中文摘要：

2007—2010年,对滇池金线鲃（Sinocyclocheilus grahami）进行了亲鱼培育、繁殖力和卵径（egg diameter,ED）大小的研究。滇池金线鲃的催产率、核偏位率和孵化率分别由2007年的25.2%、61.5%和30.4%到2010年的91.3%、85.2%和44.5%。四年间这3项指标均有不同程度提高,其中,催产率提高的幅度最大。提供适合滇池金线鲃营养全面的饵料可以保证亲鱼培育的最佳效果,获得高质量的鱼卵和鱼苗。滇池金线鲃绝对怀卵量与体长的关系是F=0.0004826SL3.166（R2=0.6424,P〈0.05）。四年来滇池金线鲃的平均产卵量为（2118.4±899.1）粒,平均绝对怀卵量为（2402.9±881.9）粒,平均相对怀卵量为（70.4±20.8）粒。产卵量、绝对怀卵量和相对怀卵量都有随着体长增加而增加的趋势。卵的大小与胚胎存活相关,在胚胎发育的前两天,不同批次胚胎的死亡呈现一种稳定的或低的死亡率;而后5～7d不同大小的卵呈现不同的死亡率,即小的卵具有更高的死亡率;而卵径〉2.0mm的胚胎死亡率趋于稳定;大的卵有更高的生存潜力,能保证仔鱼开口前继续完善身体器官的形成或发生所需要的能量。

英文摘要：

Broodstock management,fecundity and egg size of the golden-line barbel Sinocyclocheilus grahami were studied from 2007 to 2010.The induced spawning success of female S.grahami was 25.2% in 2007 and dramatically increased to 91.3% in 2010.The nucleus deviation rate and hatching success were 61.5% and 30.4%,respectively,in 2007 and increased to 85.2% and 44.5%,respectively,in 2010.Providing nutritious food for broodstocks of S.grahami can ensure optimum breeding conditions as well as high-quality eggs and fingerlings.There also seems to be a relationship between absolute fecundity （F） and standard length （SL）,as described by the power-exponent function F=0.0004826SL 3.166 （R 2 =0.6424,P0.05）.The average of number of spawn egg was 2118.4±899.1 from 2007 to 2010,the average of absolute fecundity was 2402.9±881.9 from 2007 to 2010,and the average of relative fecundity was 70.4 ±20.8 from 2007 to 2010.The number of spawn egg,absolute fecundity and relative fecundity increased in individuals with a longer body length.Additionally,egg size contributed to the survival rate of embryos.The different batches reached an asymptotic,low or stable embryonic mortality during the first two days;the balance was broken in the subsequent seven days,as high embryonic mortality was observed in smaller eggs.The mortality of embryos from eggs larger than 2.0 mm was,contrastingly,rather stable.Embryos from bigger eggs have stronger survival potential,as bigger eggs can provide more energy and thus,a more favorable environment for early development.