文章摘要
吴万荣.布氏哲罗鲑年龄与生长的初步研究[J].水产学报,1987,11(1):37~44
布氏哲罗鲑年龄与生长的初步研究
ON THE AGE AND GROWTH OF HUCHO BLEEKERI KIMURA
  
DOI:
中文关键词: 布氏哲罗蛙  年龄  生长  鳞片环纹
英文关键词: Hucho bleekeri Kimura  Age  Growth  Ring lines of fish scale
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作者单位
吴万荣 四川省芦山县水利电力局 
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中文摘要:
      本文根据鳞片生长环纹的计数,并同鳞片、脊椎骨、鳃盖骨等上的年轮相对照,对4龄内的布氏哲罗娃的年龄与生长进行了研究。其结果摘要如下:(1)布氏哲罗鲑鳞片上的环纹随年龄而变化:每月长出二圈生长环线。鳞片上具有明显的“切割”年轮特征;脊椎骨、鳃盖骨上具有明带与暗带(线)形成的年龄特征。(2)布氏哲罗鲑在4龄内,体长在年龄上的回归方程为L=189.9468t+26.7934(r=0.991,df=35);体重年龄的回归方程为W=6.2451.e21219t(r=0.978,df=35);鳞片半径与年龄的回归方程为R=0.7425t—0.1596(r=0.980,df=35);体重和体长的回归方程为W=6.7717357×10-6L3.0740r=0.999,df=35);体长与鳞片半径的回归方程为L=251.0540R+71.2288(r=0.991,df=35)。(3)布氏哲罗鲑在4龄内,体长平均年增长为189.95mm;并随年龄增大而下降;生长常数、生长指标、肥满度系数等随年龄增大而增大。
英文摘要:
      By calculating the growth lines on the scales and comparing themwith the annual rings on the scales, vertebrae and opercula, studies on the age andgrowth of Hucho bleekeri Kimura had been conducted in recent four years. Theresults indicate:1) The growth lines on the scales of the fish vary along with its ages.Two cirles of growth line grow each month on an average. Moreover, there are clear‘cutting' characterisitcs of annual ring on the scales, and also the age characteristicsare formed by open lines and hidden lines on the vertebrae and opercula.2) Withinfour years, the regression equation of its body length (L) based on the age (t) is:L=189.9468t+26.6934(r=0.991,df=35);the regression equation of the bodyweight(W)based on the age(t) is W=6.2451e2.1219t)(r=0.987,df=35);the regressionequation of the radius(R)of the scales based on the age (t)is: R=0.7425t-0.1596 (r=0.980, df=35);the regression equation of the body weight(W)based on thebody length (L) is: W=6.7717357×10-6L3.0740(r=0.999,df=35);the regressionequation of the body length (L)based on the radius(R)of the scalesis: L=251.0540+71.2288(r=0.991,df=35). 3) Within fouy your years, the average of body lengthincreases 189.95mm/year. The yearly increment ratio decreases with the age incre-ment, while the growth constant, the growth index and the coefficient of fatteningcondition increase with the age increment
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