Signalling receptivity: Comparison of the emission of volatile compounds by figs of Ficus hispida before, during and after the phase of receptivity to pollinators - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Symbiosis Année : 2008

Signalling receptivity: Comparison of the emission of volatile compounds by figs of Ficus hispida before, during and after the phase of receptivity to pollinators

Résumé

Figs and pollinating fig wasps are involved in highly specific mutualisms. Because associations between figs and their pollinating wasps are horizontally transmitted, partner encounter is a crucial step, and is mediated by the emission by receptive figs of the volatile compounds that are detected by the pollinator. However, pollinator attraction is probably not the only function of the volatile compounds produced by figs. Other likely functions include signalling to wasps that a fig has already been pollinated, and deterring or defending against visitors with negative effects on developing figs or the pollinators they contain. The functions of volatile compounds will also change over the course of fig development, and the composition of the odour bouquet is thus also likely to vary. However, this variation and its likely functional importance have rarely been studied. To address these questions, we investigated changes in the composition of the bouquet of volatile compounds, and in the rate of emission of odour components, before, during and after the phase of receptivity to pollinators in Ficus hispida, in Yunnan (China). This first study of the dynamics of variation in signal composition throughout the cycle of fig development, provides support for the hypothesis of chemical mimicry in dioecious figs.
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hal-04313737 , version 1 (29-11-2023)

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  • HAL Id : hal-04313737 , version 1

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Magali Proffit, Bertrand Schatz, Jean-Marie Bessière, Chun Chen, Catherine C L Soler, et al.. Signalling receptivity: Comparison of the emission of volatile compounds by figs of Ficus hispida before, during and after the phase of receptivity to pollinators. Symbiosis, 2008, 45 (1-3), pp.15-24. ⟨hal-04313737⟩
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