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2000-2001年对新丰江水库太湖新银鱼进行逐月采样,用各月龄体长、体重均值研究了该鱼的生长特性。体长体重的关系为 W=0.002L~(3.2813);用 von Bertalanffy 生长方程表达其体长、体重与月龄的关系:L=8.80[1-e~(0.2172(1-0.1250)],W_t=2.45[1-e~(0.2172(t-0.1250)]~3。体重生长拐点为5.18月龄,拐点的体长为5.86cm,体重为0.65g。考虑拐点后体重月增长量仍保持稳定,故捕捞期应在拐点后至产卵前的秋冬季。
From 2000 to 2001, the freshwater fish of Taihu Lake in Xinfengjiang Reservoir was sampled on a monthly basis. The growth characteristics of the fish were studied by the body length and body mass of each month. The relationship between body weight and month age was expressed as von Bertalanffy growth equation: L = 8.80 [1-e ~ (0.2172 (1-0.1250)], W_t = 2.45 [1-e ~ (0.2172 (t-0.1250)] ~ 3. The inflection point of body weight growth is 5.18 months old, body length of inflection point is 5.86cm and body weight is 0.65g. Therefore, the fishing season should be after the inflection point to autumn and winter before spawning.