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Article Dans Une Revue Journal of Mathematical Biology Année : 2022

Life history traits and dispersal shape neutral genetic diversity in metapopulations

Jimmy Garnier
Pierre Lafontaine

Résumé

Genetic diversity at population scale, depends on species life-history traits, population dynamics and local and global environmental factors. We first investigate the effect of lifehistory traits on the neutral genetic diversity of a single population using a deterministic mathematical model. When the population is stable, we show that semelparous species with precocious maturation and iteroparous species with delayed maturation exhibit higher diversity because their life history traits tend to balance the lifetimes of non reproductive individuals (juveniles) and adults which reproduce. Then, we extend our model to a metapopulation to investigate the additional effect of dispersal on diversity. We show that dispersal may truly modify the local effect of life history on diversity. As a result, the diversity at the global scale of the metapopulation differ from the local diversity which is only described through local life history traits of the populations. In particular, dispersal usually promotes diversity at the global metapopulation scale.
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Dates et versions

hal-03285767 , version 1 (13-07-2021)

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Jimmy Garnier, Pierre Lafontaine. Life history traits and dispersal shape neutral genetic diversity in metapopulations. Journal of Mathematical Biology, 2022, 84 (6), pp.45. ⟨10.1007/s00285-022-01749-9⟩. ⟨hal-03285767⟩
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