嵊泗人工鱼礁区三线舌鳎生长特征与资源评估

The Growth Characteristics and Resource Assessment of Three Line Tonguefishes(Cynoglossus trigrammus Gunther)in Artificial Reef Area of Shengsi

根据2004-2006年浙江嵊泗人工鱼礁海域三线舌鳎的现场调查数据,分析了三线舌鳎的体重组成和体长组成,求解出了三线舌鳎的体长、体重关系式和体长、体重生长方程,计算了体重生长的拐点年龄、临界年龄和总瞬时死亡率,估算了浙江嵊泗海域三线舌鳎的资源量。结果表明:体重与体长关系为W=7.1×10-6L2.9562,体长生长方程为Lt=290×[1-e-0.37(t+0.39)],体重生长方程为Wt=135.1×[1-e-0.37(t+0.39)]2.9562,三线舌鳎体重生长的拐点年龄为2.54龄,临界年龄是2.90龄,浙江嵊泗人工鱼礁海域三线舌鳎的资源生物量为25.26t。

On the basis of investigated data during 2004-2006 in Shengsi artificial reef area in Zhejiang province, the body length composition and weight composition of three line tonguefishes （Cynoglossus trigrammus Gunther） were analyzed.The length--weight formula, The growth equation, and the biomass of the population in artificial reef area are worked out by using FISAT I1 soft.The weigh on the inflexion age and critical age are calculated.The result are as following： The length--weight formula is W=7.1 × 10-6L29562; the length growth equation is Lη=290× [ 1-e-0.37（t＋0.39） ] ;the weight growth equation isW,= 135.1× [ 1-e-0.37（t＋0.39） ]2.9562; the weigh on the in_flexion age and critical age are re- spectively 2.54a and 2.90a; the biomass of three line tonguefishes is 25.26t.