Abstract：
:How life-history strategies influence the evolution of populations is not well understood. Most existing models stem from the Wright-Fisher model which considers discrete generations and a fixed population size, thus not taking into account any potential consequences of overlapping generations and demographic stochasticity on allelic frequencies. We introduce an individual-based model in which both population size and genotypic frequencies at a single bi-allelic locus are emergent properties of the model. Demographic parameters can be defined so as to represent a large range of r and K life-history strategies in a stable environment, and appropriate fixed effective population sizes are calculated so as to compare our model to the Wright-Fisher diffusion. Our results indicate that models with fixed population size that stem from the Wright-Fisher diffusion cannot fully capture the consequences of demographic stochasticity on allele fixation in long-lived species with low reproductive rates. This discrepancy is accentuated in the presence of demo-genetic feedback. Furthermore, we predict that populations with K life-histories should maintain lower genetic diversity than those with r life-histories.
journal_name
Heredity (Edinb)journal_title
Heredityauthors
Abu Awad D,Coron Cdoi
10.1038/s41437-018-0118-6subject
Has Abstractpub_date
2018-10-01 00:00:00pages
374-386issue
4eissn
0018-067Xissn
1365-2540pii
10.1038/s41437-018-0118-6journal_volume
121pub_type
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