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Anatomical distribution and profiles of the toxins in highly PSP-infested scallops from Ofunato Bay during 1980-1981.

1983; Springer Science+Business Media; Volume: 49; Issue: 2 Linguagem: Inglês

10.2331/suisan.49.233

1349-998X

Junichi Maruyama, Tamao Noguchi, Yoshio Onoue, Yochi UEDA, Kanehisa HASHIMOTO, Shunichi KAMIMURA,

Marine and coastal plant biology

During 1980-1981, highly PSP-infested specimens of the scallop Patinopecten yessoensis were collected from Ofunato Bay. Iwate Prefecture. The scallop specimens were shucked, dissected, and examined on the anatomical distribution of the toxicity. Toxins were prpared from the fresh or frozen digestive glands and analyzed by TLC and electrophoresis. Toxification of the scallop in 1981 was much more intense than before. The toxicity reached 2, 100-3, 500MU/g in digestive gland, 210-600MU/g in rectum, 160-230MU/g in foot, 110-160MU/g in gonad, 75-110MU/g in mantle, 71-110MU/g in gill, and 16-43MU/g in addutuctor muscle. The toxicity of 1981 scallops was about 10 times higher in degestive gland and 2-4 times higher in other parts (except mantle) than that of 1980 scallops. In 1980 and 1981 scallops, gonyautoxin 1 was predominant; gonyautoxins 2-5, saxitoxin and neosaxitoxin were also found.