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出 处:《上海水产大学学报》2007年第6期555-559,共5页Journal of Shanghai Fisheries University
基 金:广西科学基金资助项目(0342006-2);广西水产畜牧局种苗攻关项目(桂:鱼牧[2001]64号)
摘 要:使用广西水产研究所池塘人工驯化饲育3年的天然三角鲤亲鱼1676尾,采用经筛选的鱼类敏感药物(PG、LHRH-A2、HCG)单一或混合催产的方法,在2002—2005年,先后进行了10批共600组的三角鲤人工繁殖试验。收集受精卵795.5万粒,在水温20.0~28.5℃条件下,利用环道池孵化出鱼苗680.9万尾,平均孵化率为85.6%。并使用光学显微镜观察了自受精卵至鱼苗破膜而出的发育全过程,拍摄了各个阶段胚胎发育图谱。培育出2.5cm以上鱼种631.7万尾,平均成活率达92.8%。In this study, 1676 parent fish of Cyprinus multitaeniata were selected out and used for artificial reproduction after being raised for 3 years and becoming matured. 3 kinds of oxytocics were proved to be efficient and sensitive for spawning induction, which are PG, LHRH - A2 and HCG, and can be used singly or jointly. From 2002 to 2005, a total number of 10 batches,600 groups of Cyprinus multitaeniata parent fishes were used for this study. 7. 955× 10^6 eggs were obtained and 6. 809 × 10^6 fries were hatched out in circular hatchery ponds at water temperature of 20.0 - 28.5 ℃, and the average hatching rate approached 85.6%. 6 317 × 10^6 fingerlings with size of 2.5 cm beyond were raised and produced, and the average survival rate approached 92.8%. Moreover, the developmental stages from fertilized egg to fry were observed with optical microscope, and 16 pictures of embryo development in different stages were taken.
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