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I'm studying the adaptations & evolution of plant - pollinator interactions using Araceae as the plant family model. I'm using a multidisciplinary approach combining evolutionary ecology, botany, entomology, morphology, histology, behavioral ecology, molecular biology and chemical ecology.
Deceptive pollination often involves volatile organic compound (VOC) emissions that mislead insects into performing non-rewarding pollination. Among deceptively pollinated plants, Arum maculatum is particularly well-known for its potent dung-like VOC emissions and specialized floral chamber, which traps pollinators—mainly Psychoda phalaenoides and...
Floral scent is a key mediator in plant-pollinator interactions. However, little is known to what extent intraspecific scent variation is shaped by phenotypic selection, with no information yet in deceptive plants. In this study, we collected inflorescence scent and fruit set of the deceptive moth fly-pollinated Arum maculatum L. (Araceae) from six...
Data on the pollination biology of neotropical aroids are still scarce and concern only a few species (Beath 1999, Croat 1997, Gibernau et al . 1999, 2000; Mayo et al . 1997 and references cited therein). It appears from these studies that Anthurium , Monstera and Spathiphyllum are on the whole pollinated mainly by bees (but see Kraemer & Schmitt 1...
We studied interspecific and ontogenetic relationships between the size of a leaf and the primary diameter of the internode bearing it. Although these two variables are known to be strongly correlated across species, the form of this relationship has not been studied. In a re-analysis of published data on interspecific comparisons of 69 temperate t...
This multidisciplinary project aims to investigate the mechanisms and dynamics of inter-specific biological interactions, and the role of different mediating factors on their stability and/or evolution. More precisely, this project is centered on the role of floral VOCs in plant-pollinator associations within the phylogenetic framework of the scarabaeoid tribe Cyclocephalini and the ecological context of the diverse angiosperm taxa sharing a similar highly specialized pollination syndrome
The goal of the project is to find out if Arum maculatum is locally adapted and if this is driven by its pollinator climate north and south of the Alps. Main methods: GC/MS, GC/EAD, bioassays, meta-barcoding, NGS, reciprocal transplant
Tout écosystème est un assemblage dynamique régi par une multitude d'interactions basées, pour l'essentiel, sur des échanges d'informations par médiateurs chimiques interposés. L’écologie chimique regroupe l’ensemble des études organisées autour de ces interactions. Le GDR 3658 du CNRS intitulé MediatEC rassemble les groupes de recherche français autour de ce champ de recherche.