There are several reports on the growth of A. japonicus whichwere fed
biodeposits in laboratories or field studies (Table 3). Ito (1995) found that
A. japonicus whichwere co-cultured with sea urchins in a suspended cage
grew from 0.1 g to 1.3 g in wet weight during 176 days (SGR=1.7%),
and suggested that the biodeposits excreted from sea urchins which
were fed seaweeds contributed to the growth of A. japonicus. In the