Polymorphic social organization in an ant.

Détails

Ressource 1Télécharger: BIB_7A0121928647.P001.pdf (400.85 [Ko])
Etat: Serval
Version: Author's accepted manuscript
ID Serval
serval:BIB_7A0121928647
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Polymorphic social organization in an ant.
Périodique
Proceedings. Biological sciences / The Royal Society
Auteur(s)
Gill R.J., Arce A., Keller L., Hammond R.L.
ISSN
1471-2954[electronic]
Statut éditorial
Publié
Date de publication
2009
Peer-reviewed
Oui
Volume
276
Numéro
1677
Pages
4423-4431
Langue
anglais
Résumé
Identifying species exhibiting variation in social organization is an important step towards explaining the genetic and environmental factors underlying social evolution. In most studied populations of the ant Leptothorax acervorum, reproduction is shared among queens in multiple queen colonies (polygyny). By contrast, reports from other populations, but based on weaker evidence, suggest a single queen may monopolize all reproduction in multiple queen colonies (functional monogyny). Here we identify a marked polymorphism in social organization in this species, by conclusively showing that functional monogyny is exhibited in a Spanish population, showing that the social organization is stable and not purely a consequence of daughter queens overwintering, that daughter queen re-adoption is frequent and queen turnover is low. Importantly, we show that polygynous and functionally monogynous populations are not genetically distinct from one another based on mtDNA and nDNA. This suggests a recent evolutionary divergence between social phenotypes. Finally, when functionally monogynous and polygynous colonies were kept under identical laboratory conditions, social organization did not change, suggesting a genetic basis for the polymorphism. We discuss the implications of these findings to the study of reproductive skew.
Mots-clé
colony structure, functional monogyny, Leptothorax acervorum, multiple queen, polygyny, reproductive skew, REPRODUCTIVE-SKEW MODELS, MULTIPLE-QUEEN ANT, LEPTOTHORAX-ACERVORUM HYMENOPTERA, SPLIT SEX-RATIOS, ANIMAL SOCIETIES, POLYGYNOUS ANT, FUNCTIONAL MONOGYNY, MATING FREQUENCY, COLONY STRUCTURE, RELATEDNESS
Pubmed
Web of science
Création de la notice
31/08/2009 10:25
Dernière modification de la notice
03/03/2018 18:33
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