Toxic marine microalgae and associated phycotoxins in shellfish: 14 years of data from the Italian coasts
| Autor: | Accoroni, Stefano, Cangini, Monica, Angeletti, Roberto, Arcangeli, Giuseppe, Bacchiocchi, Simone, Barile, Nadia, Contiero, Lidia, Costa, Antonella, Di Taranto, Aurelia, Escalera, Laura, Fedrizzi, Giorgio, Garzia, Angela, Longo, Francesca, Macaluso, Andrea, Melchiorre, Nunzia, Milandri, Anna, Milandri, Stefania, Montresor, Marina, Neri, Bruno, Neri, Francesca, Gallo, Pasquale, Piersanti, Arianna, Rubini, Silva, Scortichini, Giampiero, Suraci, Chiara, Susini, Francesca, Vadrucci, Maria Rosaria, Verniani, Daniela, Virgilio, Sebastiano, Vivaldi, Barbara, Vodret, Bruna, Totti, Cecilia, Zingone, Adriana |
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| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: | |
| DOI: | 10.5281/zenodo.7033019 |
| Popis: | Along the Italian coasts, toxins of algal origin in wild and cultivated shellfish have been reported since the 1970s. In this study, we used data gathered by the Veterinary Public Health Institutes and the Italian Environmental Health Protection Agencies from 2006 to 2019 to investigate toxicity events and relate them to the distribution of toxic species. Among detected toxins (OA and analogs, YTXs, PTXs, STXs, DAs, AZAs), OA and YTX were those most frequently reported in cases of seafood contamination. Levels of those toxins exceeding regulatory limits for OA were associated with high abundances of Dinophysis spp. and for YTX with blooms of Gonyaulax spinifera, Lingulodinium polyedra, and Protoceratium reticulatum. Seasonal blooms of Pseudo-nitzschia spp. occurred all along the Italian coast, but DA was only occasionally found in shellfish, at concentrations consistently below the regulatory limit. Alexandrium was recorded in many more areas than STXs, which only rarely exceeded the regulatory limit. Azadinium was sporadically recorded, and AZAs were sometimes detected in low quantities. Among the emerging toxins, PLTX-like toxins often accumulated in wild mussels and sea urchins due to the occurrences of Ostreopsis cf. ovata. Overall, Italian coastal waters harbour numerous potentially toxic species, with a few HAB hotspots related to DSP toxins. Still, rare cases of intoxications have occurred so far, reflecting the whole Mediterranean Sea conditions. Corresponding author's email: s.accoroni@univpm.it |
| Databáze: | OpenAIRE |
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