サンゴ礁に生息する貝類における毒の分布

概要

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The occurrence of various toxins in the turban shell Turbo argyrostoma, led us to investigate the distribution of these toxins in other species of molluscs associated with coral reefs. In the present study, the viscera of four species of gastropods, Turbo argyrostoma, Turbo marmorata, Tectus pyramis and Tectus nilotica maxima and 3 species of bivalves, Tridacna crocea, Tridacna squamosa and Tridacna maxima, were surveyed for the presence of toxins. The results showed that T. marmorata contained an appreciable amount of a water soluble toxin which differed from the one found in the turban shell. A remarkable toxicity was also recognized in the acetone soluble fraction of the hepatopancreas of T. maxima. The toxin seemed to differ from the quaternary amines previously found in T. argyrostoma. No significant toxicity was observed in the specimens of T. pyramis, T. nilo-tica maxima, T. crocea, and T. squamosa.
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