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- W2133313295 abstract "Polymorphism in traits affecting dispersal occurs in a diverse variety of taxa. Typically, the maintenance of a dispersal polymorphism is attributed to environmental heterogeneity where parental bet-hedging can be favored. There are, however, examples of dispersal polymorphisms that occur across similar environments. For example, the estuarine polychaete Streblospio benedicti has a highly heritable offspring dimorphism that affects larval dispersal potential. We use analytical models of dispersal to determine the conditions necessary for a stable dispersal polymorphism to exist. We show that in asexual haploids, sexual haploids, and in sexual diploids in the absence of overdominance, asymmetric dispersal is required in order to maintain a dispersal polymorphism when patches do not vary in intrinsic quality. Our study adds an additional factor, dispersal asymmetry, to the short list of mechanisms that can maintain polymorphism in nature. The region of the parameter space in which polymorphism is possible is limited, suggesting why dispersal polymorphisms within species are rare." @default.
- W2133313295 created "2016-06-24" @default.
- W2133313295 creator A5048410492 @default.
- W2133313295 creator A5077879759 @default.
- W2133313295 date "2012-05-02" @default.
- W2133313295 modified "2023-10-16" @default.
- W2133313295 title "Asymmetric Dispersal Can Maintain Larval Polymorphism: A Model Motivated by Streblospio benedicti" @default.
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- W2133313295 doi "https://doi.org/10.1093/icb/ics055" @default.
- W2133313295 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4817586" @default.
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