Search results for "abeille"
showing 7 items of 7 documents
Olfactory attraction of the hornet Vespa velutina to honeybee colony odors and pheromones.
2014
19 pages; International audience; Since the beginning of the last century, the number of biological invasions has continuously increased worldwide. Due to their environmental and economical consequences, invasive species are now a major concern. Social wasps are particularly efficient invaders because of their distinctive biology and behavior. Among them, the yellow-legged hornet, Vespa velutina, is a keen hunter of domestic honeybees. Its recent introduction to Europe may induce important beekeeping, pollination, and biodiversity problems. Hornets use olfactory cues for the long-range detection of food sources, in this case the location of honeybee colonies, but the exact nature of these c…
Pestizid-Gemische sind für Bienen schädlicher als angenommen
2021
Black currant project: Multidisciplinary approach to agro-ecological measures
2022
The decline of wild pollinators leads to a drastic drop in the associated ecosystem service, resulting in significant lossesin agricultural yields. The production of blackcurrant “Noir de Bourgogne” could potentially be tripled, if populationsof wild pollinators were restored. Various agroecological measures beneficial to pollinators are discussed here, as wellas ongoing experimental tests. We discuss the practical possibilities of implementing these measures by blackcurrantgrowers as well as the technical locks that still exist. The return to an agroecological equlibrium for which pollinationbecomes again a free ecosystem service for agriculture, requires the integration of multiple agroec…
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…
Évaluation de la valeur pollinisatrice de la flore adventice de différents systèmes de culture
2017
EAGESTAD INRA; Les adventices dans les écosystèmes agricoles, en bord de champ comme dans la parcelle, sont une source de nectars et de pollen pour les pollinisateurs. Un indicateur évaluant la valeur pollinisatrice à partir des traits floraux a été développé pour différents groupes, abeilles, bourdons, syrphes, d’une part et papillons de l’autre. Deux méthodes d’agrégation de cet indicateur avec les sorties du modèles FLORSYS sont testées pour un ensemble de 181 systèmes de culture simulés sous FLORSYS.
The anatomical models of Dr Auzoux, an industrial success in the service of veterinary medicine
2013
Dr. Louis Auzoux (1797-1880) is known all over the world for the anatomical models made of papier maché he produced and exported over the world. If the models related to human aesthetics are more reknown, they are far from being the only ones that the famous industrialist has designed and marketed; animals, plants and especially flowers, are another facet of his art. Models dedicated to horse had a special significance for the company. The horses made of paper, the series of bones defects and jaw he created were massively bought by the administration of the war to provide the regiments the pedagogical materials necessary to train recruits. Through these fascinating objects, this is a progra…
L’apiculture dans la plaine des Vosges, Synthèse de l’atelier participatif du 05 avril 2022 à Vittel
2022
National audience; Ce document de synthèse présente les premiers résultats d’un atelier participatif conduit sur trois territoires du département des Vosges en avril 2022. Centrées sur la contribution de l’apiculture à la dynamique d’écologisation du territoire, ces tables rondes avaient pour objectif d’identifier les principaux enjeux de l’apiculture, les espaces propices et problématiques à l’apiculture ainsi que les initiatives favorables à l’activité apicole au sein de chacun de ces territoires. Ces échanges étant par ailleurs couplés à un exercice de spatialisation. Cet atelier participatif a notamment permis de révéler que l’apiculture et l’abeille sont des indicateurs de la qualité é…