An inhibitory sex pheromone tastes bitter for Drosophila males

Fabien Lacaille, Makoto Hiroi, Robert Twele, Tsuyoshi Inoshita, Daisuke Umemoto, Gérard Manière, Frédéric Marion-Poll, Mamiko Ozaki, Wittko Francke, Matthew Cobb, Claude Everaerts, Teiichi Tanimura, Jean François Ferveur

研究成果: Contribution to journalArticle査読

101 被引用数 (Scopus)

抄録

Sexual behavior requires animals to distinguish between the sexes and to respond appropriately to each of them. In Drosophila melanogaster, as in many insects, cuticular hydrocarbons are thought to be involved in sex recognition and in mating behavior, but there is no direct neuronal evidence of their pheromonal effect. Using behavioral and electrophysiological measures of responses to natural and synthetic compounds, we show that Z-7-tricosene, a Drosophila male cuticular hydrocarbon, acts as a sex pheromone and inhibits male-male courtship. These data provide the first direct demonstration that an insect cuticular hydrocarbon is detected as a sex pheromone. Intriguingly, we show that a particular type of gustatory neurons of the labial palps respond both to Z-7-tricosene and to bitter stimuli. Cross-adaptation between Z-7-tricosene and bitter stimuli further indicates that these two very different substances are processed by the same neural pathways. Furthermore, the two substances induced similar behavioral responses both in courtship and feeding tests. We conclude that the inhibitory pheromone tastes bitter to the fly.

本文言語英語
論文番号e661
ジャーナルPloS one
2
8
DOI
出版ステータス出版済み - 8 15 2007

All Science Journal Classification (ASJC) codes

  • 生化学、遺伝学、分子生物学(全般)
  • 農業および生物科学(全般)
  • 一般

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