【摘要】 分别用不同盐度梯度海水对双棘黄姑鱼仔鱼进行饲养试验.结果表明:盐度为17.0、22.0、27.0、31.0~33.0的4个试验组仔鱼的不投饵存活系数分别为5.38、7.35、6.46、6.18;各盐度组仔稚鱼的生长速度没有显著差异(P>0.05),各组仔鱼经25d的培养,其平均全长为18.8~19.2mm;盐度22.0及27.0的海水中仔稚鱼呈较高的存活率,各盐度组的平均存活率为36.0%、48.5%、46.7%和39.2%.更多还原

【Abstract】 The effects of seawater salinity on survival activity index and growth of larvae and juvenile of Nibea diacanthus were studied.The results showed that under salinity 17.0,22.0,27.0 and 32.033.0,survival activity indices were 5.38,7.35,6.46 and 6.18 respectively for the larvae in 4 experimental groups;no significant differences occurred among them. After 25d of cultivation,the total length of the larvae in each group was averaged 18.819.2mm(P>0.05) with higher survival rates at salinity 22.0 and 27.0. Under salinity 17.0,22.0,27.0 and 32.033.0,the mean survival rates was 36.0%,48.5%,46.7% and 39.2% respectively.更多还原