Search results for "Honeybee"
showing 2 items of 12 documents
Pyrethroids alter sodium channel gating in honeybee olfactory receptor neurons
2010
International audience; Social structure in a domestic honeybee colony relies on inter-individual. chemical communication. Chemical communication is mediated. by odors and pheromones detected by olfactory receptor. neurons (ORN) localized in antennae. The Colony Collapse Disorder. (CCD) has been described in many countries around the world. and one of its main symptoms is the desertion of the hive by adult. worker bees, leaving the queen with brood and a small number of. young bees only. Our hypothesis is that such a desertion could be a. consequence of a disruption in the colony cohesion due to a defective. peripheral olfactory system. Recent studies have shown that. several insecticides c…
Contribution des pollinisateurs dans la production de colza et de tournesol en zone atelier « Plaine et Val de Sèvre »
2018
Insect pollination is essential for over 70% of crops around the world. However, the contribution of pollinators to crop production and the insects involved in crop pollination have rarely been studied. Moreover, assessments of pollinator contributions have mostly been conducted on a small scale or under simplified conditions, which do not represent the real contributions at the field scale and do not take into account possible interactions between pollinators and farming practices. The aim of this study is to quantify directly under field conditions, the contribution of pollinators in two crops frequently cultivated in Europe: oilseed rape and sunflower. Estimations are realized both at th…