The Trial Model of the Recirculating Zooplankton-culture System

Abstract

The recirculating zooplankton-culture system is indispensable to the culture of the fish in space. So, as the first step, the trial model of this system was designed and manufactured. This model consists of three parts: the zooplankton-rearing tank, the filtration unit and the water-purification tank. In the culturing experiment of Moina macrocopa (Cladcera) using this model, it succeeded in high density culture of M. macrocopa. However, 120 hours after the experiment start, operation became impossible because of the fall of the filtration capability of the filtration unit. From the results of the experiment, it was showed that long-term culture is difficult in this model, and in order to make it possible, reconsideration of the filtration unit must be required.