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大连紫海胆幼海胆期的食性开始由摄食单一的底栖硅藻变为多样化,对某些柔嫩的大型海藻(石莼,海带、裙带菜、江蓠)鱼虾贝肉等有机碎片以及人工配合饲料均表现出一定的嗜食性。幼海胆不但对不同种饵料的摄食率有差别,而且不同种饵料对幼海胆的饵料效果也有所不同,其中以海带和裙带菜的效果最好,幼海胆对其的摄食率分别为红藻、石莼、动物性蛋白饵料的1.2～2.3倍,而其饵料效率也分别为红藻,石莼等的1.1～1.4倍。幼海胆可摄食人工配合饲料将为其工厂化人工育苗开辟新的饵料来源。
The feeding habits of purple sea urchin in early juvenile sea urchin began to change from feeding single benthic diatoms to diversified organic fragments such as flesh and shellfish of some soft and large seaweed (seaweed, seaweed, wakame, jianpi) and artificial Feed showed a certain diet addictive. Young sea urchins not only different feeding rates of different species of food, and different kinds of feed on young sea urchin feeding effect is also different, of which the best kelp and wakame results, young sea urchin feeding rates were red algae, Lithocarpus, animal protein bait 1.2 to 2.3 times, and its feed efficiency were also red algae, stone, etc. 1.1 to 1.4 times. Young sea urchin can feed on artificial feed will be its artificial plantation breeding new sources of food.