Evaluation of uptake and chronic toxicity of virgin polystyrene microbeads in freshwater zebra mussel Dreissena polymorpha (Mollusca: Bivalvia)
| Autor: | C. André, J. Auclair, Camilla Carla Parenti, Stefano Magni, François Gagné, Andrea Binelli, Houda Hanana, Francesco Bonasoro, Camilla Della Torre |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Microplastics
animal structures Environmental Engineering 010504 meteorology & atmospheric sciences 010501 environmental sciences 01 natural sciences Dreissena Animals Environmental Chemistry Waste Management and Disposal Mollusca Chronic toxicity 0105 earth and related environmental sciences biology Chemistry fungi Mussel biology.organism_classification Bivalvia Pollution Environmental chemistry Toxicity Zebra mussel Polystyrenes Biomarkers Water Pollutants Chemical Environmental Monitoring |
| Zdroj: | Science of The Total Environment. :778-788 |
| ISSN: | 0048-9697 |
| DOI: | 10.1016/j.scitotenv.2018.03.075 |
| Popis: | Microplastics (MPs), plastic debris smaller than 5mm, are widely found in both marine and freshwater ecosystems. However, few studies regarding their hazardous effects on inland water organisms, have been conducted. For this reason, the aim of our research was the evaluation of uptake and chronic toxicity of two mixtures (MIXs) of virgin polystyrene microbeads (PMs) of 10μm and 1μm in size (MIX 1, with 5×105 of 1μmsizePMs/L and 5×105 of 10μmsizePMs/L, and MIX 2 with 2×106 of 1μmsizePMs/L and 2×106 of 10μmsizePMs/L) on freshwater zebra mussel Dreissena polymorpha (Mollusca: Bivalvia) during 6 exposure days. The PM uptake in the mussel body and hemolymph was assessed using confocal microscopy, while the chronic toxicity of PMs was evaluated on exposed mussels using a comprehensive battery of biomarkers of cellular stress, oxidative damage and neuro- genotoxicity. Confocal microscopy analyses showed that MPs concentrated in the gut lumen of exposed mussels, absorbed and transferred firstly in the tissues and then in the hemolymph. The results revealed that PMs do not produce oxidative stress and genetic damage, with the exception of a significant modulation of catalase and glutathione peroxidase activities in mussels exposed to MIX 1. Regarding neurotoxicity, we observed only a significant increase of dopamine concentration in mussels exposed to both MIXs, suggesting a possible implication of this neurotransmitter in an elimination process of accumulated PMs. This research represents a first study about the evaluation of virgin MP toxicity in zebra mussel and more research is warranted concerning the long term neurological effects of virgin MPs. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect