Perenniality induces high inbreeding depression in self-fertilising species

Abu Awad, Diala; Billiard, Sylvain; Tran, Chi

Type de document :

Article dans une revue scientifique: Article original

DOI :

10.1016/j.tpb.2016.08.002

Titre :

Perenniality induces high inbreeding depression in self-fertilising species

Auteur(s) :

Abu Awad, Diala [Auteur]
Évolution, Écologie et Paléontologie (Evo-Eco-Paleo) - UMR 8198 [Evo-Eco-Paléo (EEP)]
Institut National de la Recherche Agronomique [INRA]
Billiard, Sylvain [Auteur]

Évolution, Écologie et Paléontologie (Evo-Eco-Paleo) - UMR 8198 [Evo-Eco-Paléo (EEP)]
Tran, Chi [Auteur]

Laboratoire Paul Painlevé - UMR 8524 [LPP]

Titre de la revue :

Theoretical Population Biology

Pagination :

43-51

Éditeur :

Elsevier

Date de publication :

2016

ISSN :

0040-5809

Mot(s)-clé(s) en anglais :

perennial
self-fertilisation
genetic load
population size,
inbreeding depression
demography

Discipline(s) HAL :

Sciences du Vivant [q-bio]/Génétique/Génétique des populations [q-bio.PE]

Résumé en anglais : [en]

When predicting the fate and consequences of recurring deleterious mutationsin self-fertilising populations most models developed make the assumptionthat populations have discrete non-overlapping generations. This makesthem ...
Lire la suite >When predicting the fate and consequences of recurring deleterious mutationsin self-fertilising populations most models developed make the assumptionthat populations have discrete non-overlapping generations. This makesthem biologically irrelevant when considering perennial species with overlappinggenerations and where mating occurs independently of the age group.The few models studying the effect of perennial life-histories on the geneticproperties of populations in the presence of self-fertilisation have done soconsidering age-dependent selection. They find low levels of inbreeding depressionin perennial populations that do not explain empirical observations.Here we propose a simple deterministic model in continuous time with selectionat different fitness traits and feedback between population fitnessand size. We find that a perennial life-history can result in high levels ofinbreeding depression in spite of inbreeding, due to higher frequencies of heterozygousindividuals at the adult stage. We also propose that there may bedemographic advantages for self-fertilisation that are independent of reproductivesuccess.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Projet ANR :

Centre Européen pour les Mathématiques, la Physique et leurs Interactions

Commentaire :

AGAP : équipe GE2pop

Collections :

Laboratoire Paul Painlevé - UMR 8524

Source :

Harvested from HAL

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