Abstract In order to produce such ‘custom design’ colonies, it will however be necessary to reliably reproduce suitable sperm mixes to inseminate the queens. Using individual drones to inseminate a queen will be insufficient. Another queen will be inseminated with a set of semen from different drones. Hence, no single colony will have identical fathers…
Abstract Honeybees are prone to parasite and pathogen infestations/infections due to their social colony life. Bacterial pathogens in particular lead to destructive infections of the brood. European foulbrood is caused by the bacterium Melissococcus plutonius in combination with several other Gram-positive bacteria (Achromobacter eurydice, Bacillus pumilus, Brevibacillus laterosporus, Enterococcus faecalis, Paenibacillus alvei, Paenibacillus dendritiformis) involved as secondary invaders following the initial infection.…
Abstract There are various chemicals available for the control of Varroa mites from honey bee colonies including amitraz and tau-fluvalinate. The optimum dose of these chemicals should give the highest Varroa control efficacy with minimal negative impacts on honey bees. The high doses are expected to have destructive impacts on honey bees. However, the impacts…
Abstract Western honey bees, Apis mellifera, live in highly eusocial colonies that are each typically headed by a single queen. The queen is the sole reproductive female in a healthy colony, and because long-term colony survival depends on her ability to produce a large number of offspring, queen health is essential for colony success. Honey bees…
Abstract Under normal conditions, each honey bee colony contains one queen. Queenless colonies are mostly supplied with new queens using commercial caged queens. In some countries, caged virgin queens are commonly sold for such purpose. Keeping virgin queens for a long period is essential for marketing and shipping purposes. In this study, a new cage…
Abstract In spring there is often a rise in honey bee mortality incidents. The aim of this study was to investigate the potential correlation, in the reported incidents, between exposure to pesticide treatments and virus infections. Here we summarize the situation in northeastern Italy during spring 2014, evaluated by monitoring 150 active ingredients and three honey bee…
Abstract Beekeepers usually supply their colonies with alternatives to nectar (i.e. sugar feeding) during dearth periods of the year, especially cold times of winter. The objective of the study was to determine the best substances to feed bees to enhance the tolerance and survival of honey bees (Apis mellifera L.) to low temperatures. Seven feeding…
Abstract Varroa mite, Varroa destructor, is the most destructive factor to western honey bee colonies worldwide. In 1904, Varroa was firstly recorded on honey bees, at the beginning it was hypothesized that Varroa is one species but recently this hypothesis has been considered to be incorrect. In 1983, Varroa mite was recorded in Egypt for…
Abstract The study was conducted t oinvestigate the effect of Lactobacillus rhamnosus (a commercial probiotic) and inulin (a prebiotic) on the survival rates of honeybees infected and uninfected with Nosema ceranae, the level of phenoloxidase (PO) activity, the course of nosemosis, and the effect on the prevention of nosemosis development in bees. The cells of…
Abstract Background Nosema ceranae infection not only damages honey bee (Apis melifera) intestines, but we believe it may also affect intestinal yeast development and its seasonal pattern. In order to check our hypothesis, infection intensity versus intestinal yeast colony forming units (CFU) both in field and cage experiments were studied. Methods/Findings Field tests were carried…