CHARACTERISTICS OF DIARRHETIC SHELLFISH POISONS IN LAIZHOU BAY, BOHAI SEA, CHINA

Laizhou Bay in the Bohai Sea is an important shellfish mariculture area in China. The research aims to ascertain compositions and contents of shellfish toxins inducing diarrhetic shellfish poisoning (DSP) in the sea area with a method known as solid phase adsorption toxin tracking. The results showed that seawater in Dongying and Laizhou sea areas presents the same composition of DSP toxins (including OA, DTX-1 and PTX-2). The content of DSP toxins in the Dongying sea area was generally higher than that in the Laizhou sea area. The study addresses the gap in the knowledge of DSP toxin compositions and changes in shellfish mariculture areas within the sea area and provides basic data enabling strengthened supervision, thus guaranteeing the food safety of shellfish.