江苏省农林厅有关部门研制成功了形体呈螺旋状的微藻作为蟹苗开口饵料，解决了河蟹育苗的饵料成本高、育苗成活率低的问题。经启东沿海的蟹苗养殖户比较试验表明，使用“赐百年”螺旋藻开口饵料的蟹苗成活率提高１５　％、幼体变态率提高８　％、扣蟹回捕率提高１０　％以上， Jiangsu Provincial Department of Agriculture and Forestry Department successfully developed a helical shape of micro-algae as a crab opening bait, to solve the crab breeding high cost of bait, seedling survival rate is low. The comparative experiments on crab farmer in Qidong coastal area showed that the survival rate of crabs fed with spirulina which gave “a hundred years” spirulina was increased by 15%, the rate of metamorphosis of larvae increased by 8% and the recovery rate of crabs increased by more than 10%