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1996～ 2 0 0 0年 ,先后 4次 5批从日本引进红鳍东方受精卵 5.2 kg(约 30 2万粒 )进行苗种培育试验 ,其中 3次获得成功 ,引进成功率为 75% ,共培育出体长 2 5～ 30 mm的幼鱼 60万尾。受精卵孵化率分别为 50 %、0 %、70 %和 4 0 %。经过 4 2～ 50 d的培育 ,幼鱼培育成活率分别为 64.7%、0 %、4 3.9%和 51.7%。孵化水温为 16～ 18℃ ,幼鱼培育水温为 17～ 2 2℃。试验结果表明 ,引进红鳍东方受精卵进行苗种培育在技术上是可行的。
From 1996 to 2000, four batches of 5 × fertilized eggs from Japan were introduced into the nursery culture test. Among them, 3 were successful and the success rate of introduction was 75% A total of 600,000 young larvae of 25-30 mm in length were cultivated. The hatching rates of fertilized eggs were 50%, 0%, 70% and 40% respectively. After 4 2 ~ 50 d incubation, the survival rates of juvenile fish breeding were 64.7%, 0%, 4 3.9% and 51.7% respectively. Incubation temperature is 16 ~ 18 ℃, juvenile fish culture temperature is 17 ~ 22 ℃. The experimental results show that it is technically feasible to introduce the fertilized egg of T. trifoliata to seed culture.