论文部分内容阅读
本文系斜带髭鲷鱼苗室外水泥池不同生态系的育苗试验.在育苗前的“养水”期 间,1号池接入小球藻、微绿球藻、扁藻、金藻、轮虫、桡足类、枝角类等生物饵料;2号 池仅接入小球藻、轮虫生物饵料.在水温19.1~23℃、比重1.019、pH值8.5的条件 下.2池鱼苗经100d的培育后,平均全长各为31mm和29mm,平均体重各为0.90g 和0.75g,成活率18.5%和10.1%.试验表明:在育苗前期,生物饵料的多样性有利于 开口仔鱼的摄食和营养,也利于鱼苗的生长发育和成活率的提高.
This article is the Department of nursery experiments of different ecosystems of incline tapefly seabream fry outdoor cement pool. In the pre-nursery “water” period, access to pool 1 Chlorella, Micro-Chlorococcum, Platymonas, Chrysophyta, rotifers, copepods, cladocerans and other biological feed; pool 2 access Chlorella, rotifers biological bait. In the water temperature 19.1 ~ 23 ℃, the proportion of 1.019, pH 8.5 conditions. 2 The pond fry after breeding for 100d, the average length of each 31mm and 29mm, the average weight of each 0.90g and 0.75g, the survival rate of 18.5% and 10.1%. Experiments show that: in the early nursery stage, the diversity of biological feed is conducive to the opening of larvae feeding and nutrition, but also conducive to the growth of fry growth and survival rate.