Surveillance Plan of Lipophilic Marine Biotoxins in Molluscs from the Croatian Coast

Abstract

In the present study, a 4-year surveillance plan for the detection of lipophilic marine biotoxins in Mytilus galloprovincialis and Callista chione from different aquaculture farms and natural beds along the Central Adriatic coasts of Croatia was reported. The samples were analyzed by a validated LC-MS/MS method in accordance with the Regulation (EU) No 2019/627. Lipophilic marine biotoxins belonging to the okadaic acid group, except for azaspiracids, as well as yessotoxins were found at different concentrations, always below the maximum limits established by the Regulation (EC) No 853/2004. The seasonal distribution showed the highest values in summer months, and an interannual variability was also observed, probably due to environmental conditions aging on the density of harmful algal blooms. The comprehensive data reported in this study should help the future research in making advancing prediction models along the Eastern Adriatic coast.

Official controls for the determination of lipophilic marine biotoxins in mussels farmed along the Adriatic coast of Central Italy

“…The positive samples were detected from February to June during all the investigated years. 20 High levels of OA and DTX were detected along the French and Spanish coasts of the Mediterranean Sea, as well as from the western Mediterranean and Tunisia marine areas. 21 Haddouch et al 22 Abbreviations: AZA1, azaspiracid-1; AZA2, azaspiracid-2; AZA3, azaspiracid-3; DTX1, dinophysistoxins-1; DTX2, dinophysistoxins-2; OA, okadaic acid; PTX2, pectenotoxin-2; YTX, yessotoxin.…”

“…Similarly, the monitoring plan for lipophilic marine biotoxins in M. galloprovincialis and Callista chione samples derived from different aquaculture farms and natural beds along the Central Adriatic coasts of Croatia detected OA and YTX concentrations ranging from 25.6 to 87.0 μg equivalents/kg and from 0.030 to 1.375 mg equivalents/kg, respectively. The positive samples were detected from February to June during all the investigated years 20 …”