Oyster Crassostrea gigas, a good model for correlating viral and chemical contamination in the marine environment

Fiorito, Filomena; Di Concilio, Denise; Lambiase, Sara; Amoroso, Maria Grazia; Langellotti, Antonio L.; Martello, Anna; Esposito, Mauro; Galiero, Giorgio; Fusco, Giovanna

Oyster Crassostrea gigas, a good model for correlating viral and chemical contamination in the marine environment

2021

To establish a relationship between viruses and chemicals, they were analysed in oyster Crassostrea gigas from an Italian experimental station. The chemicals concentrations were: Σ6 NDL-PCBs 0.82–7.12 ng g⁻¹; BaP LOQ (<0.2 μg kg⁻¹) to 1.2 μg kg⁻¹; PAH4 LOQ (<0.2 μg kg⁻¹) to 9.8 μg kg⁻¹; Cd 0.073–0.365 mg kg⁻¹; Pb 0.010–0.487 mg kg⁻¹; and Hg < LOQ (0.089 mg kg⁻¹). The viruses identified included: noroviruses (NoVGI/GII), astrovirus (AsV), rotavirus (RV), adenovirus (AdV), and sapovirus (SaV), while hepatitis A, hepatitis E, and Aichi viruses were not detected. Significant correlations were observed for NDL-PCBs with NoVGI, NoVGII, and AdV; BaP and PAH4 with NoVGI and AsV; Cd with RV; Pb with NoVGI and AsV; PAHs with Pb; AsV with NoVGI; and AdV with NoVGII. The study indicated as C. gigas is a model for correlating pollutants and foodborne viruses, whose co-presence may represent an additional food safety risk.

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