Red Tides：Biology, Environmental Science, and Toxicology
An incident of paralytic shellfish poisoning due to ingestion of cultured purple clam (Soletellina diphos) occurred in southern Taiwan on January 1, 1986. Monitoring of phytoplankton for the causative organism was undertaken soon after the accident. A species of dinoflagellate - Protogonyaulax tamarensis was collected and studied. Acid extract of cultured cells of this alga was found to be toxic with mouse assay.