Occurrence of microplastics and heavy metals accumulation in native oysters Crassostrea Gasar in the Paranaguá estuarine system, Brazil

The ubiquitous presence of contaminants in the marine environment is considered a global threat to marine organisms. Heavy metals and microplastics are two distinct classes of pollutants but there are interactions between these two stressors that are still poorly understood. We examined the potentia...

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Bibliographic Details
Published in:Marine pollution bulletin 2021-05, Vol.166, p.112225, Article 112225
Main Authors: Vieira, Khauê Silva, Baptista Neto, José Antônio, Crapez, Miriam Araujo Carlos, Gaylarde, Christine, Pierri, Bruno da Silva, Saldaña-Serrano, Miguel, Bainy, Afonso Celso Dias, Nogueira, Diego José, Fonseca, Estefan Monteiro
Format: Article
Language:English
Subjects:
Aluminum
Animals
Bioaccumulation
Bioavailability
Brackishwater environment
Brazil
Cadmium
Chromium
Contaminants
Contamination
Copper
Crassostrea
Environmental Monitoring
Estuaries
Heavy metal
Heavy metals
Humans
Iron
Lead
Manganese
Marine environment
Marine molluscs
Marine organisms
Marine pollution
Mercury
Mercury (metal)
Metals
Metals, Heavy - analysis
Microplastic
Microplastics
Molluscs
Mollusks
Nickel
Oysters
Plastics
Pollutants
Pollution
Shellfish
Water Pollutants, Chemical - analysis
Zinc
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Summary:The ubiquitous presence of contaminants in the marine environment is considered a global threat to marine organisms. Heavy metals and microplastics are two distinct classes of pollutants but there are interactions between these two stressors that are still poorly understood. We examined the potential relationship between heavy metals (Al, Cr, Mn, Fe, Ni, Cu, Zn, As, Cd, Ba, Hg, Pb) and microplastic particles in oysters sampled along the Paranaguá Estuarine System. The results suggested high levels of As and Zn in the bivalves, which are destined for human consumption. Microplastic particles were found in oysters from all sampled locations, demonstrating the spread of this pollutant in the marine environment and its ability to bioaccumulate in oysters. However, our data did not demonstrate a direct relationship between microplastics and heavy metals, suggesting that these particles are not the main route for heavy metal contamination of oysters in the Paranaguá Estuarine System. •Oysters were confirmed as effective bioindicators of environmental quality.•Particular attention with arsenic levels.•MPs were found at all sampled locations.•Influence of MPs on metals should be better studied.
ISSN:0025-326X
1879-3363
DOI:10.1016/j.marpolbul.2021.112225