翘嘴红鲌繁殖技术研究

Study on the Artificial Propagation Techniques of Erythtoculer ilishaeforhis(Bleeker)

通过试验研究了翘嘴红鲌亲鱼培育、人工催产、受精卵孵化的技术。结果表明:天然水域捕捞的翘嘴红鲌鱼种在池塘条件下,通过人工培育能够达到性成熟,其成熟系数为14.46,相对繁殖力为30.28。亲鱼采用一次性注射组合催产剂,自然产卵的方式,受精卵在孵化环道中完成胚胎发育孵化出苗,LRH-A2 1.2μg+DOM 5 mg和LRH-A2 1.2μg+HCG 1 000 IU+PG 0.8 mg催产剂组合具有较高的催产率和受精率。

Pass through the tests, the artificial propagation techniques of Erythtoculer ilishaeforhis （Bleeker） in cultivating a brood fish,artificial inducement for spawning,Fertilization egg incubation were studied. The test results show ：Erythtoculer ilishaeforhis（Bleeker）,captured from natural water area, can achieve sexual maturity in the pond by artificially cultivation and the rate of maturity is 100%. The mature coefficient of ovary in female is 14.46% and relative yield of ovum is 30.28×10^4/kg per fish, which is the same with mature fish captured from natural water area. The optimal combination group and dosage were LRH-A2 1.2μ g ＋DOM 5 mg or LRH-A2 1.2 μg＋HCG 1 000 IU＋PG 0.8 mg, which based on the measurement of one-off injection in pectoral fin, naturally spawning in the pond and hatching the fertilized egg in the incubation circuit.