杂交鲆(牙鲆♀×夏鲆♂)网箱养殖技术研究

Study on cage culture technology of hybrid flounder(Paralichthys olivaceus♀×Paralichthys dentatus♂)

引进杂交鲆苗种在宁德市三都海区,经过385d的网箱养殖,达到商品规格,平均全长36.3 cm,平均体重606g,成活率达71%,饵料系数为8.3。研究表明,杂交鲆在生长速度、抗逆性、适应性等方面有较明显的优越性,能适应闽东海域夏季高温和冬季持续的低温。以Keys氏公式W=aLb,拟合养殖13个月杂交鲆的平均全长L(cm)与平均体重W(g)的关系式为:y=0.0117x3.0153,(R2=0.9905),其中b≈3,即此生长阶段的网箱养殖杂交鲆生长均匀。其平均全长与平均体宽成线性正比关系,y=2.6011x+0.7979,(R2=0.9764)。

Hybrid flounder（Paralichthys olivaceus♀×Paralichthys dentatus♂） was introduced in Sandu sea area,Ningde,and rearched the commercial fish standard after 385 days cage culture.The average total body length was 363mm,the average total weight was 606g,and the survival rate was 71%,the feed coefficient was 8.3.Hybrid flounder was greatly improved in growth rate and stress resistance,and could adapt to high temperature in summer and cold temperature in winter in East Fujian sea area.According to Keys formula W=aLb,the average total body length and the average total weight of hybrid flounder cultured for 13 months in cage was as follows： y=0.0117x3.0153,（R2=0.9905）,Where b≈3,hybrid flounder showed isometry growth,The line correlation between the average total body length and the average body width was y=2.6011x ＋ 0.7979,（R2=0.9764）.