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Are Honey Bees at Risk from Microplastics?
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This review examines whether microplastics pose a risk to honey bee populations, noting that microplastics have been detected in honey samples and on bees collected from both urban and rural areas. Researchers found that exposure to certain polymer types may affect bee health, and the study calls for more research to understand the risks of microplastic exposure to pollinators and the broader implications for ecosystem health.
Microplastics (MPs) are ubiquitous and persistent pollutants, and have been detected in a wide variety of media, from soils to aquatic systems. MPs, consisting primarily of polyethylene, polypropylene, and polyacrylamide polymers, have recently been found in 12% of samples of honey collected in Ecuador. Recently, MPs have also been identified in honey bees collected from apiaries in Copenhagen, Denmark, as well as nearby semiurban and rural areas. Given these documented exposures, assessment of their effects is critical for understanding the risks of MP exposure to honey bees. Exposure to polystyrene (PS)-MPs decreased diversity of the honey bee gut microbiota, followed by changes in gene expression related to oxidative damage, detoxification, and immunity. As a result, the aim of this perspective was to investigate whether wide-spread prevalence of MPs might have unintended negative effects on health and fitness of honey bees, as well as to draw the scientific community's attention to the possible risks of MPs to the fitness of honey bees. Several research questions must be answered before MPs can be considered a potential threat to bees.
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Microplastics comprehensive review: Impact on honey bee, occurrence in honey and health risk evaluation
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This systematic review examines how microplastics contaminate honey through bees and their environment. The findings show that bees accumulate microplastics from polluted air, water, and soil, which can then end up in honey — a product many people consume for its health benefits.
The Presence of Microplastics in Honey
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This review summarizes existing research on microplastics found in honey. It reports that bees can carry microplastics from air, soil, water, pollen, and nectar into hives, and that beekeeping equipment and packaging can also add contamination.
Microplastics incorporated by honeybees from food are transferred to honey, wax and larvae
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Researchers found that when honeybees consume food contaminated with microplastics, the particles are transferred to honey, beeswax, and developing larvae inside the hive. Chronic exposure did not significantly affect colony growth, but the presence of microplastics in honey means humans may be ingesting them through this food source. This study reveals another pathway by which microplastics can enter the human diet through contaminated bee products.
Exploring the risk of microplastics to pollinators: focusing on honey bees
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This review summarizes research on how microplastics affect honey bees, which pollinate about 70% of the food we eat. Microplastics have been found in honey, pollen, beeswax, and bee tissues including the brain and gut, where they can impair behavior, immunity, and gut bacteria. Declining bee populations threaten food production, and microplastic pollution may be one contributing factor.
Honeybees as sentinels of microplastic pollution: a meta-analysis of accumulation, toxicity, and biomonitoring potential
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This review pulled together findings from 139 studies showing that honeybees pick up microplastics (tiny plastic bits) from the environment, and these particles can end up in honey, pollen, and wax, products many people eat or use daily. Because bees fly over large areas and are sensitive to pollution, scientists suggest using them as living "pollution detectors" to track microplastic contamination in the environment, which could also signal risks to the food we eat and the crops bees pollinate. More research is still needed to understand exactly how harmful long-term microplastic exposure is to bees and, by extension, to us.
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