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The neonicotinoid thiamethoxam impairs male fertility in solitary bees, Osmia cornuta

ArticlesBy PeterNeumann 27. April 2021

Abstract The ongoing loss of global biodiversity is endangering ecosystem functioning and human food security. While environmental pollutants are well known to reduce fertility, the potential effects of common neonicotinoid insecticides on insect fertility remain poorly understood. Here, we show that field-realistic neonicotinoid exposure can drastically impact male insect fertility. In the laboratory, male and…

Direct Economic Impact Assessment of Winter Honeybee Colony Losses in Three European Countries

ArticlesBy RobertBrodschneider 27. April 2021

Abstract Honeybees are of great importance because of their role in pollination as well as for hive products. The population of managed colonies fluctuates over time, and recent monitoring reports show different levels of colony losses in many regions and countries. The cause of this kind of loss is a combination of various factors, such…

Review of seed yield components and pollination conditions in red clover (Trifolium pratense L.) seed production

ArticlesBy PerKryger 30. March 2021

Red clover (Trifolium pratense L.) is an important forage legume grown in many of the temperate regions around the world. In order to evaluate possible causes for the low seed yield in particular in tetraploid red clover, we surveyed 71 studies of red clover seed production published from 1948 to 2019, reviewing seed yield components,…

Metabolomics unveils the influence of dietary phytochemicals on residual pesticide concentrations in honey bees

ArticlesBy PerKryger 22. March 2021

The losses of honey bee colonies and declines of other insect pollinators have been associated with negative effects of pesticides. Honey bees as well as other pollinators are nectar and pollen foragers and thus are exposed to an extensive range of phytochemicals. Understanding the synergistic, additive, and antagonistic effects of plant secondary metabolites and pesticides…

Parasites and pesticides act antagonistically on honey bee health

ArticlesBy GeoffWilliams 18. March 2021

Abstract Pesticides and parasites have each been linked to increased mortality in western honey bees (Apis mellifera). Currently, it is uncertain if one makes the other worse; several studies have tested for potential synergistic stressor effects, but results have been mixed. Here, we use a hierarchical meta‐analysis of 63 experiments from 26 studies to gain…

Back to Ancient Remedy: Could Inhalation of Aerosolised-Honey and Propolis Tincture Protect Against the COVID-19 Pandemic?

ArticlesBy YahyaAlNaggar 2. March 2021

The second wave of the COVID-19 pandemic is exacerbating in most of the countries creating a state of international alert. After a year of COVID-19 emergence, while some COVID-19 vaccines are currently being produced and available, new concerns regarding their safety and efficacy are coming up particularly with the emergence of mutated strains of SARS-CoV-2…

Open Access Journals: Special Issue “Honeybee Breeding”

ArticlesBy MarinaMeixner 24. February 2021

Dear Colleagues, Traditionally, honeybee breeding has been focusing on traits of immediate benefit to apiculturists, such as maximizing honey yield or selecting for traits that allow handling colonies with greater ease, for instance, gentleness or low swarming tendency. In particular since the establishment of breeding value estimation, significant genetic progress has been achieved in this…

Mode of application of acaricides against the ectoparasitic mite (Varroa destructor) infesting honeybee colonies, determines their efficiencies and residues in honey and beeswax

ArticlesBy YahyaAlNaggar 23. February 2021

Ensuring adequate treatments for acaricide efficacy to combat mite infestation is a pre-requisite for healthy honeybees and a good yield of hive products. Therefore, this study aimed to assess the effect of the mode of application on efficiency of two acaricides; Vapcozin-20 (amitraz) and Mavrik 2F (fluvalinate) against Varroa mite infesting brood and adult honeybees. Methods: To do so,…

Authoritative subspecies diagnosis tool for European honey bees based on ancestry informative SNPs

ArticlesBy PerKryger 9. February 2021

With numerous endemic subspecies representing four of its five evolutionary lineages, Europe holds a large fraction of Apis mellifera genetic diversity. This diversity and the natural distribution range have been altered by anthropogenic factors. The conservation of this natural heritage relies on the availability of accurate tools for subspecies diagnosis. Based on pool-sequence data from…

LC–MS/MS Quantification Reveals Ample Gut Uptake and Metabolization of Dietary Phytochemicals in Honey Bees

ArticlesBy PerKryger 2. February 2021

Nanna Hjort Vidkjær, Inge S. Fomsgaard, and Per Kryger Abstract: The honey bee pollen/nectar diet is rich in bioactive phytochemicals and recent studies have demonstrated the potential of phytochemicals to influence honey bee disease resistance. To unravel the role of dietary phytochemicals in honey bee health it is essential to understand phytochemical uptake, bioavailability, and metabolism but presently…