卡特拉鱼形态、食性和生长的研究  

STUDIES ON THE MORPHOLOGY,FEEDING HABIT AND GROWTH OF CATLA CATLA

作　　者：谢刚[1] 范阳[1] 杨红波[1] 祁宝伦[1] 

机构地区：[1]珠江水产研究所,广州510380

出　　处：《水生生物学报》1993年第1期66-74,共9页Acta Hydrobiologica Sinica

摘　　要：观测卡特拉鱼的形态特征和1—3龄鱼主要可量性状及其比例的变动。1—3龄鱼除主食商品饲料外,同时也食较大比例的浮游生物。着重对浮游生物的种类和比例进行了分析。肠长与体长呈直线相关。Y=6.38X-89.95。1—4龄鱼体长和体重相对生长率和生长指标都随年龄增加而逐渐下降。体长与体重呈曲线相关。W=0.00002261L^(3.0569)。采用 Von.Bertalanffy 生长方程分析其生长特性。方程参数 L_∞=821.2mm,W_∞=19616.6g,t_0=0.6年,K=0.3。体长生长不具拐点,生长速度随年龄增加而递减;体重生长具拐点,其值4.3年。此时体重生长速度达最大值。4、3龄前是生长旺盛期,此后进入生长缓慢期。This paper describes the morphology and changes in the major measurable characters and their ratios in 1—3 year-old Catla carla.1—3 year-old fish feed chiefly on artificial food,they also eat a large part of plankton.The taxes and ratios of plankton have been analy- sed.There existed a linear correlation between intestine length(Y)and body length(X): Y=6.38X-89.95. Relative growth rates and growth index in body length and body weight decreased gra- dually with increases in age over the range of 1—4 years.The relationship between body leng- th(L)and body weight(W)was:W=0.00002261L^(3.0669).The characters of growth were an- alysed using Von.Bertalanffy growth equation.The estimated parameters were:L_∞=821.2 mm;W_∞=19616.6g;t_0=0.6year;k=0.3.There was no turning point in the growth of body length.The growth rate decreased gradually with increased age.In the growth of body weight, a turning point was found at the age of 4.3 years,at which the weight growth rate reached the maximum.The fish exhibited rapid weight growth before the age of 4.3 years;afterwords, weight growth slowed down.

关 键 词：卡特拉鱼 形态 食性 生长 鲤形目 

分 类 号：Q959.468[生物学—动物学]