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Consequences of a short time exposure to a sublethal dose of Flupyradifurone (Sivanto) pesticide early in life on survival and immunity in the honeybee (Apis mellifera)

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Dramatic losses of pollinating insects have become of global concern, as they threaten not only key ecosystem services but also human food production. Recent research provided evidence that interactions between ecological stressors are drivers of declining pollinator health and responsible for observed population collapses. We used the honeybee Apis mellifera and conducted a series of…

Detection and quantification of Melissococcus plutonius in honey bee workers exposed to European foulbrood in Czechia through conventional PCR, qPCR, and barcode sequencing

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Melissococcus plutonius is the causative agent of European foulbrood (EFB), an important bacterial disease of honey bee larvae, and various methods have been developed for the detection of this disease. Adult bees are not affected but spread M. plutonius among beehives and serve as a diagnostic tool to detect EFB. Melissococcus plutonius detection based on…

A citizen science supported study on seasonal diversity and monoflorality of pollen collected by honey bees in Austria

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Robert Brodschneider Kristina Gratzer, Elfriede Kalcher-Sommersguter, Helmut Heigl, Waltraud Auer, Rudolf Moosbeckhofer & Karl Crailsheim Scientific Reports volume 9, Article number: 16633 (2019) https://www.nature.com/articles/s41598-019-53016-5 Austrian beekeepers participated in the “C.S.I. Pollen” study as citizen scientists and collected pollen from honey bee colonies in hive mounted traps every three weeks from April to September in 2014 and 2015 to…

Exposure of honey bee larvae to thiamethoxam and its interaction with Nosema ceranae infection in adult honey bees

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Tesovnik Tanja, Zorc Minja, Ristanić Marko, Glavinić Uroš, Stevanović Jevrosima, Narat Mojca, Stanimirović Zoran (2019) Exposure of honey bee larvae to thiamethoxam and its interaction with Nosema ceranae infection in adult honey bees, Environmental Pollution, DOI: 10.1016/j.envpol.2019.113443 Abstract During their lifetime honey bees (Apis mellifera) rarely experience optimal conditions. Sometimes, a simultaneous action of multiple…

The effect of diet types on some quality characteristics of artificially reared Apis mellifera queens

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Slobodan Dolasevic, Jevrosima Stevanovic, Nevenka Aleksic, Uros Glavinic, Nebojsa Deletic, Mica Mladenovic & Zoran Stanimirovic The influence of various diets on the quality of Apis mellifera queens was assessed. Colonies intended for queen cell production were assigned to four groups fed on (1) sugar-only, (2) mix of sugar, honey and fresh pollen, (3) sugar and pollen substitute…

The Effect of Diet on the Composition and Stability of Proteins Secreted by Honey Bees in Honey

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Honey proteins are essential bee nutrients and antimicrobials that protect honey from microbial spoilage. The majority of the honey proteome includes bee-secreted peptides and proteins, produced in specialised glands; however, bees need to forage actively for nitrogen sources and other basic elements of protein synthesis. Nectar and pollen of dierent origins can vary significantly in…

The rise and fall of major royal jelly proteins during a honeybee (Apis mellifera) workers’ life

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The genome of the western honeybee (Apis mellifera) harbors nine transcribed major royal jelly protein genes (mrjp1‐9) which originate from a single‐copy precursor via gene duplication. The first MRJP was identified in royal jelly, a secretion of the bees’ hypopharyngeal glands that is used by young worker bees, called nurses, to feed developing larvae. Thus,…

A computer vision system to monitor the infestation level of Varroa destructor in a honeybee colony

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Kim Bjerge, Carsten Eie Frigaard, Peter Høgh Mikkelsen, Thomas Holm Nielsen, Michael Misbih, Per Kryger Highlights: Computer vision system to monitor the infestation level of varroa mites in abeehive. A nondestructive method as alternative to traditional methods. The vision system is based on deep learning to determine the number of infested bees. Measures an infestation level…

Coexistence of genetically different Varroa destructor in Apis mellifera colonies

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Gajić B, Muñoz I, De la Rúa P, Stevanović J, Lakić N, Kulišić Z, Stanimirović Z. Abstract The aim of this study was to investigate the genetic diversity of Varroa destructor parasitizing Apis mellifera colonies and to test for possible host-parasite association at the mitochondrial DNA (mtDNA) level. Six A. mellifera haplotypes (including a novel C2aa) and five haplotypes of V.…