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Species-specific effect of microplastics on fish embryos and observation of toxicity kinetics in larvae
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Researchers compared microplastic ingestion across three commercial fish species with different feeding types (carnivores, omnivores, filter feeders), finding that carnivores ingested the least microplastic while omnivores were less able to eliminate them than filter feeders.
Microplastics will definitely increase the potential health risks to humans through food chain, especially by commercial fishes. Here, we studied species-specific effect of microplastics on fish embryos and observed uptake, accumulation and elimination of microplastics in larvae. We chose three commercial fish species with different feeding types as our research objects. The results we found demonstrated that microplastics abundance in larvae was related with feeding type. At the same exposure concentration, the ingestion of microplastics in carnivores was lower than that in filter feeders and omnivores. In addition, omnivores were less able to remove microplastics than filter feeders. To the best of our knowledge, this is the first study to compared the differences of microplastics ingested in fishes with feeding types under laboratory conditions, and we believe that the findings will be valid evidence to explain species-specific effect of microplastics on fishes.
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Researchers analyzed microplastic ingestion in commercially important fish species, evaluating how biological and environmental factors influence ingestion rates across 2,222 individual fish. The study assessed gastrointestinal tract contents to determine the extent and patterns of microplastic contamination. The findings suggest that both species-specific biology and environmental conditions play important roles in determining microplastic ingestion levels in commercial fish.
Species-specific effects of microplastics on juvenile fishes
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Researchers found that microplastic effects on juvenile fish are species-specific, with carnivorous largemouth bass showing more severe intestinal morphological damage and inflammatory responses compared to herbivorous grass carp and omnivorous Jian carp.
Assessing the bioaccumulation of microplastics in commercially important fish species
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Researchers assessed microplastic accumulation in commercially important fish species from coastal and offshore waters, finding significant differences between species based on feeding strategies and habitat depth. Filter feeders and omnivorous species accumulated more microplastics than others, reflecting diet-based differences across trophic levels. The study raises concerns about human dietary exposure to microplastics through widely consumed seafood products.
Plastic intake does not depend on fish eating habits: Identification of microplastics in the stomach contents of fish on an urban beach in Brazil
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Researchers analyzed microplastic content in the stomachs of seven fish species from an urban beach in Brazil and found that trophic guild (carnivore, omnivore, herbivore) did not predict microplastic ingestion rates, suggesting that incidental ingestion during feeding is widespread regardless of diet type.
Occurrence of Microplastics in Digestive Tracts of Fish with Different Modes of Ingestion in Japanese Bays and Lake Biwa
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Researchers examined microplastics in the digestive tracts of seven fish species from five Japanese bays and Lake Biwa, finding particles in 37% of the 197 fish sampled. Filter-feeding fish had significantly higher microplastic ingestion rates than non-filter-feeders, suggesting that feeding mode is a key factor in microplastic exposure.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.