Norwegian engineer develops automated system for counting rotifers

摘要

An aquaculture engineer in Norway has developed a rotifer-counting and feed-control system which he hopes will assist the larval-fish sector of the industry determine the best rotifer densities for different stages of production. Torodd Tennoy of Thelma AS in Trondheim said it is hoped that they will have a commercial prototype of the system available for purchase later in the year. Tennoy said that there are two parts to the system: the first part is a density counter which uses a computer and interconnected camera to automatically monitor rotifer density in small samples of water from up to 10 tanks. The other part is an attached feed-control device which opens and shuts valves and sends feed to rotifers in the culture tanks.