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2. Effect of the covering behavior of the juvenile sea urchin Strongylocentrotus intermedius on predation by the spider crab Pugettia quadridens;Agatsuma;Fisheries Science,2001
3. Ecology of Hemicentrotus pulcherrimus, Pseudocentrotus depressus, and Anthocidaris crassispina;Agatsuma,2007
4. Release of cultured seeds of the sea urchin, Strongylocentrotus intermedius (A. Agassiz), in the Pacific coastal waters of southern Hokkaido. I. Growth and reproductive cycle;Agatsuma;Scientific Reports of Hokkaido Fisheries Experimental Station,1988
5. Age determination, reproduction and growth of the sea urchin Hemicentrotus pulcherrimus in Oshoro Bay, Hokkaido, Japan;Agatsuma;Journal of the Marine Biological Association of the United Kingdom,2004