福建沿海杂交鲍育苗技术研究

Study on technology of crossbreeding abalones(Haliotis discus hannai)in the coastal area of Fujian

在同一区域相邻的两个育苗场 ,采用杂交鲍作亲鲍 ,用两种方法进行育苗试验。结果显示 ,南方育苗法工艺简单 ,成本低 ,有效面积附苗量平均为 10 6 .7只 /m2 ,生长速度快 ,后期稚鲍培育成活率达 95 % ,单位面积平均出苗量近 30 0 0只 /m2 ;而北方育苗法工艺较复杂 ,有效面积附苗量平均为370 .6只 /m2 ,剥离后出现大量死亡现象 ,后期培育成活仅为 12 % ,单位面积平均出苗量 4 0 8只 /m2 。

The experiments on breeding abalones with two methods were carried out by using parent abalones of the first filial generation in two neighboring nurseries.The results show that the southern breeding method has features of simple technique,low cost and fast growth rate.Adhering amount averages out 106.7 indi./m 2,final survival rate of young abalone is 95% and average yield of young abalones is nearly 3 000 indi./m 2.The technique of the northern breeding method,however,is rather complicated and adhering amount averages out 370 6 indi./m 2,high mortality rate should occur when they are removed,final survival rate of young abalone is only 12% and average yield of young abalones is 408 indi./m 2.