Worldwide occurrences of honey bee colony losses have raised concerns about bee health and the sustainability of pollination-dependent crops. While multiple causal factors have been identified, seed coating with insecticides of the neonicotinoid family has been the focus of much discussion and research. Nonetheless, few studies have investigated the impacts of these insecticides under field con...

Natural honey is a source of vital amino acids, easily digestible carbohydrates, macro, microelements, biologically active substances that determine nutritional, antibacterial and antioxidant properties. In the conditions man-caused pollution Polissya Ukraine due to accident at Chernobyl nuclear power plant, systematic control quality safety beekeeping products important. To conduct such resear...

Gregorc A. , M. I . Smodi‰ ·kerl : Combating Varroa destructor in Honeybee Colonies Using Flumethrin or Fluvalinate. Acta Vet. Brno 2007, 76: 309-314. Mite mortality in two apiaries, one with 32 and the other with 15 honeybee (Apis mellifera carnica) colonies, was recorded prior to and after flumethrin or fluvalinate treatments and after a control, oxalic-acid application. During the 42and 51-d...

In Europe and North America honey bees cannot be kept without chemical treatments against Varroa destructor. Nevertheless, in Brazil an isolated population of Italian honey bees has been kept on an island since 1984 without treatment against this mite. The infestation rates in these colonies have decreased over the years. We looked for possible varroa-tolerance factors in six Italian honey bee ...

BACKGROUND Melissococcus plutonius is an entomopathogenic bacterium that causes European foulbrood (EFB), a honeybee (Apis mellifera L.) disease that necessitates quarantine in some countries. In Czechia, positive evidence of EFB was absent for almost 40 years, until an outbreak in the Krkonose Mountains National Park in 2015. This occurrence of EFB gave us the opportunity to study the epizooti...

Twelve months after the first successes of an ambitious project to commemorate Mendel in the abbey where he carried out his work, efforts are now turning to the gardens, perhaps some of the most intellectually fruitful patches of ground in the world. Restoration work in the abbey, in the beautiful Czech city of Brno, reveals a building in which little has changed since Mendel’s time where it is...

IN the 1950s no one thought of the honeybee as particularly adapted to answering genetic questions that were difficult in other organisms. But it has some distinct advantages. For one thing, unfertilized eggs develop into haploid males, whereas fertilized eggs become females, aproperty it shareswithotherhymenoptera.But in addition, a queen bee lays some 1000 eggs per day and the drone cells in ...

‘Diversity’ is now a magic word, showing up everywhere and often used to embrace many aspects of human activity, whether in government, the arts, sciences, research, choice of research subjects or so on. In many respects diversity represents an encompassing teamwork, and we all know the success of teams in sports in popular terms and the rewards of successful research teams. Thus, we can safely...