title: Occurrence of paralytic shellfish poisons in Thai freshwater puffers.
abstract: Screening tests were carried out on the toxicity of freshwater puffers Tetraodon leiurus complex and Tetraodon suvatii collected from Udonthani province, north-eastern Thailand. Toxicity was highest in the liver and varied according to the location and season of fish catch. Fish which were reared in tap water for 3 months reduced the toxicity substantially. Partial purification was achieved by an ultrafiltration technique. Toxin components were consequently identified by high-performance liquid chromatography. It was found that toxins separated from the eggs, liver, skin and muscle of these puffers were composed of saxitoxin, neosaxitoxin and decarbamoylsaxitoxin.
authors.affiliation: Fishery Technological Development Institute, Department of Fisheries, Chatuchak, Bangkok, Thailand.
authors.forename: A
authors.initials: A
authors.lastname: Kungsuwan
authors.forename: O
authors.initials: O
authors.lastname: Arakawa
authors.forename: M
authors.initials: M
authors.lastname: Promdet
authors.forename: Y
authors.initials: Y
authors.lastname: Onoue
mesh_terms: D000818:Animals; D001681:Biological Assay; D002851:Chromatography, High Pressure Liquid; D005400:Fishes, Poisonous / Q000378:metabolism*; D008387:Marine Toxins / Q000302:isolation & purification*; D009466:Neuromuscular Blocking Agents / Q000302:isolation & purification*; D012530:Saxitoxin / Q000031:analogs & derivatives / Q000302:isolation & purification; D012758:Shellfish / Q000032:analysis; D013785:Thailand
chemical_list: D008387:Marine Toxins; D009466:Neuromuscular Blocking Agents; D012530:Saxitoxin; C034903:decarbamylsaxitoxin; C034902:neosaxitoxin