A specialist in sponges from the start of his scientific career, with a general interest in the entire phylum. His main areas of expertise in taxonomy are the Mediterranean, Indo-Pacific and Caribbean. The main points of interest are phylogeny and classification, reproduction, cytology, symbiosis with micro-organisms, research into biactive molecules and the fauna of underwater caves. Of particular interest were hypercalcified sponges, relics of a remarkable fauna of Mesozoic and Palaeozoic reef builders, and carnivorous sponges, whose discovery in a coastal cave demonstrated their wide distribution in bathyal and abyssal zones.
Completion of the description of a collection of Cladorhizidae sponges (carnivores) from the bathyo-abyssal zone of New Zealand, in collaboration with Michelle Kelly, from NIWA (New Zealand): around ten new species.
IMBE – UMR CNRS 7263 / IRD 237 / Aix Marseille Université / Avignon Université.
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