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Monthly Archives: January 2023
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Chronic Exposure to Polystyrene Microplastic Fragments Has No Effect on Honey Bee Survival, but Reduces Feeding Rate and Body Weight
Microplastics (MPs), in the form of fragments and fibers, were recently found in honey samples collected in Ecuador as well as in honey bees collected from Denmark and China. However, little is known about how MPs impact bee health. To fill this knowledge gap, we investigated the potential toxicity of irregularly shaped polystyrene (PS)-MP fragments…
Bee Informed Partnership’s Colony Loss Survey – 2017-18, 2018-19, 2020-21
Results of the Bee Informed Partnership’s annual loss and management survey have been published in the Journal of Apicultural Research for the years 2017-18, 2018-19, 2020-21. The open access article is available at: https://doi.org/10.1080/00218839.2022.2158586
Revealing some Elements and Heavy Metals in Honeybee and Beeswax Samples Collected from Different Environments
Honeybees and their products are good bioindicators because they are inextricably linked to the natural environment they inhabit. The objectives of this research were to detect and identify pollution extent by the levels of metals in honeybees (foragers) (Apis mellifera jemenatica) and beeswax, including some elements such as K, Ca, Na, Mg, Fe, Mn, Cu,…
Chronic in‑hive exposure to a field‑relevant concentration of Closer™ SC (24% sulfoxaflor) insecticide altered immunological and physiological markers of honey bee foragers (Apis mellifera)
Sulfoxaflor (SULF), a well-known alternative for the banned neonicotinoids, is not environmentally persistent, yet numerous studies using field-realistic levels have demonstrated its detrimental impact on honey bee colonies. Despite this, even just a limited number of studies have addressed its residue-level effects on the physiological and immunological biomarkers of foraging honey bees in semi-field conditions.…
Sublethal effects of herbicides clethodim, haloxyfop-P-methyl, and their mixture on honey bee health
Herbicides are the most frequently used pesticides, accounting for more than 60% of all pesticides used in agriculture around the world. Clethodim (CTD) (Vixtol Super® 24% EC), haloxyfop-p-methyl (HFM) (Gallant Super® 10.8% EC), and their mixture (CTD (15%) + HFM (7.5%) (Fine® 22.5% EC) are among the most commonly used post-emergence graminicides in Egypt and worldwide. However,…