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Trophic_Transfer_of_Microplastics_in_Social_Hymenoptera
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Scientists fed tiny plastic particles (microplastics) to worker ants and bumblebees to see if they would pass these pollutants to their babies during feeding. They found that bumblebees transferred microplastics to their larvae, but ants didn't because they have a special filtering system that blocks particles. This matters because it shows how plastic pollution can move up the food chain differently in various insects, which could affect the health of ecosystems that humans depend on for food production.
Relevance, background, gap of knowledge, reduced methods, findigs and interpretation: Anthropogenic pollutants are one facet of global change contributing to insect decline in terrestrial ecosystems. Microplastic (MP), a major particulate pollutant, is already ubiquitously present in terrestrial ecosystems and expected to further accumulate. However, studies on effects of MP on the ecologically important social insects are still scarce. In social insects, negative effects of MP pollution could not only manifest on the individual but also on the colony level due to cooperative brood care. We tested whether MP particles taken up by workers of the Japanese carpenter ant (Camponotus japonicus) and the buff-tailed bumblebee (Bombus terrestris) are transferred to larval stages during brood care. We exposed ant and bumblebee workers to MP-contaminated food and subsequently analysed the digestive systems of workers, larvae, and pupae for the presence of MP particles. Both, ant and bumblebee workers, had ingested MP particles with food. However, while we found numerous MP particles in the digestive system of bumblebee larvae, we found no MP particles in the digestive system of ant larvae. This is likely due to the infrabuccal pocket (IBP), a filtering device for particulate matter only present in the ants, that effectively prevents the transfer of particulate pollutants such as MP within colonies during cooperative brood care. In contrast, in bumblebees the unobstructed transfer of MP from workers to larvae may entail negative effects on larvae or carry-over effects during development. Thus, negative colony-level effects of pollutants on social Hymenoptera may be exacerbated in those species that lack an IBP. The data shows the detection of MP on the body surface or in the body (e.g. digestive system) of the different developmental stages (larva, pupa, worker) of ants (Camponotus japonicus) or bumblebees (Bombus terrestris). The data shows a clear assignment of specimens to the treatment groups [fed with MP, fed with control solutions] and explains their origin (source colonies/microcolonies). Data Gathering: The data was gathered after experimental exposition of the organisms to the respective treatments via dissection or tissue clearing. The MP particles were fluorescence labelled and, therefore, were detected with fluorescence microscopy. Data and code use: The data can be used like any other presece/absence data. All important information on the data per coloumn are given in the headers. All steps of analysis are expained in the R-script.
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Trophic_Transfer_of_Microplastics_in_Social_Hymenoptera
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Scientists found that tiny plastic bits (microplastics) get passed from adult bumblebees to their babies through shared feeding, but ants have a natural filter in their mouths that blocks this transfer. This matters because it shows some pollinators, like bees, may be more vulnerable to plastic pollution's health effects across generations—and since bees pollinate much of our food supply, their decline from environmental pollutants like microplastics could indirectly affect human food systems too.
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Scientists fed microplastic particles to ants and bumblebees to see how these tiny plastic bits move through colonies that share food and care for their young together. Ants had a built-in filter (a special mouth pocket) that trapped the plastic before it reached their larvae, but bumblebees had no such defense—meaning the plastic passed freely from adult bees to developing young. This matters because it shows some pollinator species may be far more vulnerable to microplastic pollution than others, which could affect bee populations that are crucial for pollinating the crops humans eat.
Trophic_Transfer_of_Microplastic_in_Social_Hymenoptera
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Microplastics can travel up through the food chain in social insects, but this study found a striking difference between ant and bumblebee colonies in how that transfer happens. When workers of both species ingested microplastic-contaminated food, bumblebee larvae received the plastic particles from their caregivers — but ant larvae did not, because worker ants have a specialized filtering organ (the infrabuccal pocket) that traps particles before they can be passed on. This finding suggests that social insect species lacking this biological filter are more vulnerable to colony-level effects of microplastic pollution.
The fate of orally ingested microplastics during cooperative brood care in two social Hymenoptera species
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Researchers exposed carpenter ant and bumblebee colonies to polystyrene microplastics and tracked particle fate during cooperative brood care, finding that ants' infrabuccal pocket effectively filtered particles and prevented larval exposure, while bumblebee larvae ingested microplastics transferred directly from workers, suggesting colony-level MP risks differ markedly by species anatomy.
To pass on or not to pass on: The fate of orally ingested microplastic during cooperative brood care in two social Hymenoptera species
AI summary Read the abstract
Researchers tested whether microplastic particles ingested by workers of the Japanese carpenter ant (Camponotus japonicus) and the buff-tailed bumblebee (Bombus terrestris) are transferred to larvae during cooperative brood care, finding evidence that ingested microplastics can be passed from workers to brood. The study highlights a colony-level exposure pathway in ecologically important social insects that has been largely overlooked in microplastic research.
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