| 摘要: |
| 对宁德地区网箱养殖大黄鱼(Pseudosciaena crocea)生长特性进行了研究。测定了780 尾大黄鱼25 个月龄的各项生长数据, 体长变幅为20.5～320.0 mm, 体质量变动范围为0.281～555.5 g; 生长指标显示, 体长生长指标为0.208～2.123, 体质量生长指标为0.529～47.579; 肥满度波动范围为1.74%～2.37%;肝指数变动范围为0.92%～2.07%; 鳔生长指数为1.08%～1.85%; 雌鱼性腺成熟系数为0～10.04%, 而雄鱼则为0～2.27%。以Keys 氏公式W=aLb, 拟合25 月龄养殖大黄鱼的体长(L)与体质量(W)的关系式为: W=0.0195 L 2.9775(R2=0.9959), 其中b≈3, 即此生长阶段的网箱养殖大黄鱼生长均匀,为等速生长类型;体质量生长呈幂函数生长, 其回归方程为: y=1.8617x1.8099(R2=0.9931)。体长Y(cm)与养殖时间X(月龄)的生长呈二次多项式关系, 其回归方程为: y=-0.0259x2+1.7125x+4.1534 (R2=0.989)。 |
| 关键词: 大黄鱼(Pseudosciaena crocea) 网箱养殖 生长特性 |
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| 基金项目:国家星火计划项目(2008GA720009); 福建省区域重大项目(2009N3021) |
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| Study on growth characters of cultured Pseudosciaena crocea originated from Eastern Fujian |
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| Abstract: |
| The growth parameters for Pseudosciaena crocea of Eastern Fujian stock were measured in 780 individuals in 25 months. Range of the body length or body weight was 20.5-320.0mm or 0.281-555.5g, respectively. The varations of growth indexes for length, weight and fatness in 25 months were 0.208～2.123, 0.529～47.579, and 1.74%～2.37%, respectively. Moreover, we found that the index of liver varied from 0.92% to 2.07%, swim bladder weight 1.08% to 1.85%, and gonadosomatic 0 to 10.04% (male: 0～2.27%, female: 0～10.04%). Besides, on the aspect of growth type, we collected the 25 months data and fitted the length and weight by Keys equation (W=aLb). The equation [W=0.0195 L 2.9775(R2=0.9959), b≈3] showed the growth of length fit to the constant speed type. The growth of weight of individuals was power type [y=1.8617x1.8099(R2=0.9931)]. Regression equation of quadratic polynomial [y=-0.0259x2+1.7125x+4.1534 (R2=0.989] was the relationship between the length (Y) and month (X). This study provided fundamental growth data of the cage culture P.crocea for healthy breeding and sustainable development. |
| Key words: Pseudosciaena crocea cage culture growth characters |
