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以光棘球海胆为母本,中间球海胆为父本进行杂交试验及苗种培育。试验结果表明,通过筛选同时得到自然成熟的父母本精、卵,在比正常海胆自交精子量高40倍以上的精子作用下,杂交受精率为2.5%。在适宜的水温、光照及饵料等的培养条件下,杂交海胆能够生长附着变态,变态时间与母本相近。培育出的杂交海胆外部颜色及棘色、棘长介于两亲本之间。杂交海胆经过6~7个月的中间暂养,出苗量为0.6×104个/m3,个体壳径3~30 mm,平均壳径8.8 mm。
Echinochloa crusgalli as the female parent, the middle ball sea urchin as the male parent hybrid test and seed culture. The results showed that the fertilization rate of 2.5% was achieved when sperm were obtained from the natural mature parents and eggs by screening more than 40 times higher than normal sea urchin selfed sperm. Under suitable conditions of water temperature, light and food, hybrid sea urchins can grow and attach with metamorphosis, and the metamorphosis time is similar to that of female parent. Breeding of the hybrid sea urchin external color and color, spine length between the parents. Hybrid sea urchins after six to seven months in the middle of holding, the emergence of 0.6 × 104 / m3, individual shell diameter of 3 ~ 30 mm, the average shell diameter of 8.8 mm.