I want to restore extinct avian species. The number of extinct and endangered species is rapidly increasing due to the environmental destruction of wildlife habitats and the detrimental effects of environmental pollutants. In particular, highly pathogenic avian influenza in recent years has become a worldwide threat. At present, however, it is difficult to preserve avian germ cells (sperm and eggs) for a long period, and in vitro fertilization techniques (one of artificial fertilization methods) are not well established. Currently, I am conducting research aimed at developing technologies that can restore quail and chicken individuals in vitro by referring to mammalian fertility treatments and somatic cell nuclear transfer (clone) techniques.

Several animals such as birds, reptile and most urodele amphibians exhibit physiologically polyspermic fertilization, in which the entry of several sperm into one egg is permitted. Especially, the avian egg receives a markedly higher number of sperm than other polyspermic species. However, cleavage proceeds even when the sperm number incorporated into egg cytoplasm is low, but no germ cells are formed. I am currently studying the molecular mechanisms of early germ cell development.

My hobby is touring round historic sites. In particular, I learn about the anecdotes of Samurai (Sengoku Warlord) who ran through the Sengoku period based on materials available at ancient battlefield sites, temples and shrines. Also, Hokkaido is a region where nature is abundant, so I enjoy its unique landscape and mountain climbing. It’s very refreshing. I want to climb all 100 famous mountains in Hokkaido.