Journal
ENVIRONMENTAL RESEARCH
Volume 159, Issue -, Pages 135-142Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.envres.2017.07.043
Keywords
Biomarkers; Oxidative stress; Effects; Mediterranean Sea; FTIR
Funding
- European Commission DG Environment project: Support Mediterranean Member States towards coherent and Coordinated Implementation of the second phase of the MSFD - MEDCIS [11.0661/2016/748067/SUB/ENV.C2]
- EU through the European Maritime and Fisheries Fund (EMFF) within the National Program of collection, management and use of data in the fisheries sector and support for scientific advice regarding the Common Fisheries Policy
- Programme of Promotion of Biomedical Research and Health Sciences [CIBEROBN CB12/03/30038]
- University of the Balearic Islands
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A total of 417 striped red mullet, Mullus surmuletus, were analyzed to study microplastic ingestion and livers of fish were assessed to study effects of microplastics. Nearly one third (27.30%) of the individuals were quantified to ingest microplastics although there was no evidence of oxidative stress or cellular damage in the liver of fish which had ingested microplastics. A small increase in the activity of glutathione S-transferase (GST) of M. surmuletus was detected which could be suggesting an induction of the detoxification systems but these findings should be tested in laboratory conditions under a controlled diet and known concentration of microplastics. Fish from trammel fisheries, operating closer to land and targeting larger individuals, showed higher mean ingestion values than fish from trawling fisheries, and were related to body size, as microplastics ingested increased with total fish length. Consequently, ingestion values of microplastics were not related to sampling distance from land giving further evidence of the ubiquity of microplastics in the marine environment. Finally, Fourier Transform Infrared Spectroscopy (FTIR) analysis showed that the vast majority of microplastics were filament type and polyethylene terephthalate (PET) was the main identified component.
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