67, A-9020 Klagenfurt, Austria;(3) University of Vienna, Vienna, Austria;(4) Warsaw University, Warsaw, Poland;(5) Warsaw School of Economics, Warsaw, Poland;(6) City University of Hong Kong, Kowloon, Hong Kong |
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| Abstract: | In a haystack-type representation of a heterogeneous population that is evolving according to a payoff structure of a prisoner’s dilemma game, migration is modeled as a process of ‘swapping’ individuals between heterogeneous groups of constant size after a random allocation fills the haystacks, but prior to mating. Migration is characterized by two parameters: an exogenous participation-in-migration cost (of search, coordination, movement, and arrangement-making) which measures the migration effort, and an exogenous technology—of coordinating and facilitating movement between populated haystacks and the colonization of currently unpopulated haystacks—which measures the migration intensity. Starting from an initially heterogeneous population that consists of both cooperators and defectors, a scenario is postulated under which ‘programmed’ migration can act as a mechanism that brings about a long-run survival of cooperation. |
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| Keywords: | Haystacks-type model Prisoner’ s dilemma game Inclination to migrate Cost of migration Evolution of cooperation Taste for migration |
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