6 research outputs found
Nosemosis of honeybees: chronicle of a disappearance in France
La nosĂ©mose Ă
Nosema apis
est une maladie de lâAbeille mellifĂšre classĂ©e danger sanitaire de catĂ©gorie
1. Les données épidémiocliniques récentes indiquent une baisse marquée de son incidence au point
que dâendĂ©mique la maladie pourrait aujourdâhui ĂȘtre requalifiĂ©e de sporadique. ParallĂšlement, de
nouvelles techniques analytiques ont permis de montrer que lâagent causal cohabitait depuis peu
avec une nouvelle espĂšce dâorigine asiatique,
Nosema ceranae
. Ces deux espÚces aux caractéristiques
morphologiques et biologiques proches occupent une mĂȘme niche Ă©cologique : les entĂ©rocytes du
ventricule des abeilles adultes. LâespĂšce Ă©mergente
Nosema ceranae
, dont lâinfection est plutĂŽt
asymptomatique, est aujourdâhui prĂ©dominante. La mondialisation des Ă©changes dâabeilles, les bou-
leversements environnementaux peuvent ĂȘtre des facteurs essentiels Ă lâimplantation de nouveaux
parasites. La disparition progressive de la nosémose en France est un exemple de la complexité des
relations hĂŽtes-parasites ainsi que de notre incapacitĂ© Ă prĂ©voir lâĂ©mergence dâorganismes exotiques.Type-A nosemosis, caused by Nosema apis, is a disease of the Honeybee classified as a notifiable disease
in France. Recent epidemioclinic data indicate a marked decrease in its incidence to the point that
this endemic disease could now be requalified as sporadic. At the same time, new analytical tech-
niques have shown that the causal agent has recently cohabited with a new species of Asian origin,
Nosema ceranae. These two species, with close morphological and biological characteristics, cohabit
the same ecological niche: the enterocytes of the ventricle of adult bees. The emerging Nosema cer-
anae, whose infection is rather asymptomatic, is now becoming predominant. Globalization of bee
trade, environmental changes, can be critical factors to the introduction of new pests. The progressive
disappearance of nosemosis in France is an example of the complexity of host-parasite relationships
as well as our inability to predict the emergence of exotic organisms
Impact of the Erika oil spill on sea birds: review of post-Erika studies
Le Drean-QuenecâHdu Sophie, L'Hostis Monique. Impact de la marĂ©e noire de lâErika sur les oiseaux marins : bilan des diffĂ©rentes Ă©tudes post-Erika. In: Bulletin de l'AcadĂ©mie VĂ©tĂ©rinaire de France tome 158 n°3, 2005. pp. 313-317
Babesia sp. EU1 from Roe Deer and Transmission within Ixodes ricinus
We report in vitro culture of zoonotic Babesia sp. EU1 from blood samples of roe deer in France. This study provides evidence of transovarial and transstadial transmission of the parasite within Ixodes ricinus, which suggests that this tick could be a vector and reservoir of EU1
A COMPARISON BETWEEN PLANT COMMUNITY COMPOSITION AND BOTANICAL SPECIESGATHERED BY HONEY BEES IN A CULTIVATED LANDSCAPE OF WESTERN FRANCE
International audienc