Search results for "INSECT"
showing 10 items of 2033 documents
Evolutionary ecology of the trans-generational immune priming in an insect
2012
Trans-generational immune priming (TGIP) is defined as the plastic enhancement of offspring's immunocompetence following an immune challenge of the females of the parental generation. In vertebrates, this phenomenon is well described, and is achieved by the maternal transfer of antibodies. In invertebrates however, it has only recently been described. Since invertebrates do not possess antibodies, the mechanism of this transmission remains unknown. If the offspring is exposed to the maternal infection, an elevated immunocompetence can help it cope better with it. Nonetheless, apart from this benefit, several cues indicate that the TGIP bears some fitness costs for individuals. The evolution…
How to explain the introduction of common ragweed into Europe during the XIXth century?
2012
EA EcolDur (équipe CAPA) CT3; Various reasons can explain the success of A. artemisiifolia in France and in Europe :* introduction of plants from various sources (in space and time)* strong variability (morphology, size, etc.) * ecological plasticityDifferent situations across areas and countriesThe dominant habitats and the spread vector can differPotentially strong effects of the landscape (soil use)
Connaissances nécessaires à la gestion du risque "écorces sensibles au nématode du pin"
2018
Connaissances nécessaires à la gestion du risque "écorces sensibles au nématode du pin"
Characterization of chemicals involved in honeybee-plants interactions
1994
A possible oviposition deterring pheromone in the European corn borer
1991
Allelochemicals mediating foraging behaviour : the bee-sunflower model
1991
chap. 13; International audience
Animal and plant cytochrome P-450 systems
1987
International audience
Grape cultivar affects larval and female fitness of the European grapevine moth, Lobesia botrana (Lepidoptera: Tortricidae)
2005
8 pages; International audience
Criteres moleculaires impliques dans la relation abeille-plante : une approche biologique et chimique
1987
National audience
Chemical basis of plant-insect relationships: the honeybee - sunflower model
1987
International audience