论文部分内容阅读
在高温季节(6~9月),采用人工控温的方法,通过注射外源激素hCG和CPE,对日本鳗鲡进行了催熟试验.结果表明,在人工控制温度(18±2℃)条件下,雌性和雄性日本鳗鲡均可达到性成熟,诱导成熟率分别为73.33%和67.77%,而常温条件下(25~32℃)的诱导成熟率分别为0和33.33%.同时对控温条件下诱导成熟的部分雌性鳗鲡进行了催产,其排卵率为70%,受精率为32%,均接近或达到了低温季节相应的指标(平均分别为62.1%和34.2%).对胚胎发育过程也进行了观察,受精卵能正常发育,在22和24℃下,分别经过39 h 15 min和34 h 9 min孵化出膜.试验证明,在高温季节采用人工控温的方法诱导日本鳗鲡性成熟是可能的.
In the hot season (June-September), the Japanese eel (Anguilla japonica) was ripened by artificial temperature control by injection of exogenous hormones hCG and CPE.The results showed that under the conditions of artificial control temperature (18 ± 2 ℃) , While the female and male Japanese eel (Anguilla japonica) could reach sexual maturity, the induced maturation rates were 73.33% and 67.77%, respectively, while the induction maturation rates were 0 and 33.33% at room temperature (25 ~ 32 ℃) Induced maturation of part of the female Anguillae was oxytocin, the ovulation rate was 70%, fertilization rate was 32%, are close to or reach the corresponding indicators of the low temperature season (average 62.1% and 34.2% respectively.) Embryonic development is also carried out The observation showed that the fertilized eggs could develop normally and hatched at 39 h for 15 min and 34 h for 9 min respectively at 22 and 24 ° C. The experiment proves that it is possible to induce sexual maturation of Japanese eel by artificial temperature control in the hot season of.