中文摘要：

于2012年4月11日至2012年10月3日通过对半滑舌鳎雌性亲鱼投喂沙蚕等鲜活饵料进行强化培育后,结果发现,半滑舌鳎雌鱼生长极快,性腺发育时间提前,产卵期延长,产卵量、受精率和孵化率等显著提高,亲鱼产卵后死亡率大幅度降低。半滑舌鳎亲鱼经过4个月强化培育后,A组（实验组）平均体重由1.25 kg增至1.85 kg,净增重和日增重分别为0.6 kg和4.92 g/d,明显高于B组（对照组）的0.34 kg和2.79 g/d;截至产卵前,A组中198条亲鱼有118条性腺发育成熟,成熟率为59.60%,而B组仅有67条性腺发育成熟,成熟率为33.84%;A组性腺发育成熟的亲鱼产卵后仅有11条死亡,死亡率为9.32%,相反B组有28条亲鱼产卵后死亡,死亡比例高达41.79%,比A组高出32.47%;A组亲鱼性腺于5月26日开始发育,比B组提前了19 d,于9月10日开始产卵,比B组提前了6 d。A组产卵期为24 d,比B组延长了13d;A组亲鱼平均产卵量和平均上浮卵量分别为411.3 mL和263.2 mL,分别高出B组60.6 mL和71.2 mL,且A组平均上浮率（80.97%）明显高于B组（67.65%）;A组和B组平均受精率分别为60.37%和47.29%,A组比B组高出13.08%,A组平均孵化率为53.28%,B组为22.40%,A组是B组的2.38倍。两组畸形率都较低,分别为2.36%和4.73%,但A组畸形率不足B组一半。

英文摘要：

We have cultivated the female broodstock of half-smooth tongue sole intensively by using nereid from llth April 2012 to 3rd October 2012. It turned out that the females grew rapidly and the gonad development had been brought forward, the duration of spawning had been extended, egg laying amount, fertilization rate, hatching rate, etc. had risen notably, and mortality rate had a significant reduction which was the most important. After 4 months culturing, the average body weight of Group A rose from 1.25 kg to 1.85 kg, the net gain and average daily gain were 0.6 kg and 4.92 g/d respectively, which were significantly higher than those of Group B, which were 0. 34 kg and 2. 79 g/d respectively. Before spawning, 118 individuals had matured, the mature rate was 59.60%. However, only in 67 individuals in Group B the gonad had matured, the mature rate was 33.84%. In Group A, 11 individuals were dead, the mortality rate was 9.32% , by contrast, there were 28 individuals dead and the mortality rate was 41.79% , which was much higher than 32.47% over Group A. Gonad of parental fish of Group A began to develop on 26th May, which was 19 days earlier than Group B, and it began to spawn on 10th September, which was 6 days earlier. The spawning duration of Group A was 24 days, 13 days were extended compared with Group B. Mean fecundity and mean floating eggs were 411.3 mL and 263.2 mL separately, which was 60.6 mL and 71.2 mL higher than Group B respectively, also the average of floating rate of Group A （80.97 % ） was notably higher than Group B （67.65%）. The fertilization rates of the 2 groups were 60.37% and 47.29% separately. Group A was 13.08% higher than Group B. The hatching rates of the 2 groups were 53.28% and 22.40% , Group A was 2.38 times as much as Group B. Both of the 2 groups＇ aberration rates were low, 2.36% and 4.73% separately, however, Group A was less than half of Group B.