Institution: | Division of Biological Sciences, Graduate School of Science, Hokkaido University, Sapporo 060. Japan;Biological Laboratory, Sapporo University, Sapporo 062, Japan;Department of Fisheries, Faculty of Agriculture, Kyushu University, Fukuoka 812, Japan;The Martin Ryan Marine Science Institute and Department of Botany, University College Galway. The National University of Ireland, Galway, Ireland |