Reproductive skew in the Australian allodapine bee Exoneura robusta
Détails
Etat: Public
Version: de l'auteur⸱e
ID Serval
serval:BIB_2359B5E165CA
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Reproductive skew in the Australian allodapine bee Exoneura robusta
Périodique
Animal Behaviour
ISSN
0003-3472
Statut éditorial
Publié
Date de publication
01/2006
Peer-reviewed
Oui
Volume
71
Pages
193-201
Notes
Part 1 004PK Times Cited:2 Cited References Count:63 --- Old month value: Jan
Résumé
Uneven sharing of reproduction (reproductive skew) among members of a cooperative animal society is one of the key features associated with advanced sociality and task specialization. Allocation of reproduction varies greatly among taxa, and reproductive skew models are evolutionary models that aim at explaining this variation. We tested reproductive skew theory using the Australian social allodapine bee Exoneura robusta. Reproductive skew was negatively correlated with relatedness, as predicted by the so-called tug-of-war model and the restraint model. Both models assume that a dominant breeder in a society does not have full control over the allocation of reproduction among group members, in contrast to classical concession models. Overall, the tug-of-war model seems to account better for the evolution of reproductive sharing in E. robusta than the restraint model. However, neither model can be ruled out, and a tug-of-war as well as a restraint model mechanism could apply in parallel in newly founded and overwintered colonies, respectively. This raises the possibility that skew models are not mutually exclusive and points to a more dynamic view on reproductive partitioning among breeders of an animal society. (c) 2005 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd. All rights reserved.
Mots-clé
primitively social bee animal societies bicolor hymenoptera sex-ratios group-size evolution model associations wasp anthophoridae
Web of science
Open Access
Oui
Création de la notice
24/01/2008 19:38
Dernière modification de la notice
20/08/2019 14:01