Microplastics, microfibres and nanoplastics cause variable sub-lethal responses in mussels (Mytilus spp.)

Cole, MJ; Liddle, C; Consolandi, G; Drago, C; Hird, C; Lindeque, PK; Galloway, TS. 2020 Microplastics, microfibres and nanoplastics cause variable sub-lethal responses in mussels (Mytilus spp.). Marine Pollution Bulletin, 160. 111552. https://doi.org/10.1016/j.marpolbul.2020.111552

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Official URL: http://dx.doi.org/10.1016/j.marpolbul.2020.111552

Abstract/Summary

We compare the toxicity of microplastics, microfibres and nanoplastics on mussels. Mussels (Mytilus spp.) were exposed to 500 ng mL-1 of 20 µm polystyrene microplastics, 10x30 µm polyamide microfibres or 50 nm polystyrene nanoplastics for 24 h or 7 days. Biomarkers of immune response, oxidative stress response, lysosomal destabilisation and genotoxic damage were measured in haemolymph, digestive gland and gills. Microplastics and microfibres were observed in the digestive glands, with significantly higher plastic concentrations after 7-days exposure (ANOVA, P<0.05). Nanoplastics had a significant effect on hyalinocyte-granulocyte ratios (ANOVA, P<0.05), indicative of a heightened immune response. SOD activity was significantly increased followed 24 h exposure to plastics (two-way ANOVA, P<0.05), but returned to normal levels after 7-days exposure. No evidence of lysosomal destabilisation or genotoxic damage was observed from any form of plastic. The study highlights how particle size is a key factor in plastic particulate toxicity.

Item Type: Publication - Article
Additional Information. Not used in RCUK Gateway to Research.: Corresponding author: MC: Phone: +44(0)1752 633100; e-mail: mcol@pml.ac.uk
Additional Keywords: PlasticLitterDebrisPollutionShellfishBivalveFibresExposureEcotoxicology
Divisions: Plymouth Marine Laboratory > Science Areas > Marine Ecology and Biodiversity
Depositing User: S Hawkins
Date made live: 03 Sep 2020 10:20
Last Modified: 03 Sep 2020 10:20
URI: http://plymsea.ac.uk/id/eprint/9033

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