对不同日龄(1日龄、7日龄、15日龄)的日本无针乌贼在不同盐度(10、15、20、25、30、35、40)条件下的生长及存活状况进行了研究.结果表明,各日龄组日本无针乌贼的存活率及增重率均随盐度的升高而升高,但当盐度超过一定值后,其存活率及增重率随盐度的升高而降低.日本无针乌贼的适宜盐度范围为20～30,不同日龄乌贼幼体的适宜盐度范围略有不同,其中15日龄幼体对盐度的耐受性要优于1日龄及7日龄乌贼幼体.乌贼幼体的最适盐度约为25,其生长和存活均较高.%The weight gain rate (WGR) and survival rate (SR) of Sepiella japonica larvae (1, 7 and 15 days old) at different salinities (10, 15, 20, 25, 30, 35, and 40) were studied. The results showed that the SR and WGR of Sepiella japonica larvae increased with the salinity went up simultaneously as the salinity between 10 and 25, but when the salinity exceeded a certain point, the SR and WGR went down as the salinity increased. The range of optimum salinity was between 20 and 30, but there were some difference between the 1, 7, 15 age olds. The salinity tolerability of 15-day olds cuttlefish larvae was better than the 1-day olds and 7-day olds. The best salinity of Sepiella japonica larvae was around 25, with highest growth rate and survival rate.
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