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１材料和方法真鲷受精卵取自中国科学院海洋研究所石老人养殖基地的真鲷亲鱼培养地。用筛绢将刚受精尚未卵裂的受精卵滤出，选择发育正常的作为实验材料备用。不同盐度的海水通过向天然海水（盐度为３３）中添加无氯自来水和ＮａＣ１来配制。全部海水经过滤净化。各组实验中对
1 Materials and methods The red sea bream oosperm taken from the Chinese Academy of Sciences Institute of stonefish breeding base of sea bream broodstock culture. Screen silkworm just fertilized cleavage of the fertilized egg is not filtered, select the normal development as an experimental material spare. Saltwater at different salinities is formulated by adding chlorine-free tap water and NaC1 to natural seawater (salinity 33). All seawater is filtered and purified. In each group of experiments