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Antagonistic pleiotropy can maintain fitness variation in annual plants
Author(s) -
Brown K. E.,
Kelly J. K.
Publication year - 2018
Publication title -
journal of evolutionary biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.289
H-Index - 128
eISSN - 1420-9101
pISSN - 1010-061X
DOI - 10.1111/jeb.13192
Subject(s) - biology , fecundity , pleiotropy , trade off , selection (genetic algorithm) , ecology , longevity , evolutionary biology , genetics , phenotype , population , demography , gene , artificial intelligence , sociology , computer science
Antagonistic pleiotropy ( AP ) is a genetic trade‐off between different fitness components. In annual plants, a trade‐off between days to flower ( DTF ) and reproductive capacity often determines how many individuals survive to flower in a short growing season, and also influences the seed set of survivors. We develop a model of viability and fecundity selection informed by many experiments on the yellow monkeyflower, Mimulus guttatus , but applicable to many annual species. A viability/fecundity trade‐off maintains stable polymorphism under surprisingly general conditions. We also introduce both spatial heterogeneity and temporal stochasticity in environmental parameters. Neither is necessary for polymorphism, but spatial heterogeneity allows polymorphism while also generating the often observed non‐negative correlations in fitness components.