Abstract
The interplay of demographic and environmental variance is considered in a behavioral context involving foraging in the presence of uncertain, fluctuating risk of predation. The evolutionary contest between two strategies — high risk and high fecundity versus low risk and low fecundity — is considered. Often the risky strategy will be dominant when it is sufficiently abundant in the population. Demographic (sampling) variance, however, implies that either strategy may be at a disadvantage when rare. In a phenotypic model the stable strategy may be determined by initial conditions and by chance. In a genetic model, polymorphism may be maintained if the risky strategy is heterozygotic.
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Clark, C.W., Yoshimura, J. (1993). Optimization and ESS Analysis for Populations in Stochastic Environments. In: Yoshimura, J., Clark, C.W. (eds) Adaptation in Stochastic Environments. Lecture Notes in Biomathematics, vol 98. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-51483-8_6
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DOI: https://doi.org/10.1007/978-3-642-51483-8_6
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