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Food quality and microplastics alter feeding behavior and digestive enzyme activities in marine isopods
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Effects of low food quality and microplastics on feeding behavior and physiology of the marine isopods Idotea emarginata.
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This study examined how the presence of microplastics affects the feeding behavior and health of aquatic invertebrates when food quality is low, finding that microplastic ingestion compounds the negative effects of poor nutrition. The results suggest that real-world conditions — where both food scarcity and plastic pollution co-occur — may be especially harmful to aquatic life.
Effects of microplastics on digestive enzymes in the marine isopod Idotea emarginata
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Researchers studied how microplastics affect digestive enzymes in a marine isopod, finding that while feeding rates did not change significantly with microplastic addition, enzyme activities showed variable responses. The results suggest that microplastics may subtly alter digestive processes in marine invertebrates even without obvious effects on feeding behavior.
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.
Impact of Microplastics on the Physiology of Benthos
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Researchers reviewed how microplastic pollution harms bottom-dwelling aquatic organisms, summarizing evidence that benthic species face widespread physiological disruption from microplastic ingestion and accumulation, with broader implications for aquatic biodiversity.
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