We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Occurrence of Microplastics in Digestive Tracts of Fish with Different Modes of Ingestion in Japanese Bays and Lake Biwa
AI summary Read the abstract
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.
近年, マイクロプラスチック汚染が世界中で注目を集め, 生態系への悪影響が懸念されている。マイクロプラスチックとは粒径5 mm以下のプラスチック粒子である。本研究では日本内湾5ヶ所および琵琶湖における魚7種を対象とし, その消化管中の粒径100 μm以上のマイクロプラスチックの存在実態の把握を目的とした。魚197匹中74匹から140個のマイクロプラスチックが検出され, すべての地点でその存在が確認された。魚1匹あたりから検出されたマイクロプラスチック数は平均1.89個であり, その大半がポリプロピレン (40.7%) とポリエチレン (35.0%) であった。平均粒径の中央値は543 μmであった。摂食方法別にろ過摂食魚類とろ過摂食以外の魚類に分類すると, 前者97匹中54.6%, 後者100匹中21.0%からマイクロプラスチックが検出された。摂食方法によるマイクロプラスチックの誤飲量への影響が示唆された。
More Papers Like This
Effect of biological and environmental factors on microplastic ingestion of commercial fish species
AI summary Read the abstract
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.
Plastic intake does not depend on fish eating habits: Identification of microplastics in the stomach contents of fish on an urban beach in Brazil
AI summary Read the abstract
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.
Variability in the drivers of microplastic consumption by fish across four lake ecosystems
AI summary Read the abstract
Researchers examined microplastic consumption by three fish species across four lakes in Minnesota and found that ingestion rates varied by species and feeding strategy. Filter-feeding fish consumed microplastics at rates that matched local water contamination levels, while visual feeders did not show the same pattern. The findings indicate that a fish's feeding behavior plays a major role in determining its microplastic exposure.
Microplastic pollution of commercial fishes from coastal and offshore waters in southwestern Japan
AI summary Read the abstract
Microplastics were found in the digestive tracts of seven fish species from coastal and offshore waters near Kyushu, Japan, with contamination rates and particle characteristics differing between pelagic and demersal species and between coastal and deeper water habitats.
Is the feeding type related with the content of microplastics in intertidal fish gut?
AI summary Read the abstract
Researchers compared microplastic ingestion across intertidal fish with different feeding strategies and found that feeding type influenced the amount of plastic found in stomachs. The study suggests that filter feeders and detritivores may ingest more microplastics than active predators, linking ecological role to plastic exposure risk.
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.