Regional Differences in Toxicity of Pufferfish <i>Fugu vermicularis radiatus</i> (Nashifugu)

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  • NOGUCHI Tamao
    Laboratory of Marine Biochemistry, Faculty of Agriculture, University of Tokyo
  • KIM Dong-Soo
    Department of Food Science and Technology, Faculty of Engineering, Kyungsung University
  • KANOH Sekio
    Tokyo Bunka Junior College
  • ASAKAWA Manabu
    Laboratory of Marine Biochemistry, Faculty of Agriculture, University of Tokyo
  • SAITO Toshio
    Laboratory of Marine Biochemistry, Faculty of Agriculture, University of Tokyo
  • TABETA Osamu
    Faculty of Fisheries, Nagasaki University
  • HASHIMOTO Kanehisa
    Food Science Laboratory, Faculty of Education, Ibaraki University

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  • ナシフグ <i>Fugu vermicularis radiatus</i> の毒性の地域差
  • ナシフグ Fugu vermicularis radiatus ノ ドクセイ

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The pufferfish Fugu vermicularis radiatus (Nashifugu) inhabiting the Yellow Sea, samples of which have recently caused food poisoning incidents in Japan, was examined for toxicity. Specimens were collected from several locations in the Yellow Sea and assayed for anatomical distribution of toxicity by the mouse bioassay method. Specimens collected from Norin-gyoku Sections 138 and 139 showed toxicity scores of 11±1 (mean±S. E.) MU/g muscle and 24±9MU/g testis, and those from Section 283 afforded higher scores of 71±18 and 127±72MU/g, respectively. These scores clearly exceeded the quarantine limit of tetrodotoxin toxicity in Japan (10MU/g edible part), suggesting that such fish had been responsible for the above incidents.

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