论文部分内容阅读
在水温 2 3.0～ 2 8.0℃ ,盐度 2 0 .8～ 2 3.5,p H 8.0～ 8.1的条件下 ,大弹涂鱼受精卵经 96 h胚胎发育后开始孵出仔鱼 ,孵化时间延长至 16 8h.人工授精卵在筛绢网片上的平均孵化率为 4 .2～2 0 .5% ;在塑料桶内的平均孵化率为 36 .3%～ 70 .6 % .陶瓷管道受精卵在孵化网箱内的平均孵化率为 5.9%～ 2 5.2 % ,在塑料桶内的平均孵化率为 33.6 %～ 76 .3% .共孵出仔鱼 194 94 7尾 .在孵化网箱和塑料桶中添加青霉素可抑制菌类的繁生 .保持水质新鲜 ,加大充气量 ,使孵化水体处于运动状态有利于提高塑料桶内受精卵的孵化率 .还讨论了受精卵孵化率高低差别的原因
Under the conditions of water temperature of 3.0-3.8 ℃, salinity of 2.08-2.55, p H 8.0-8.1, the larvae hatched larvae after 96 h embryos development and the hatching time was prolonged to 16 8 h. The average hatching rate of artificial insemination eggs on silk mesh was 4.2 ~ 2.05%, and the average hatching rate in plastic buckets was 36.3% ~ 70.6% The average hatching rate was 5.9% -2.22%, and the average hatching rate in plastic buckets was 33.6% ~ 76.3% .A total of 194 94 7 larvae were hatched.Apenicillin could be added in hatching cages and plastic buckets Inhibit the growth of fungi to maintain fresh water, increase the amount of inflatable, so hatching the water in motion is conducive to raising the hatch rate of fertilized eggs in plastic barrel also discussed the difference between fertilized egg hatching rate reasons