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池养西伯利亚鲟的人工繁殖试验 被引量:2

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摘要 用浅层地下水和河水的混合水将引进的西伯利亚鲟水花鱼苗在水泥池中培育成8龄性成熟亲鱼。在第一次产卵前3-4个月,以2种不同的降温方式使亲鱼越冬。Ⅰ组17尾雌鱼,17尾雄鱼,水温7-8℃;Ⅱ组19尾雌鱼,20尾雄鱼,水温7-10℃。催产前10-15 d将水温升至16-17℃。经人工催产,Ⅰ组10尾雌鱼排卵,14尾雄鱼排精;Ⅱ组9尾雌鱼排卵,15尾雄鱼排精。雄鱼采用导管法取精,雌鱼切开输卵管手术取卵。试验结果,共获成熟卵19490 m L,计87.17×10^4粒,用半干法授精,获受精卵66.22×10^4粒,受精率17.5%-90.0%;孵出鱼苗39.6×104尾,孵化率20.0%-71.7%。结果表明,西伯利亚鲟在水泥池中经人工饲养、培育能达到性成熟,可用来进行人工繁殖。
出处 《水产科技情报》 2015年第4期202-204,208,共4页 Fisheries Science & Technology Information
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