RESTING EGG OF ROTIFER AND ITS PRODUCTION METHOD

摘要

PPROBLEM TO BE SOLVED: To provide a resting egg of rotifer which allows long-term preservation while maintaining hatching rate by solving the problem that preservation of resting eggs of rotifer which is useful as feed for aquatic animals under a normal condition leads to a deterioration in hatching rate, and provide a storing method therefor. PSOLUTION: It is elucidated that a deterioration in hatching rate of the resting egg of rotifer is primarily caused by the oxidation of a main constituent by oxygen present in the environment. It is thereby recognized that resting egg from which oxygen is removed can be kept for a long term by maintaining the hatching rate. In the concrete, a rotifer resting egg is accommodated in an oxygen-free container, wherein a deoxidizer and an inert gas are enclosed in an oxygen impermeable container to be deaerated. By so doing, the container is kept free from oxygen to enclose resting eggs. PCOPYRIGHT: (C)2008,JPO&INPIT