Sociogenomics of Cooperation and Conflict during Colony Founding in the Fire Ant Solenopsis invicta.

Détails

Ressource 1Télécharger: BIB_10435BBC8C49.P001.pdf (1045.16 [Ko])
Etat: Serval
Version: Final published version
ID Serval
serval:BIB_10435BBC8C49
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Sociogenomics of Cooperation and Conflict during Colony Founding in the Fire Ant Solenopsis invicta.
Périodique
PLoS Genetics
Auteur(s)
Manfredini F., Riba-Grognuz O., Wurm Y., Keller L., Shoemaker D., Grozinger C.M.
ISSN
1553-7404 (Electronic)
ISSN-L
1553-7390
Statut éditorial
Publié
Date de publication
2013
Peer-reviewed
Oui
Volume
9
Numéro
8
Pages
e1003633
Langue
anglais
Résumé
One of the fundamental questions in biology is how cooperative and altruistic behaviors evolved. The majority of studies seeking to identify the genes regulating these behaviors have been performed in systems where behavioral and physiological differences are relatively fixed, such as in the honey bee. During colony founding in the monogyne (one queen per colony) social form of the fire ant Solenopsis invicta, newly-mated queens may start new colonies either individually (haplometrosis) or in groups (pleometrosis). However, only one queen (the "winner") in pleometrotic associations survives and takes the lead of the young colony while the others (the "losers") are executed. Thus, colony founding in fire ants provides an excellent system in which to examine the genes underpinning cooperative behavior and how the social environment shapes the expression of these genes. We developed a new whole genome microarray platform for S. invicta to characterize the gene expression patterns associated with colony founding behavior. First, we compared haplometrotic queens, pleometrotic winners and pleometrotic losers. Second, we manipulated pleometrotic couples in order to switch or maintain the social ranks of the two cofoundresses. Haplometrotic and pleometrotic queens differed in the expression of genes involved in stress response, aging, immunity, reproduction and lipid biosynthesis. Smaller sets of genes were differentially expressed between winners and losers. In the second experiment, switching social rank had a much greater impact on gene expression patterns than the initial/final rank. Expression differences for several candidate genes involved in key biological processes were confirmed using qRT-PCR. Our findings indicate that, in S. invicta, social environment plays a major role in the determination of the patterns of gene expression, while the queen's physiological state is secondary. These results highlight the powerful influence of social environment on regulation of the genomic state, physiology and ultimately, social behavior of animals.
Pubmed
Web of science
Open Access
Oui
Création de la notice
31/05/2013 11:13
Dernière modification de la notice
08/05/2019 14:33
Données d'usage