Testing demographic models of effective population size.
Détails
Etat: Public
Version: de l'auteur⸱e
ID Serval
serval:BIB_7636E371AC14
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Testing demographic models of effective population size.
Périodique
Proceedings of the Royal Society of London B Biological Sciences
ISSN
0962-8452[print]
Statut éditorial
Publié
Date de publication
2001
Volume
268
Numéro
1464
Pages
311-317
Langue
anglais
Notes
IZEAIDF5B427FDE5F6_
Résumé
Due to practical difficulties in obtaining direct genetic estimates of effective sizes, conservation biologists have to rely on so-called 'demographic models' which combine life-history and mating-system parameters with F-statistics in order to produce indirect estimates of effective sizes. However, for the same practical reasons that prevent direct genetic estimates, the accuracy of demographic models is difficult to evaluate. Here we use individual-based, genetically explicit computer simulations in order to investigate the accuracy of two such demographic models aimed at investigating the hierarchical structure of populations. We show that, by and large, these models provide good estimates under a wide range of mating systems and dispersal patterns. However, one of the models should be avoided whenever the focal species' breeding system approaches monogamy with no sex bias in dispersal or when a substructure within social groups is suspected because effective sizes may then be strongly overestimated. The timing during the life cycle at which F-statistics are evaluated is also of crucial importance and attention should be paid to it when designing field sampling since different demographic models assume different timings. Our study shows that individual-based, genetically explicit models provide a promising way of evaluating the accuracy of demographic models of effective size and delineate their field of applicability.
Mots-clé
Alleles, Animals, Demography, Female, Genetic Variation, Male, Models, Genetic, Population Density, Sex Characteristics, Sexual Behavior, Social Behavior
Pubmed
Web of science
Création de la notice
24/01/2008 18:53
Dernière modification de la notice
20/08/2019 15:33