Evidence map›Paper›PMID 30705316›Full record

ArticleScientific reports2019

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

S E Nelms, J Barnett, A Brownlow, N J Davison, R Deaville, T S Galloway, P K Lindeque, D Santillo, B J Godley

Abstract read
In one paragraph

Article in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

48 citing papers in PubMed.

  1. A global ranking of the relative vulnerability of marine mammals to macroplastic pollution.Conservation biology : the journal of the Society for Conservation Biology · 2026
    Article
  2. Article
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  4. Review
  5. Towards more sustainable oceans: A review of the pressing challenges posed by marine plastic litter.Waste management & research : the journal of the International Solid Wastes and Public Cleansing Association, ISWA · 2025
    Review
  6. Review
  7. Article
  8. Article
  9. Article
  10. Review
  11. Review
  12. Review
  13. Article
  14. Article
  15. Review
  16. Article
  17. Journal of parasitic diseases : official organ of the Indian Society for Parasitology · 2024
    Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

S E NelmsPlymouth Marine Laboratory, Prospect Place, Plymouth, PL1 3DH, UK. s.nelms@exeter.ac.uk.ORCID 0000-0002-2780-2877
J BarnettEnvironment and Sustainability Institute, University of Exeter, Cornwall, TR10 9EZ, UK.
A BrownlowScottish Marine Animal Stranding Scheme, SRUC Veterinary Services, Drummondhill, Inverness, IV2 4JZ, UK.
N J DavisonScottish Marine Animal Stranding Scheme, SRUC Veterinary Services, Drummondhill, Inverness, IV2 4JZ, UK.
R DeavilleCetacean Strandings Investigation Programme, Institute of Zoology, Regent's Park, London, NW1 4RY, UK.
T S GallowayBiosciences, Geoffrey Pope Building, University of Exeter, Devon, EX4 4QD, UK.
P K LindequePlymouth Marine Laboratory, Prospect Place, Plymouth, PL1 3DH, UK.
D SantilloGreenpeace Research Laboratories, Innovation Centre Phase 2, University of Exeter, Devon, EX4 4RN, UK.
B J GodleyCentre for Ecology and Conservation, University of Exeter, Cornwall, TR10 9EZ, UK. b.j.godley@exeter.ac.uk.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

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.

Indexed as

AnimalsEcosystemEnvironmental MonitoringMicroplasticsPlasticsMicroplasticsPlastics

Identifiers

PMID30705316
PMCPMC6355900

What OpenQuestion holds

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LicenceCC BY
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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.