Mass Production of Resting Egg of Korean Rotifer, Brachionus plicatilis (L and S-type)

Mass production of resting egg of the rotifer, Brachionus plicatilis was carried out in 1 tank for L-type rotifer and in 1 and 4 tank for S-type rotifer. L-type rotifer was fed on concentrated Chlorella + baker's yeast and only baker's yeast for 15 days. S-type rotifer was fed on concentrated Chlorella in 1 tank for 7 days and frozen Chlorella + baker's yeast in 4 for days. Total number of resting egg and number of resting egg from rotifers and 1 g dry weight diet for L-type rotifer fed on Chlorella + baker's yeast were eggs, eggs and eggs, respectively. These were higher than those of rotifer fed on baker's yeast only. Total number of resting egg and number of resting egg from rotifers and 1 g dry weight diet for S-type rotifer fed on concentrated Chlorella in 1 tank were eggs, eggs and eggs, respectively. In 4 tank with frozen Chlorella + baker's yeast, these were eggs, eggs and eggs, respectively. This result suggests that S-type rotifer are better than L-type rotifer for the mass production of resting egg of the Korean rotifer.