‘The Plastic Nile’: First Evidence of Microplastic Contamination in Fish from the Nile River (Cairo, Egypt)
Open Access
- 24 March 2020
- Vol. 8 (2), 22
- https://doi.org/10.3390/toxics8020022
Abstract
The presence of microplastics (MPs) in the world’s longest river, the Nile River, has yet to be reported. This small-scale study aimed to provide the first information about MPs in the Nile River by sampling the digestive tracts of two fish species, the Nile tilapia (Oreochromis niloticus, n = 29) and catfish (Bagrus bayad, n = 14). Fish were purchased from local sellers in Cairo, and then their gastrointestinal tracts were dissected and examined for MPs. Over 75% of the fish sampled contained MPs in their digestive tract (MP prevalence of 75.9% and 78.6% for Nile tilapia and catfish, respectively). The most abundant MP type was fibers (65%), the next most abundant type was films (26.5%), and the remaining MPs were fragments. Polyethylene (PE), polyethylene terephthalate (PET) and polypropylene (PP) were all non-destructively identified by attenuated total reflectance Fourier transform infrared spectroscopy. A comparison with similar studies from marine and freshwater environments shows that this high level of MP ingestion is rarely found and that fish sampled from the Nile River in Cairo are potentially among the most in danger of consuming MPs worldwide. Further research needs to be conducted, but, in order to mitigate microplastic pollution in the Nile River, we must act now.This publication has 51 references indexed in Scilit:
- Freshwater plastic pollution: Recognizing research biases and identifying knowledge gapsWater Research, 2018
- Microplastics contaminate the deepest part of the world's oceanGeochemical Perspectives Letters, 2018
- Export of Plastic Debris by Rivers into the SeaEnvironmental Science & Technology, 2017
- River plastic emissions to the world’s oceansNature Communications, 2017
- Large microplastic particles in sediments of tributaries of the River Thames, UK – Abundance, sources and methods for effective quantificationMarine Pollution Bulletin, 2017
- Microplastic pollution of lakeshore sediments from remote lakes in Tibet plateau, ChinaEnvironmental Pollution, 2016
- Microplastic contamination in an urban area: a case study in Greater ParisEnvironmental Chemistry, 2015
- The deep sea is a major sink for microplastic debrisRoyal Society Open Science, 2014
- High-levels of microplastic pollution in a large, remote, mountain lakeMarine Pollution Bulletin, 2014
- Plastic in the Thames: A river runs through itMarine Pollution Bulletin, 2014