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本文研究了泥河水库鲢鳙鱼的生长规律 ,根据莱亚的鱼体长和鳞长的关系式Ln/L =Sn/S分别推算出鲢鱼和鳙鱼的生长速度体长增长值 ;并计算出泥河水库鲢鳙鱼的体长与体重的关系、肥满度和生长方程。体长和体重的关系式分别为 :鲢鱼W =0 4 133L2 2 0 11,鳙鱼W =0 0 2 395L2 94 4 4;肥满度分别为 :鲢鱼K =1 779,鳙鱼K =1 936;生长方程分别为 :鲢鱼 :Lt=12 6 87〔1-e- 0 0 963(t+0 1566) 〕Wt=4 60 2 1〔1-e- 0 0 989(t- 1 12 93) 〕3鳙鱼 :Lt=149 36〔1-e- 0 0 912 (t+0 2 355) 〕Wt=96530〔1-e- 0 0 792 (t- 0 2 532 ) 〕3
In this paper, the growth rules of silver carp and bighead carp in the Nihe Reservoir were studied. According to the relation of Ln / L = Sn / S, the body growth of silver carp and bighead carp were calculated respectively. The relationship between body length and body weight of silver carp and bighead carp in the Nihe Reservoir was calculated, and the fatness and growth equation were calculated. The relationship between body length and body weight were as follows: silver carp W = 0 4 133L2 2 0 11, black carp W = 0 0 2 395L2 94 4 4; fatness were respectively: silver carp K = 1 779, 1 936; the growth equations are: silver carp: Lt = 12 6 87 [1-e-0 0 963 (t + 0 1566)] Wt = 4 60 2 1 [1-e- 0 0 989 (t- 1 12 93)] 3 Catfish: Lt = 149 36 [1-e-0 0 912 (t + 0 2 355)] Wt = 96530 [1-e- 0 0 792 (t-0 2 532)] 3