engleski

ASP and PSP toxins in cockle (Acanthocardia tuberculata) and sweet clam (Calista chione) from the Central Adriatic Sea (Croatia)

Searching for the ASP and PSP toxins in seafood is of great importance for consumer protection, but it is also an indicator of changes in the marine ecosystem that has a production as an outcome. The constant increase of toxic phytoplankton species appearance, togehter with the spatial spread of species has to lead to intensification of biotoxins research. Potentially important species in shellfish aquaculture, cockle Acanthocardia tuberculata and sweet clam Calista chione are widespread in the Croatian Adriatic Sea. In order to detected the potential toxin profile of the natural populations of cockle and sweet clam were monitored from March 2009 to February 2010. Samples were taken monthly fromthe station located in the estuarine area of the central Adriatic Sea. Toxin profile of cockle was dominated by the saxitoxin (STX), while smooth clam was mainly PSP or ASP toxins free. The cockle demonstrated continuous presence of low PSP tokins concentrations and the occcasional low concentrations of ASP toxins (late spring and early summer). HPLC-FLD with pre-column oxidation and HPLC-UV-DAD methods were employed for PSP and ASP toxins determination, respectively.This research had shown substantial differences in the accumulation of ASP and PSP toxins between the two species that were studied.

ASP; PSP; Adriatic Sea; cockle; sweet clam

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