Abstract
Temporal variation in the environment is generally thought to be less efficient in maintaining genetic polymorphism than spatial variation. However, if there is delayed germination or diapause, in some situations the conditions for genetic polymorphism are greatly broadened in a temporally variable environment. For a model with absolute dominance which means that there can be no type of heterozygous advantage, the upper bound is no longer the geometric mean and the lower bound may not be the arithmetic mean of the fitnesses over environments. In some situations, there is an unstable equilibrium present as well as the stable equilibrium.
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Chesson, P L. 1983. Coexistence of competitors in a stochastic environment: the storage effect. Lec Notes in Biomath, 54, 188–198.
Chesson, P L, and Warner, R R. 1981. Environmental variability promotes coexistence in lottery competitive system. Am Nat, 117, 923–943.
Christiansen, F B. 1974. Sufficient conditions for protected polymorphism in a subdivided population. Am Nat, 108, 157–166.
Dempster, E. 1955. Maintenance of genetic heterogeneity. Cold Spring Harb Symp Quant Biol, 20, 25–32.
Elner, S, and Hairston, N G. Jr. 1994. Role of overlapping generations in maintaining genetic variation in a fluctuating environment. Am Nat, 14, 403–417.
Frank, S A, and Slatkin, M. 1990. Evolution in a variable environment. Am Nat, 136, 244–260.
Gillespie, J H. 1976. A general model to account for enzyme variation in natural populations. II. Characterization of the fitness functions. Am Nat, 110, 809–821.
Hairston, N G, and De Stasio, B T. 1988. Rate of evolution slowed by a dormant propagule pool. Nature, 336, 239–242.
Hedrick, P W. 1986. Genetic polymorphism in heterogeneous environments: a decade later. Ann Rev Ecol Syst, 17, 535–566.
Hedrick, P W. 1990a. Theoretical analysis of habitat selection and the maintenance of genetic variation. In: Barker, J. S. F., Starmer, W. T. and Maclntyre, R. J. (eds) Ecological and Evolutionary Genetics of Drosophila, pp. 209–227. Plenum Press, New York.
Hedrick, P W. 1990b. Genotypic-specific habitat selection: a new model and its application. Heredity, 65, 145–149.
Hedrick, P W, Ginevan, M E, and Ewing, E P. 1976. Genetic polymorphism in heterogeneous environments. Ann Rev Ecol Syst, 7, 1–33.
Hoekstra, R F, Bijlsma, R, and Dolman, A J. 1985. Polymorphism from environmental heterogeneity: models are only robust if the heterozygote is close in fitness to the favoured homozygote in each environment. Genet Res, 45, 299–314.
Leck, M A, Parker, V T, and Simpson, R L. (eds). 1989. Ecology of Seed Banks. Academic Press, New York.
Levene, H. 1953. Genetic polymorphism when more than one ecological niche is available. Am Nat, 87, 331–333.
Prout, T. 1968. Sufficient conditions for multiple niche polymorphisms. Am Nat, 102, 493–496.
Seger, J, and Brockman, H J. 1987. What is bet-hedging? Oxford Surv Evol Biol, 4, 182–211.
Shmida, A, and Ellner, S. 1984. Coexistence of plant species with similar niches. Vegetatio, 58, 29–55.
Templeton, A R, and Levin, D A. 1979. Evolutionary consequences of seed pools. Am Nat, 114, 232–249.
Venable, D L. 1989. Modeling the evolutionary ecology of seed banks. In: Leek, M. A., Parker, V. T. and Simpson, R. L. (eds) Ecology of Seed Banks, pp. 67–87. Academic Press, New York.
Acknowledgements
I appreciate the comments of Nelson Hairston and Michael Turelli on the manuscript and discussions with John Gillespie, Michael Turelli and Larry Venable on the models that I investigated.
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Hedrick, P. Genetic polymorphism in a temporally varying environment: effects of delayed germination or diapause. Heredity 75, 164–170 (1995). https://doi.org/10.1038/hdy.1995.119
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DOI: https://doi.org/10.1038/hdy.1995.119
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