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[D-2.3.2 Biological Effects of Pollutants for Dolphins and Seales, and Bioaccumulation Process of Pollutants]

[Contact Person]

Tadasu K. Yamada
Senior Curator
Dept. of Zoology, National Science Museum
3-23-1 Hyakunin-cho, Shinjuku-ku, Tokyo 169 Japan
Phone +81-3-5332-7168, Fax +81-3-3364-7104
E-mail tkymda@tansei.cc.u-tokyo.ac.jp

[Total Budget for FY1990-1994]

40,649,000 Yen (FY1994 8,327,000 Yen)

[Abstract]

　During the course of study on marine mammal morphology and ecology, we have realized that their tissues have been more and more contaminated by man-made toxic pollutants like organochlorines and heavy metals. Our project has been concentrated on revealing how and to which degree the marine mammals are contaminated and how contarminants are concentrated within their body. Our results show serious pollutions in seas close to the highly industrialized countries but even in Arctic and Antarctic area where little influence of these toxic contaminants are expected. We convened an international symposium to provide scientists from 16 counties to present and discuss the actual situations found in their field area. We also tried to reveal pathogenic influences of these contaminants and genes.

[Key Words]

Dolphin, Seal, Marine Pollution, Organochlorine Compound, Heavy Metal