1965:Master of Agricultural Science, Tohoku University, Japan
1965:Assistant Professor, Faculty of Agriculture, Tohoku University
1972:Ph.D. in Agricultural Science, Tohoku University (1974-1976:NRC Postdoctoral Fellow, Halifax, Canada)
1985:Chief of Research Section, National Research Institute of Aquaculture, Fisheries Agency, Japan
1991:Professor, Faculty of Agriculture, Tohoku University
1999:Professor, Graduate School of Agricultural Science, Tohoku University
2001:Dean and Professor, Graduate School of Agricultural Science, Tohoku University
2003:Professor Emeritus, Tohoku University
He carried out research on the mechanisms of reproduction and bio-defense in shellfish. In 1978, he received the Encouragement Award (The Japanese Society of Fisheries Science, Tokyo, Japan). In 2002, he received the Award of Merit (The Japanese Society of Fisheries Science). In 2007, he received the Award of Merit (the Japanese Society for Aquaculture Research). 2000-2003:President of Japan Aquaculture Society. 1995-2003:Director General of the Foundation of Oyster Research Institute, Japan. 2003-2020:President and Board Chairman of the Foundation of Oyster Research Institute. 2005-the present:President of the World Oyster Society.