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Salinity is one of the main abiotic factors that impact survival and fitness of terrestrial insects in coastal environments. Indeed, hypersaline environments induce osmotic stress disturbing the cellular homeostasis, the structure and fluidity of cell membranes or again denaturating proteins...

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Physiological resistance to salinity in the invasive ground beetle Merizodus soledadinus at the Kerguelen Islands; or how the physiology helps insect species to invade new habitats?

OTHER PROJECTS

Phenotypic plasticity to resist the desiccating dry season in the malarial mosquitoes Anopheles gambiae & An. coluzzii in West Africa

In dry savannahs of West Africa, the malarial mosquitoes Anopheles coluzzii and An. gambiae swarm during the rainy season but almost disappear at the onset of the dry season. Interestingly, the ecological and physiological bases enhancing the survival of these insects during the desiccating conditions of the dry season remain unknown, and hard to understand with field studies...

MAIN CURRENT PROJECT

Ecophysiological and molecular responses to thermal stress in the parasitoid wasp Nasonia vitripennis

Changes of thermal conditions mainly influence the life cycle and fitness of ectothermic species. In the parasitic wasps, Nasonia vitripennis, short exposure to heat stress during ontogenesis strongly decline the sperm production. Nasonia vitripennis is a haplo-diploid species, suggesting its offspring sex-ratio and population structure essentially depend on the male reproductive quality. Therefore, investigate how temperature fluctuations influence fitness and development of male N. vitripennis is a major concern in a context of global warming and the rearing of haplo-diploid agronomic auxiliaries... 

In humans, exposure to pesticides is mainly due to feeding. Controlling and limiting pesticide ingestion thus represents major healthy challenges in the next decades. Because the direct control of pesticide residues in environment is difficult, one prominent solution to preserve human and animal health is to offer alternative tools allowing larger and routine monitoring of pesticide exposure along a continuum of food production (i.e. from field to plate). Indeed, to date, agencies for sanitary safety and environmental surveys use efficient but very costly and hazardous methods measuring pesticide residues and their metabolites in a restrictive subset of food samples.

Research of highly specific end metabolic product biomarkers to pesticide contamination:

Example of an approach from field to plate in food production lines

ENDED PROJECTS

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