A5053274549- Neurobiology and Insect Physiology Research
- Plant and animal studies
- Insect and Arachnid Ecology and Behavior
- Insect and Pesticide Research
- Insect Pheromone Research and Control
- Insect-Plant Interactions and Control
- Insect Utilization and Effects
- Olfactory and Sensory Function Studies
- Insect Pest Control Strategies
- Biochemical Analysis and Sensing Techniques
- Insect behavior and control techniques
- Forest Insect Ecology and Management
- Multiculturalism, Politics, Migration, Gender
- Animal Behavior and Reproduction
- French Urban and Social Studies
- Entomological Studies and Ecology
- Advanced Chemical Sensor Technologies
- Insect Resistance and Genetics
- Physiological and biochemical adaptations
- Animal and Plant Science Education
- Plant Parasitism and Resistance
- Bee Products Chemical Analysis
- Horticultural and Viticultural Research
- African Botany and Ecology Studies
- Plant biochemistry and biosynthesis
Centre National de la Recherche Scientifique
2016-2025
Évolution, Génomes, Comportement, Écologie
2016-2025
Université Paris-Saclay
2016-2025
Institut de Recherche pour le Développement
2016-2025
AgroParisTech
2014-2024
Université de Rennes
2024
Université Paris-Sud
2016-2020
Université Paris Cité
2017
Institut d'écologie et des sciences de l'environnement de Paris
2014-2016
Sorbonne Université
2007-2016
Abstract Maize plants (Zea mays) attacked by caterpillars release a mixture of odorous compounds that attract parasitic wasps, natural enemies the herbivores. We assessed genetic variability these induced volatile emissions among 31 maize inbred lines representing broad range diversity used breeders in Europe and North America. Odors were collected from young had been injecting them with caterpillar regurgitant. Significant variation was found for all 23 included analysis: differed...
Abstract Taste receptors play a crucial role in detecting the presence of bitter compounds such as alkaloids, and help to prevent ingestion toxic food. In Drosophila , we show for first time that several taste sensilla on prothoracic legs detect both through activation specific neurons but also inhibition activated by sugars water. Each sensillum usually houses cluster four classified according their best stimulus (S sugar, W Water, L1 L2 salts). Using new statistical approach based analysis...
Avoiding toxins in food is as important obtaining nutrition. Conditioned aversions have been studied animals diverse nematodes and humans [1Reilly S. Central gustatory system lesions conditioned taste aversion.in: Reilly Schachtman T.R. Taste Aversion: Behavioral Neural Processes. Oxford University Press, Oxford2009: 309-327Google Scholar, 2Zhang Y. Lu H. Bargmann C.I. Pathogenic bacteria induce aversive olfactory learning Caenorhabditis elegans.Nature. 2005; 438: 179-184Crossref PubMed...
Abstract Textural properties provide information on the ingestibility, digestibility and state of ripeness or decay sources nutrition. Compared with our understanding chemosensory assessment food, little is known about mechanisms texture detection. Here we show that Drosophila melanogaster can discriminate food texture, avoiding substrates are either too hard soft. Manipulations substrate flies' inputs indicate preferences revealed only in presence an appetitive stimulus, but not because...
In flies and humans, bitter chemicals are known to inhibit sugar detection, but the adaptive role of this inhibition is often overlooked. At best, described as contributing rejection potentially toxic food, no studies have addressed relative importance direct pathway that involves activating bitter-sensitive cells versus indirect represented by detection. Using toxins selectively ablate or inactivate populations cells, we assessed behavioral responses sucrose mixed with strychnine (which...
Recent findings have indicated that the Gr genes for putative gustatory receptors of Drosophila melanogaster are expressed in a spatially restricted pattern among chemosensilla on labellum. However, evidence functional segregation is lacking. In this work, labellar were classified and numbered into three groups, L-, I- S-type, based their morphology. Electrophysiological responses to sugars salt recorded from all accessible by tip-recording method. All L-type sensilla gave good terms action...
Abstract In Drosophila , gustatory receptor neurons (GRNs) occur within hair‐like structures called sensilla. Most taste sensilla house four GRNs, which have been named according to their preferred sensitivity basic stimuli: water (W cell), sugars (S salt at low concentration (L1 and high (L2 cell). Labellar are classified into three types, l‐, s‐, i‐type, length location. Of these, l‐ s‐type labellar possess these cells, but most i‐type only two GRNs. sensilla, we demonstrate here that the...
Sexual behavior requires animals to distinguish between the sexes and respond appropriately each of them. In Drosophila melanogaster, as in many insects, cuticular hydrocarbons are thought be involved sex recognition mating behavior, but there is no direct neuronal evidence their pheromonal effect. Using behavioral electrophysiological measures responses natural synthetic compounds, we show that Z-7-tricosene, a male hydrocarbon, acts pheromone inhibits male-male courtship. These data...
Swallowtail butterflies belonging to the family of Papilionidae selectively utilize a limited number plants from single or few families. Female lay eggs on their host only when they detect specific chemicals through foreleg chemosensilla while drumming leaf surface. Here we show that butterfly, Papilio xuthus, uses gustatory receptor for synephrine select its in oviposition behaviour. We identify gene involved recognition an stimulant, synephrine, P. xuthus by combination silico, vitro and...
The modulatory effects of the biogenic amines octopamine and serotonin on pheromonal receptor neurons Mamestra brassicae were investigated. responses to sex pheromone components two cells types (A B) in single male long sensilla trichodea monitored. Cell A B do not respond same compound. response type a pulse major component increased 5 min after injection. Responses other odorants 30 min. In absence any stimulation background firing activity following This was used evaluate kinetics amine...
Drosophila melanogaster adapt their food consumption to internal needs and avoid ingesting noxious molecules. Defects in the genes involved these decisions induce behavioral alterations that are usually screened by monitoring flies feeding 2-choice or no-choice situations. Here, we introduce a new test which groups of given access 6 capillary feeders (MultiCAFE) containing fructose mixed with serial dilution substance. Using quinine, first showed fly density, distance between capillaries,...
Significance Kinin receptors are known in insects to contribute osmotic regulation and expressed the excretory system, Malpighian tubules (renal organs), hindgut. We discovered that Aedes aegypti mosquitoes, which important vectors of human disease, a kinin receptor is also within taste hairs (sensilla) on legs mouthparts. A analog engineered be peptidase resistant activates this with high potency, inhibiting sucrose detection directly at level organs eliciting fast highly aversive response...
Discrimination of edible and noxious food is crucial for survival in all organisms. We have studied the physiology gustatory receptor neurons (GRNs) contact chemosensilla (insect organs) located on antennae moth Heliothis virescens, emphasizing putative phagostimulants deterrents. Sucrose 2 bitter substances quinine sinigrin elicited responses a larger proportion GRNs than inositol, KCl, NaCl, ethanol, firing thresholds were lowest sucrose quinine. Variations GRN composition individual...