Beyer, Marco Lenouvel, Audrey Guignard, Cédric Eickermann, Michael Clermont, Antoine Kraus, François Hoffmann, Lucien
Published in
Environmental Science and Pollution Research
Pesticide residues (112 compounds) were quantified by GC-MS/MS or LC-MS/MS in 85 bee bread samples and 154 pollen samples obtained from five apiaries each with three or four colonies (genotype Buckfast) in Luxembourg over the period 2011–2013. Thiacloprid, chlorfenvinphos, tebuconazole, and methiocarb were found most frequently in bee bread while t...
Freiberg, M. De Jong, D. Message, D. Cox-Foster, D.
FAPESP
Freiberg, M. De Jong, D. Message, D. Cox-Foster, D.
FAPESP
Locke, Barbara Conte, Yves Le Crauser, Didier Fries, Ingemar
Published in
Ecology and evolution
Honey bee societies (Apis mellifera), the ectoparasitic mite Varroa destructor, and honey bee viruses that are vectored by the mite, form a complex system of host-parasite interactions. Coevolution by natural selection in this system has been hindered for European honey bee hosts since apicultural practices remove the mite and consequently the sele...
Muenz, Thomas S. Maisonnasse, Alban Plettner, Erika Le Conte, Yves Rössler, Wolfgang
Published in
Naturwissenschaften
Social work force distribution in honeybee colonies critically depends on subtle adjustments of an age-related polyethism. Pheromones play a crucial role in adjusting physiological and behavioral maturation of nurse bees to foragers. In addition to primer effects of brood pheromone and queen mandibular pheromone—both were shown to influence onset o...
Ferreira-Caliman, M. J. Turatti, I. C. C. Lopes, N. P. Zucchi, R. Nascimento, F. S.
FAPESP [Proc. 04/09479-8, 10/10027-5]
Castillo, Carlos Chen, Hao Graves, Carolyn Maisonnasse, Alban Le Conte, Yves Plettner, Erika
Honey bees undergo a physiological transition from nursing to foraging approximately 21 days after adult emergence. This transition is delayed by ethyl oleate (EO), a primer pheromone produced by foragers when exposed to ethanol from fermented nectar. We demonstrate here that two secreted α/β-hydrolases (BeeBase ID: GB11403 and GB13365) are respons...
Qiang Huang, - Kryger, Per Le Conte, Yves Moritz, Robin F.A.
Honey bee colonies (Apis mellifera) have been selected for low level of Nosema in Denmark over decades and Nosema is now rarely found in bee colonies from these breeding lines. We compared the immune response of a selected and an unselected honey bee lineage, taking advantage of the haploid males to study its potential impact on the tolerance towar...
Alaux, Cédric Kemper, Nele Kretzschmar, Andre Le Conte, Yves
Social removal is often an adaptive response for preventing the entry and spread of parasitic infection between kin members of a group. Social isolation via removal or the switching of social tasks has also been observed in insect societies; however, the underlying mechanisms are unclear. We tested in honeybees the role of the immune system in phys...
Vanengelsdorp, Dennis Brodschneider, Robert Brosteaux, Yves Van der Zee, Romée Pisa, Lennard Underwood, Robyn Lengerich, Eugene J. Sleen, Angela Neumann, Peter Wilkins, Selwyn
...
Quantifying colony losses is a two-part process. First, colony loss data needs to be collected by surveying beekeepers and then it needs to be calculated and reported in a standardized way. We propose using two different ways to calculate and communicate colony losses. The first we term the total colony losses, sometimes referred to as cumulative l...