Microplastics in marine mammals stranded around the British coast: ubiquitous but transitory?

Nelms, S.E., Barnett, J., Brownlow, A. , Davison, N.J. , Deaville, R., Galloway, T.S., Lindeque, P.K., Santillo, D. and Godley, B.J. (2019) Microplastics in marine mammals stranded around the British coast: ubiquitous but transitory? Scientific Reports, 9, 1075. (doi: 10.1038/s41598-018-37428-3) (PMID:30705316) (PMCID:PMC6355900)

[img] Text
270816.pdf - Published Version
Available under License Creative Commons Attribution.



Plastic pollution represents a pervasive and increasing threat to marine ecosystems worldwide and there is a need to better understand the extent to which microplastics (<5 mm) are ingested by high trophic-level taxa, such as marine mammals. Here, we perform a comprehensive assessment by examining whole digestive tracts of 50 individuals from 10 species whilst operating strict contamination controls. Microplastics were ubiquitous with particles detected in every animal examined. The relatively low number per animal (mean = 5.5) suggests these particles are transitory. Stomachs, however, were found to contain a greater number than intestines, indicating a potential site of temporary retention. The majority of particles were fibres (84%) while the remaining 16% was fragments. Particles were mainly blue and black (42.5% and 26.4%) in colour and Nylon was the most prevalent (60%) polymer type. A possible relationship was found between the cause of death category and microplastic abundance, indicating that animals that died due to infectious diseases had a slightly higher number of particles than those that died of trauma and other drivers of mortality. It is not possible, however, to draw any firm conclusions on the potential biological significance of this observation and further research is required to better understand the potential chronic effects of microplastic exposure on animal health, particularly as marine mammals are widely considered important sentinels for the implications of pollution for the marine environment.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Davison, Mr Nick and Brownlow, Dr Andrew
Authors: Nelms, S.E., Barnett, J., Brownlow, A., Davison, N.J., Deaville, R., Galloway, T.S., Lindeque, P.K., Santillo, D., and Godley, B.J.
College/School:College of Medical Veterinary and Life Sciences > School of Biodiversity, One Health & Veterinary Medicine
Journal Name:Scientific Reports
Publisher:Nature Research
ISSN (Online):2045-2322
Copyright Holders:Copyright © 2019 The Authors
First Published:First published in Scientific Reports 9: 1075
Publisher Policy:Reproduced under a Creative Commons License

University Staff: Request a correction | Enlighten Editors: Update this record