Occurrence of microplastics (MPs) in the gastrointestinal tract of fishes: A global systematic review and meta-analysis and meta-regression

The presence of Microplastics (MPs) in food has become a global health concern in the last two decades. In this study, an attempt was made to obtain articles about the occurrence of MPs in the gastrointestinal tract (gt) of fishes using searching the Scopus and PubMed databases from 1 January 1990 t...

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Published in:The Science of the total environment 2022-04, Vol.815, p.152743-152743, Article 152743
Main Authors: Zazouli, Mohammadali, Nejati, Habib, Hashempour, Yalda, Dehbandi, Reza, Nam, Van Thai, Fakhri, Yadolah
Format: Article
Language:English
Subjects:
Animals
Environmental Monitoring
Fish
Fishes
Gastrointestinal Tract
Meta-analysis
Microplastics
Plastics
Systematic review
Water Pollutants, Chemical - analysis
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Summary:The presence of Microplastics (MPs) in food has become a global health concern in the last two decades. In this study, an attempt was made to obtain articles about the occurrence of MPs in the gastrointestinal tract (gt) of fishes using searching the Scopus and PubMed databases from 1 January 1990 to 10 August 2021. The occurrence of MPs was meta-analyzed using the random effect model (REM). The results indicate that pooled occurrence of MPs in gastrointestinal of fishes was 2.76 P/gt: 95%CI:2.65–2.86 P/gt. Occurrence MPs in gastrointestinal of fishes in closed water sources (5.86 P/gt) was higher than free water sources (2.46 P/gt). In addition, the rank order of water sources based on occurrence MPs in gastrointestinal of fish was Lake (5.50 P/gt) > Estuary (5.46 P/gt) > River (2.91 P/gt) > Bay (2.85 P/gt) > Sea (2.58 P/gt) > Ocean (1.29 P/gt). The lowest and highest occurrence MPs in gastrointestinal of fishes were observed in high-income economies (1.45 P/gt) and low-income economies (8.08 P/gt), respectively. The higher frequency of color in MPS was related to blue with polyethylene-type polymers. Therefore, control plans to reduce the occurrence of MPs in fishes is recommended. [Display omitted] •The occurrence of MPs in fishes grown in enclosed water resources was higher than other fishes•The occurrence of MPs in the gastrointestinal tract of fishes in lagoon, estuary, and lake was higher than other water resources•The occurrence of MPs was higher in low-income countries, recommending control programs in these more countries
ISSN:0048-9697
1879-1026
DOI:10.1016/j.scitotenv.2021.152743