油脂酵母によるティグリオプスのシオミズツボワムシとの混合生産

概要

論文の詳細を見る
The most practical technique for the production of a copepod Tigriopus japonicus is a combination culture with a rotifer Brachionus plicatilis fed with baker's yeast.The present experiment was carried out to evaluate feeding ω-Yeast instead of baker's yeast as a food source for the establishment of more productive method. Chlorella minutissima was cultured in outdoor 200 ton concrete tanks A and B (10×15m with water depth of 1.4m) which were fertilized in advance and seawater was added gradually to full amount with aeration, until the density of 97×105 cells/ml in A, 145×105 cells/ml in B were attained Tigriopus were seeded with the rotifers at the density of 15/l in A, 29 /l in B. Then ω-Yeast and baker's yeast were supplied to the tank A and B respectively at the rate of 1 g/1 million rotifers/day.Total amounts of Tigriopus harvested during 89-days experiment period (61 times) were 168.0kg, 81.5kg (60 times) and the maximum densities attained were 22, 048/l and 10, 100/l for tank A and B respectively. The maximum densities for rotifers were 169/ml and 46/ml. A ?? erage percentage of copepodites were 44% in tank A, but 36% in tank B during the experiment, while those of adults were nearly same (26%, 27%). The amount of yeast used for 1 kg production of Tigriopus were 5.1kg and 7, 5kg for tanks A and B respectivley.
日本水産學會の論文