New evidence of pectenotoxins in farmed bivalve molluscs from Sardinia (Italy)

  • Alessandro G. Mudadu Veterinary Public Health Institute of Sardinia, Sassari, Italy.
  • Anna Maria Bazzoni Regional Environmental Protection Agency of Sardinia, Sassari, Italy.
  • Rita Melillo | rita.melillo@izs-sardegna.it Veterinary Public Health Institute of Sardinia, Sassari, Italy.
  • Cecilia Teodora Satta University of Sassari; Regional Agency for Agricultural Research, Olmedo (SS), Italy.
  • Simona Cau Veterinary Public Health Institute of Sardinia, Sassari, Italy.
  • Virgilio Congiu Veterinary Public Health and Food Security Service of the Region of Sardinia, Lanusei (NU), Italy.
  • Barbara Soro Veterinary Public Health Institute of Sardinia, Sassari, Italy.
  • Riccardo Bazzardi Veterinary Public Health Institute of Sardinia, Sassari, Italy.
  • Giuseppa Lorenzoni Veterinary Public Health Institute of Sardinia, Sassari, Italy.
  • Gabriella Piras Veterinary Public Health Institute of Sardinia, Sassari, Italy.
  • Nadia Bardino Veterinary Public Health Institute of Sardinia, Sassari, Italy.
  • Bruna Vodret Veterinary Public Health Institute of Sardinia, Sassari, Italy.
  • Sebastiano Virgilio Veterinary Public Health Institute of Sardinia, Sassari, Italy.

Abstract

Several planktonic dinoflagellates can produce lipophilic phycotoxins that represent a significant threat to public health as well as to shellfish and fish farming. Poisoning related to some of these toxins is categorised as diarrhetic shellfish poisoning. We analysed 975 shellfish samples from Tortolì in the central-eastern region of Sardinia (Italy) from January 2016 to March 2020, to investigate the prevalence of different lipophilic marine biotoxins in mollusc bivalves. The results highlighted the predominant presence of toxins belonging to the okadaic acid group in all samples with toxin concentrations exceeding legal limits, and revealed the new occurrence of pectenotoxins in oysters and clams with a winter seasonality in recent years. The origin of shellfish toxicity was associated with the same Dinophysis species, mainly D. acuminata. Based on both these results and other precedents, monitoring and recording systems are strongly recommended.

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Published
2021-06-21
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Original Articles
Keywords:
Dinophysis species, Pectenotoxins, Seasonality, Diarrhoetic shellfish poisoning
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How to Cite
1.
Mudadu AG, Bazzoni AM, Melillo R, Satta CT, Cau S, Congiu V, Soro B, Bazzardi R, Lorenzoni G, Piras G, Bardino N, Vodret B, Virgilio S. New evidence of pectenotoxins in farmed bivalve molluscs from Sardinia (Italy). Ital J Food Safety [Internet]. 2021Jun.21 [cited 2021Sep.25];10(2). Available from: https://www.pagepressjournals.org/index.php/ijfs/article/view/9281

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