We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Nanoplastics toxicity in aquatic organisms: a review of effects on selected marine and freshwater species
Summary
This review synthesizes findings from 128 studies on the effects of nanoplastics on five representative freshwater and marine species, from microalgae to fish. Researchers found that even at low concentrations, nanoplastic exposure can cause oxidative stress, membrane damage, developmental disorders, and reproductive impairment across species. The study highlights significant knowledge gaps around chronic, environmentally realistic exposure levels and calls for standardized testing methods.
Nanoplastics (NPs), particles smaller than 1 μm, are considered a significant threat to aquatic ecosystems due to their ability to penetrate tissues, bioaccumulate, and disrupt physiological functions. However, quantitative data on their chronic and environmentally relevant effects remain limited. This review combines findings from 128 studies (2014–2025) on the effects of nanoparticles in five representative freshwater and marine species: Scenedesmus obliquus (microalgae), Crassostrea gigas (bivalve), Apostichopus japonicus (echinoderm), Litopenaeus vannamei (crustacean), and Danio rerio (fish). Our analysis shows that exposure to NPs at low concentrations of 0.1–100 μg/mL can cause oxidative stress, membrane damage, developmental disorders, reproductive changes, and immune and nervous system dysfunction. Factors affecting the toxicity of NPs include particle size, concentration, type, and aging status, as well as duration of exposure, organism sensitivity, environmental conditions, and the presence of co-contaminants. Despite the increasing recognition of the effects of nanoplastics, quantitative data on their chronic and long-term effects, particularly at environmentally relevant exposure levels, remain scarce. This review highlights the urgent need for future research focusing on the mechanisms and processes of nanoparticle toxicity at ecologically realistic concentrations, as well as on the long-term ecological and physiological consequences for aquatic organisms.