【摘要】 瓣结鱼全年均可形成新轮 ,新轮出现高峰期为 4月。其生长特点是属于均匀生长类型 ,体长与鳞长呈直线关系 ,体长和体重呈指数关系 ,回归求得Bertalanffy个体生长方程各参数L∝ 、W∝ 、K、T0 分别为 70 4 3、5 96 1 5 0、0 2 2 31、0 0 2 2 4 ,体重生长拐点年龄为 4 95龄 ,该拐点体重为 1 76 8 2 3g ,瓣结鱼第1、2龄生长较为迅速。更多还原

【Abstract】 Three hundred eighty eight were aged by scales for age determination. Tor brevifilis brevifilis produces new annual rings in a single year, with a peak in April. Analyzing the body length, the body weight, and the age of the catched shows that 388 speciment mainly consist of single aged fishes which take Tor brevifilis 63 92% of the whole population, The body length and the scale length were linear correlated; the body length and the weight to be exponential correlated. The growth parametres L, W, K and T have been estimated to be 70 43,5?961 50,0 223?1 and 0 022?4 respectively. The age of 4 95 years Was the turning point of growth with body weight 1?768^23 gram. The fast growing period was in the age of one and two. At this time, thefish produces new annual rings.更多还原