摘要
对五岳水库青梢红鲌的生物学规律进行了初步研究。结果如下:(1)肠道充塞度0～3级比例依次为18%、54%、16%、12%,未发现有达到4级和5级的;(2)雌雄性比为1∶1.6;(3)性成熟系数为1.02(雌)和0.70(雄);(4)体重与体长的回归关系式为:W=0.0180×L2.8998(R2=0.9410);(5)体长和鳞径的关系式为Y=8.0478+0.4770X(R2=0.6226);(6)1～4龄肥满度分别为1.451、1.420、1.489、1.494,平均为1.433;(7)体长与年龄的vonBertalanffy方程为:Lt=20.380×[1-e-0.5600(t+1.034)](R2=0.9995),体重与年龄的方程为:Wt=112.643×[1-e-0.5600(t+1.034)]3(R2=0.9996),拐点年龄为2.588龄。
We carry on studying Erythroculter dabryi for showing four aspects. Firstly, Erythroculter fish is more and more welcomed by many consumers. Secondly, the study on Erythroculter dabryi is more lack in three Erythroculter fish （Erythroculter mongolia, Erythroculter dabryi and Erythroculter ilishaeformis）. Thirdly, in fresh water ecosystem, Erythroculter dabryi have its irreplaceable ecological niche. At last, this study may provide important data of sustainable exploiture. This study use traditional research method and indicate following several results ：①The degrees of intestinal tract fullness of Erythroculter dabryi are 18% , 54% , 16% and 12% in range from 0 to 3 grades respectively, and there is no fish whose get to grade 4 and 5. ②Sex ratio（ ♂ ：♀ ） is 1： 1.6. ③Mean GSI are 1.02（ 9 ） and 0.70 （ 6 ） respectively.④The regression formula between body weight and length is W =0. 0180× Lzs998,（R2 = 0. 9410）. ⑤The regression formula between body length and scale radium of is Y = 8.0478 ＋ 0. 4770X,（R2 =0. 6226）. ⑥Mean body fullness is 1. 433, and those of age from 1 -4 are respectively 1. 451、 1. 420、1. 489、1. 494. ⑦von Bertalanffy regression formula between body length and age is L t= 20. 380 ×[ 1 - e ^-0.5600（t＋3.034） ], （R^2 = 0. 9995）, and yon Bertalanffy regression formula between body weight and age is Wt = 112. 643× [ 1 - e ^-0.5600（t＋3.034） ] ^3, （R2 = 0. 9996）. Its age at turning point is 2. 588 years
出处
《水生态学杂志》
北大核心
2009年第5期75-79,共5页
Journal of Hydroecology
关键词
青梢红鲌
生物学
五岳水库
Erythroculter dabryi
Biology
Wuyue reservoir
