微生态制剂对提高漠斑牙鲆育苗成活率的作用

对漠斑牙鲆育苗过程中添加微生态制剂以提高育苗成活率进行了比对实验。结果表明:采用育苗水体中添加微生态制剂的方法,能明显提高漠斑牙鲆育苗的成活率,改善水质,降低育苗用水量约30%~40%。在初孵仔鱼1×104ind/m3密度的条件下,添加微生态制剂的育苗池中不同阶段的仔稚鱼成活率高于对照组5%~10%;但随密度增加至2×104ind/m3时,实验组和对照组相互殘杀增加,仔稚鱼成活率都呈下降趋势;密度增加至3×104ind/m3时,实验组与对照组之间差异不显著(P<0.05)。

The role of microecological modulator in the improvement of seed rearing survival rate of southern flounder Paralichthys lethostigma

Comparative experiments were made on the process of seed rearing of southern flounder Paralichthys lethostigma by adding microecological modulator to improve the seed rearing survival rate.The results showed that seed rearing survival rates and water quality could significantly improve and the use of water volume could be reduced by about 30%-40%.Under the conditions of newly hatched larval density of 1×104·m-3and adding microecological modulator to the seed rearing ponds,the survival rates of larval and juvenile fish at different growth states were higher than control group by 5%-10%.But when the density increased to 3×104·m-3,the differences between the experimental group and control group were insignificant(P<0.05).