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Biofouled microplastics exposure is associated with shifts in late-summer lipid dynamics of juvenile copepod Calanus hyperboreus
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Biofouled microplastics exposure is associated with shifts in late-summer lipid dynamics of juvenile copepod Calanus hyperboreus
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Tiny Arctic ocean creatures called copepods build up fat reserves each summer that help them survive winter and serve as a critical food source for fish and whales — but this study found that when these copepods are exposed to microplastics coated with a natural biofilm (mimicking real ocean conditions), they store less fat and their fat composition changes during this crucial feeding season. Since these copepods are a foundational link in the Arctic food chain — feeding fish that eventually end up on our plates — disruptions to their fat storage could ripple upward through the food web, though more research is needed to confirm how directly this affects fish and human food supplies.
Lipid mass and free fatty-acid composition of Calanus hyperboreus (CV) exposed to pristine and biofouled microplastics during shipboard incubation experiments (southeastern Greenland, summer 2024)
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Researchers measured lipid mass and fatty-acid composition in Arctic copepods exposed to pristine and biofouled nylon-6 microplastics during shipboard experiments off southeastern Greenland. The dataset provides insights into how microplastic exposure under varying food availability and starvation conditions affects the fat reserves and nutritional physiology of a key Arctic zooplankton species.
Physiological Alterations and Immune Modulation in Fish Exposed to Microplastics
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Researchers reviewed the physiological and immunological effects of microplastic exposure in fish, finding that these particles smaller than 5 mm induce a range of biological disruptions including immune modulation, oxidative stress, and systemic health impacts with broader implications for aquatic ecosystem integrity.
The Impact of Microplastics on Marine Copepods
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Marine copepods, a foundational link in ocean food webs, ingest microplastics alongside natural prey, causing reduced feeding, reproductive impairment, and energy depletion that can cascade up through fish, seabirds, and marine mammals. Because copepods transfer energy from phytoplankton to higher trophic levels, their contamination with microplastics poses systemic risks to entire marine food chains.
Marine Microplastics: Abundance, Ecotoxic Consequences of Associated Anthropogenic Contaminants and Interactions with Microorganisms
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Researchers reviewed the rapid growth of microplastic pollution in the ocean, highlighting how these particles accumulate toxic chemicals and interact with microorganisms in ways that amplify their ecological harm. As plastic production continues to rise, the marine food web faces increasing exposure to contaminated microplastics that can ultimately reach humans through seafood.
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