Bet-hedging across generations can affect the evolution of variance-sensitive strategies within generations.

ABSTRACT: In order to understand how organisms cope with ongoing changes in environmental variability, it is necessary to consider multiple adaptations to environmental uncertainty on different time scales. Conservative bet-hedging (CBH) represents a long-term genotype-level strategy maximizing lineage geometric mean fitness in stochastic environments by decreasing individual fitness variance, despite also lowering arithmetic mean fitness. Meanwhile, variance-prone (aka risk-prone) strategies produce greater variance in short-term payoffs, because this increases expected arithmetic mean fitness if the relationship between payoffs and fitness is accelerating. Using evolutionary simulation models, we investigate whether selection for such variance-prone strategies is counteracted by selection for bet-

SUBMITTER: Haaland TR 

PROVIDER: S-EPMC6939271 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature