卡拉白鱼人工繁殖及苗种培育技术∗

摘要

The key techniques of artificial propagation technology for Chalcalburnus Chalcoides aralensis were reported, which were reserve parent fish rearing, artificial spawning, egg hatching and fry hatching. When the mixture of three fish oxytocin drugs, Luteinizing hormone analogs ( LRH⁃A2 4 μg/kg), Maleic acid to Europe (DOM 2 mg/kg) and human chorionic gonadotropin (HCG 0�12 mg/kg) was injected into parent fish, and the methods of artificial spawning, natural insemi⁃nation or artificial dry insemination and flowing hatching in hatching barrel were used, fertilization rate of Chalcalburnus Chalcoides aralensis reached 97% and hatching rate of fry was 83�60%. Culti⁃vation of fry and fingerling and pond farming technology were briefly discussed. At fry growth stage, indoor planar slot was used to intensify fry breeding, feeding egg yolk, soya⁃bean milk, and shrimp feed. When 10-15 d fry were put into the pond, their survival rate was more than 85%.%报道了卡拉白鱼全人工繁殖技术要点，即后备亲鱼培育、人工催产、产卵和鱼苗孵化的关键技术。采用鱼类催产药物促黄体释放激素类似物（ LRH－A24μg／kg）、马来酸地欧酮（ DOM 2 mg／kg）和绒毛膜促性腺激素（ HCG 0�12 mg／kg），三者混合注射亲鱼，进行人工催产，采用自然受精或人工干法受精，孵化桶流水孵化等方式，卡拉白鱼受精率达97％，鱼苗孵化率83�60％。简述了仔鱼、苗种培育及池塘养殖技术。鱼苗生长阶段采用室内平面槽强化培育仔鱼，投喂蛋黄、豆浆和虾苗饲料，仔鱼10～15 d下塘，结果表明：苗种成活率＞85％。