A study about the evolutionary dynamics and repeatability in time-varying fitness landscapes

Diego Cirne and Paulo R.A. Campos

Physica A: Statistical Mechanics and its Applications, 2022, vol. 585, issue C

Abstract: The present work addresses how seasonal environmental changes affect adaptation and evolutionary predictability in the presence of epistasis for finite-size populations. We assume gene regulation so that different seasons of the environment inflict selective pressures on different set traits each time. The existence of epistasis reduces modularity, and the subsets no longer evolve independently. We show that epistasis enhances oscillation in fitness despite decreased variation at the genotypic level, as revealed by an entropy analysis. Furthermore, the amplitude of oscillations increases with the period of the different phases. We also observe that demography plays a role, and larger populations are associated with larger oscillations and more efficient searches of local optima.

Keywords: Fitness landscapes; Changing environments; NK model; Adaptation levels; Repeatability (search for similar items in EconPapers)
Date: 2022
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:585:y:2022:i:c:s0378437121007263

DOI: 10.1016/j.physa.2021.126453

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