The evolution and maintenance of androdioecy

Détails

ID Serval
serval:BIB_90BDF6CD2FA6
Type
Article: article d'un périodique ou d'un magazine.
Sous-type
Synthèse (review): revue aussi complète que possible des connaissances sur un sujet, rédigée à partir de l'analyse exhaustive des travaux publiés.
Collection
Publications
Titre
The evolution and maintenance of androdioecy
Périodique
Annual Review of Ecology and Systematics
Auteur(s)
Pannell J.R.
ISSN
0066-4162
Statut éditorial
Publié
Date de publication
2002
Peer-reviewed
Oui
Volume
33
Pages
397-425
Langue
anglais
Résumé
Examples of androdioecy, the coexistence of males and hermaphrodites, was unknown when the subject was last reviewed about two decades ago. Since then, several examples have been discovered in both plants and animals, and we are now in a position to reappraise theoretical work on the subject. Whereas early ideas were framed largely in terms of the invasion of males into hermaphroditic populations, all of the clearest examples of androdioecy now known appear to have evolved from dioecy. There are strong indications that this has occurred repeatedly as a result of the selection of self-fertile hermaphroditism for reproductive assurance during colonization. Male frequencies in these species are highly variable, self-fertilization in hermaphrodites is delayed, and mating opportunities appear to depend strongly on population density. Results from theoretical work on the evolution and maintenance of androdioecy in single populations and in metapopulations are summarized, and several case studies of androdioecious plants and animals are reviewed.
Mots-clé
dioecy, gynodioecy, hermaphroditism, metapopulation, fitness-gain curves
Web of science
Création de la notice
22/09/2011 16:04
Dernière modification de la notice
03/03/2018 19:26
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