盐度和饲料添加剂对中华绒螯蟹仔蟹成活率的影响

THE EFFECTS OF DIFFERENT SALINITIES AND FEED ADDITIVES ON THE SURVIVAL RATES OF YOUNG CRAB (ERIOCHEIR SINENSIS)

本文研究了不同盐度对中华绒螯蟹大眼幼体培育成仔蟹成活率的影响。在水温21℃、水深20cm，大眼幼体经20天培育，盐度从0－9‰培育成Ⅲ期蟹的成活率以盐度5－7‰为最高。0‰和9‰成活率较低。投喂含有适量添加剂的配合饲料比投喂不含添加剂的对照组成活率稍高。

The present paper deals with the effects of different salinities and feed additives on the survlval rates of young crab (Eriochelr sinensis) during the developing from the stage of megalopa into the young crab (stage llI). The rearing tests of different salinities and feed additlve were carried out 1n aquaria at 21℃ of water temperature, 20 cm of water depth After 2O days rearing,the survival rates were ralative higher in the aquaria with salinities of 5‰, and 7‰, relative lower in the aquaria with salinities of 0‰ and 9‰. The rearing results feeding formulated feed with additives were better than those of feeding formulated feed without additived.