Hiroshi Ueda, 1971-1975: Faculty of Fisheries, Hokkaido University, Hakodate. 1975-1980: Graduate School of Fisheries Science, Hokkaido University, Hakodate. 1980-1983: Postdoctoral Fellowship supported by Japanese Society of Promotion of Science (JSPS), National Institute for Basic Biology, Okazaki. 1983-1991: Assistant Professor, University of Occupational and Environmental Health, School of Medicine. Kitakyushu. 1985-1986: Visiting Scientist, Worcester Foundation of Experimental Biology. Worcester, USA. 1986-1987: Forgaty Fellowship supported by National Institute of Health (NIH), University of North Carolina, Chapel Hill, USA. 1991-2001: Associate Professor, Faculty of Fisheries, Toya Lake Station for Environmental Biology, Hokkaido University, Abuta. 2001-2015: Professor, Field Science Center for Northern Biosphere and Graduate School of Environmental Science, Hokkaido Univerity, Sapporo. 2015-2017: Specially Appointed Professor, Field Science Center for Northern Biosphere and Graduate School of Environmental Science, Hokkaido University, Sapporo. 2017-Present: Professor Emeritus, Hokkaido University. Technical Advisor, Hokkaido Aquaculture Promotion Corporation, Sapporo.