Social experience modifies pheromone expression and mating behavior in male Drosophila melanogaster.

Détails

ID Serval
serval:BIB_D5EF150DF96E
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Social experience modifies pheromone expression and mating behavior in male Drosophila melanogaster.
Périodique
Current Biology
Auteur(s)
Krupp J.J., Kent C., Billeter J.C., Azanchi R., So A.K., Schonfeld J.A., Smith B.P., Lucas C., Levine J.D.
ISSN
0960-9822
Statut éditorial
Publié
Date de publication
09/2008
Peer-reviewed
Oui
Volume
18
Numéro
18
Pages
1373-1383
Langue
anglais
Résumé
BACKGROUND: The social life of animals depends on communication between individuals. Recent studies in Drosophila melanogaster demonstrate that various behaviors are influenced by social interactions. For example, courtship is a social interaction mediated by pheromonal signaling that occurs more frequently during certain times of the day than others. In adult flies, sex pheromones are synthesized in cells called oenocytes and displayed on the surface of the cuticle. Although the role of Drosophila pheromones in sexual behavior is well established, little is known about the timing of these signals or how their regulation is influenced by the presence of other flies. RESULTS: We report that oenocytes contain functional circadian clocks that appear to regulate the synthesis of pheromones by controlling the transcription of desaturase1 (desat1), a gene required for production of male cuticular sex pheromones. Moreover, levels of these pheromones vary throughout the day in a pattern that depends on the clock genes and most likely also depends on the circadian control of desat1 in the oenocytes. To assess group dynamics, we manipulated the genotypic composition of social groups (single versus mixed genotypes). This manipulation significantly affects clock gene transcription both in the head and oenocytes, and it also affects the pattern of pheromonal accumulation on the cuticle. Remarkably, we found that flies in mixed social groups mate more frequently than do their counterparts in uniform groups. CONCLUSIONS: These results demonstrate that social context exerts a regulatory influence on the expression of chemical signals, while modulating sexual behavior in the fruit fly.
Mots-clé
Animals, Biological Clocks, Circadian Rhythm/physiology, Drosophila Proteins/genetics, Drosophila melanogaster/anatomy &amp, histology, Drosophila melanogaster/genetics, Fatty Acid Desaturases/genetics, Female, Gene Expression Regulation, Male, Pheromones/biosynthesis, Pheromones/genetics, Sexual Behavior, Animal/physiology, Social Behavior
Pubmed
Web of science
Open Access
Oui
Création de la notice
05/09/2008 15:22
Dernière modification de la notice
20/08/2019 15:55
Données d'usage