期刊
ENVIRONMENTAL POLLUTION
卷 267, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2020.115659
关键词
Microplastics density; Commercial fish; Demersal; Pelagic; FTIR
资金
- CONACYT [704355]
Microplastics (MPs) are currently one of the primary marine pollution problems around the world. MPs are distributed throughout the water column, dependent mainly on the density that is given by the polymer type, as well as the location, depth, and velocities of the water flows. This situation allows all aquatic organisms to be exposed to MPs. Furthermore, toxic substances can adhere to the MPs, making the consumption of fish with MPs a risk to human health. The aim of this study was to evaluate and characterize the microplastics present in the gastrointestinal tract of six species of fish which had the highest human consumption in Campeche, Mexico and their relationship with the density of MPs founded. A total of 316 microplastic particles from 240 individuals were found with 1.31 +/- 2.59 of microplastics per fish. The results indicate that there are differences (KWeH = 53.14) between the densities of the MPs present in demersal fish (1.41 +/- 0.4 g cm (-3)) with respect to the pelagic species (1.04 +/- 0.24 g cm (-3)). Likewise, differences were found between fibers, fragments, and pellets present in the studied fish with a pelagic: demersal ratio of 1: 2.4 for all microplastics. The demersal species Haemulon plumierii (n = 40) presented the highest number of MPs with 115 items in total, 73 fibers, and 42 fragments. The results of this research show the first evidence that the density of the material from which microplastics are made play a key role determining their fate in marine fish habitats. (c) 2020 Elsevier Ltd. All rights reserved.
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