摘要
鉴定和描述了驼背鲈鳞片的年龄及其年轮特征,采用4种生长模型来模拟其体长生长过程,通过比较分析得出最适的生长方程,并对其生长拐点以及生长指标等生长特征进行了相应分析。实验结果表明,驼背鲈鳞片的年轮特征主要表现为疏密型,偶见副轮和生殖轮。vonBertalanffy生长方程、Gompertz生长方程、Log istic生长方程以及三项式方程均可反映驼背鲈的体长生长过程,其生长特点属于均匀生长类型,其中Gompertz生长方程能更好地描述10龄以前的体长生长性状。体长体重的von Bertalanffy生长方程为:Lt=566.0139[1-e-0.1549(t+1.0988)];Wt=4531.0076[1-e-0.1641(t+0.76635)]3.0245。体长与体重关系为Wt=2.3×10-5Lt3.0245。渐近体长L∞=566.0139 mm,渐近体重W∞=4531.0076 g,体重生长拐点tr=5.98龄,此时的体长与体重分别为376.94 mm和1 346.26 g。
Scales were used for the age determination of high-finned grouper （Cromileptes altivelis）. The relationships between body length and age were described by four growth models in order to find out the best one. The results showed that the annual-ring feature belongs to the loose-close. The false ring and spawning check can be seen occasionally. According to the scale radius, body length and body weight, the growth condition of C. altivelis was analyzed. The radius of scale was linearly and directly correlative to body length. The relationship between body length （L） and body weight （W） was expressed as Wt, =2.3 × 10^-5 Lt^3.0245. Four growth functions provided a high fitness and preferably described the growth of C. altivelis. Among them, the Gomperz growth function was especially suited to describe the growth patterns of under 10 years fish. The growth of body length and body weight can be described by the von Bertalanffy growth equation Lt = 566. 0139 [ 1 - e^ -0.1549（t＋ 1.0988） ] ; Wt = 4531. 0076 [ 1 - e ^-0.1641（t＋0,76635）] 3.0245 The age of 5.98 years was the mining point of body growth with body weight 1346.26 g. The fish grew faster before the age of 6.
出处
《水产学报》
CAS
CSCD
北大核心
2007年第5期624-632,共9页
Journal of Fisheries of China
基金
广东省科技计划项目(C20817)
广东省重大科技兴海项目
中国水产科学研究院基金项目(2002-3-1)
关键词
驼背鲈
年龄
生长特征
生长方程
Cromileptes altivelis
age
growth characteristics
growth function
