摘要
花[鱼骨]适应性强,生长迅速,肉味腴美,食性和栖息水层与主要养殖鱼类不同,所以增、移殖该鱼对发挥水体生产潜力具积极作用。武昌南湖花(鱼骨)的生长特性:体长与鳞径关系为L=3.810S^(1.1277)。体长与体重关系为W=4.947×10^(-3)L^(3.4158)。生长指标跳跃性下降时的年龄落在性成熟后。Brody-Bertalanffy生长方程中的主要生物学参数为L_(∞)=33.14cm,W_(∞)=776.1g,K=0.4173,t_(0)=—0.7369,拐点年龄t_(i)=2.20龄,拐点体重W_(i)=236.8g。这是鱼类体重生长的转折点,可作为合理捕捞的依据。
738 specimens of spotted-carp(Hemibarbus maculatus Bleeker)collected from Nanhu Lake,Wuchang during November 1984 to September 1985,are used for investigating the age and growth.The relationship between body length and scale radius is shown by the equation:L=aS^(b)which is found to be the best suitable for the purpose.The weight-length relationship can be expressed by the power function equation W=0.004947 L^(3.5418).The relationship between the body weight,body length and age can be predicated by-following equations separately:■the coordination of the inflexion point is at t_(i)=2.20,W_(i)=236.8 corresponding to 0.302 W_(∞).A discussion on the rational exploitation of the stock in order to maintain a sustaining fisheries in the lake is made.
作者
谢从新
龚世园
杨治国
张其林
Xie Congxin;Gong Shiyuan;Yang Zhiguo;Zhang Qilin(Huazhong Agricultural University,Wuhan)
出处
《海洋与湖沼》
1988年第3期225-231,共7页
Oceanologia Et Limnologia Sinica
