Abstract
The presence of paralytic shellfish poisoning (PSP), diarrhetic Shellfish Poisoning (DSP), tetrodotoxin (TTX) and its analogues (11-oxoTTX, 4.9-anhydro-11-oxoTTX, 4.9-anhydroTTX, 5-deoxyTTX, 5.11-dideoxyTTX, 5.6.11-trideoxyTTX and 4.9-anhydro-5.6.11-trideoxy TTX) were initially investigated in Carcinoscorpius rotundicauda collected from south China with Liquid chromatography-tandem mass spectrometry (LC–MS–MS) and mouse bioassay. The TTX toxicity was 10.8 ± 3.9 MU/g muscle, 6.3 ± 0.6 MU/g viscera and 6.3 ± 0.6 MU/g eggs in mean value. Merely dcGTX2 and dcSTX were detected in ten Specimens, ranging from 0.01 to 0.77 μg/g. Analyses suggested that these Carcinoscorpius rotundicauda contain TTX and its analogues as the major toxin and PSPs as the minor, respectively. Besides, no DSPs were found.
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