Foreign ant queens are accepted but produce fewer offspring.

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Etat: Serval
Version: de l'auteur
ID Serval
serval:BIB_2A9FDF3B0B06
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Foreign ant queens are accepted but produce fewer offspring.
Périodique
Oecologia
Auteur(s)
Holzer B., Chapuisat M., Keller L.
ISSN
0029-8549[print], 0029-8549[linking]
Statut éditorial
Publié
Date de publication
2008
Peer-reviewed
Oui
Volume
157
Numéro
4
Pages
717-723
Langue
anglais
Résumé
Understanding social evolution requires us to understand the processes regulating the number of breeders within social groups and how they partition reproduction. Queens in polygynous (multiple queens per colony) ants often seek adoption in established colonies instead of founding a new colony independently. This mode of dispersal leads to potential conflicts, as kin selection theory predicts that resident workers should favour nestmate queens over foreign queens. Here we compared the survival of foreign and resident queens as well as their relative reproductive share. We used the ant Formica exsecta to construct colonies consisting of one queen with workers related to this resident queen and introduced a foreign queen. We found that the survival of foreign queens did not differ from that of resident queens over a period of 136 days. However, the genetic analyses revealed that resident queens produced a 1.5-fold higher number of offspring than introduced queens, and had an equal or higher share in 80% of the colonies. These data indicate that some discrimination can occur against dispersing individuals and that dispersal can thus have costs in terms of direct reproduction for dispersing queens.
Mots-clé
Animals, Ants/genetics, Ants/physiology, Competitive Behavior, Female, Genetics, Population, Reproduction/physiology, Sexual Behavior, Animal, Social Dominance
Pubmed
Web of science
Création de la notice
10/06/2008 21:14
Dernière modification de la notice
03/03/2018 15:23
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