论文部分内容阅读
报道了在黑泉水库利用水库库底水进行高白鲑发眼卵大规模孵化情况。孵化水温3~8℃,积温达到364.5~469.1℃.d时破膜孵出稚鱼,孵化率为96%。全过程的观察发现,昼夜水温稳定是提高孵化率的主要因素,在破膜前期保持4℃左右低水温对提高孵化率和保证仔鱼质量起关键作用,在积温达到临界值时适当升温会促使发眼卵集中破膜。
The case of large white hatching eggs of high whitefish was reported using the bottom water of reservoir in Heiquan Reservoir. Incubation temperature 3 ~ 8 ℃, accumulated temperature reached 364.5 ~ 469.1 ℃ .D rupture of membrane hatching juveniles, hatching rate of 96%. The whole process of observation found that the stability of day and night temperature is to improve the hatching rate of the main factors in the pre-rupture of the membrane to maintain a low temperature of about 4 ℃ to improve the hatching rate and to ensure the quality of larvae play a key role in the accumulated temperature reaches the critical value of appropriate heating will trigger Eye ova concentrated rupture.