apis mellifera

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Impact of a microbial pest control product containing Bacillus thuringiensis

To avoid potential adverse side effects of chemical plant protection products, microbial pest control products (MPCP) are commonly applied as biological alternatives. This study aimed to evaluate the biosafety of a MPCP with the active organism Bacillus thuringiensis ssp. aizawai (strain: ABTS-1857). An in-hive feeding experiment was performed under field-realistic conditions to examine the effect…

Honey bee colony loss rates in 37 countries using the COLOSS survey for winter 2019–2020

Abstract This article presents managed honey bee colony loss rates over winter 2019/20 resulting from using the standardised COLOSS questionnaire in 37 countries. Six countries were from outside Europe, including, for the first time in this series of articles, New Zealand. The 30,491 beekeepers outside New Zealand reported 4.5% of colonies with unsolvable queen problems,…

Temporal increase of Varroa mites in trap frames used for drone brood removal during the honey bee season

Abstract Varroa mites are highly attracted to drone brood of honey bees (Apis mellifera), as it increases their chance of successful reproduction. Therefore, drone brood removal with trap frames is common practice among beekeepers in Europe and part of sustainable varroa control. However, it is considered labour-intensive, and there are doubts about the effectiveness of…

PhD position (m/f/d) in Animal Ecology, Germany

Foraging ecology of Asian honey bees Background: The ecology of the Western honey bee (Apis mellifera) has been studied in some detail, but next to nothing is known about the foraging ecology and mechanisms of coexistence of Asian honey bee species (A. cerana, A. dorsata, A. florea). Further, it is unknown how the large-scale transformation…

Impact of microorganisms and entomopathogenic nematodes used for plant protection on solitary and social bee pollinators

Abstract Pollinating bees are stressed by highly variable environmental conditions, malnutrition, parasites and pathogens, but may also by getting in contact with microorganisms or entomopathogenic nematodes that are used to control plant pests and diseases. While foraging for water, food, or nest material social as well as solitary bees have direct contact or even consume…

First international meeting APIS SILVATICA- The western honey bee in nature. Pantelleria May 16-20, 2022

Parco Nazionale Isola di Pantelleria in cooperation with Parco Nazionale delle Cinque Terre, Parco Nazionale della Maiella, Parco Nazionale del Vesuvio and Parco Nazionale dell’Arcipelago Toscano are organising the First international meeting APIS SILVATICA- The western honey bee in nature. All scientists and activists studying free-living colonies of Apis mellifera, their relationship to other pollinators,…

Changes in chemical cues of Melissococcus plutonius infected honey bee larvae

Abstract European foulbrood (EFB), caused by Melissococcus plutonius, is a globally distributed bacterial brood disease affecting Apis mellifera larvae. There is some evidence, even if under debate, that spreading of the disease within the colony is prevented by worker bees performing hygienic behaviour, including detection and removal of infected larvae. Olfactory cues (brood pheromones, signature…

Development of a loop-mediated isothermal amplification (LAMP) and a direct LAMP for the specific detection of Nosema ceranae, a parasite of honey bees

Abstract Nosema ceranae is a ubiquitous microsporidian pathogen infecting the midgut of honey bees. The infection causes bee nosemosis, a disease associated with malnutrition, dysentery, and lethargic behavior, and results in considerable economic losses in apiculture. The use of a rapid, sensitive, and inexpensive DNA-based molecular detection method assists in the surveillance and eventual control…

Perspectives on long-term bee vitality monitoring

Abstract Bees are essential pollinators and their protection is relevant to secure biodiversity and agricultural production. MonViA-project members and partners collaborate in monitoring projects to develop effective policies to support biodiversity in Germany. In the current case-study, the impact of climate on honey bee population performance was assessed. We modeled year-to-year Central-European honey yield changes…