Plastic density as a key factor in the presence of microplastic in the gastrointestinal tract of commercial fishes from Campeche Bay, Mexico

Periodo de realización: 1900/01/01 al 2020/01/01

Tipo: Artículo científico

Lugar(es) de estudio: Polígono de zona geográfica, Bahía de Campeche
Resumen: "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 thepolymer 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, makingthe 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 thehighest 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 ofmicroplastics per fish. The results indicate that there are differences (KWeH ¼ 53.14) between the densities of the MPs present in demersal fish (1.41 ± 0.4 g cm3) with respect to the pelagic species(1.04 ± 0.24 g cm3). 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 speciesHaemulon plumierii (n ¼ 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 fromwhich microplastics are made play a key role determining their fate in marine fish habitats."

Información de ECOSUR

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