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EFFECTS OF MORPHOMETRIC ATTRIBUTES ON BODY WEIGHT OF SALVELINUS LEUCOMAENI
Author(s): 
Pages: 554-560
Year: Issue:  3
Journal: Oceanologia et Limnologia Sinica

Keyword:  Salvelinus leucomaenismorphometric traitbody weightpath analysis;
Abstract: Correlation analysis,path analysis,and multiple-variable regression were used to study the effect of morphometric traits of S.leucomaenis of different ages on body weight.The results show that four attributes that relating body weight were maintained in the 1-year group,i.e.,in a descending order,the body height>body length>caudal peduncle length>snout length.The coefficient of the four-attribute-combination to the body weight was high at 0.915,suggesting that the selected attributes were practical.In the 2-year group,body length and body height were kept,of which body length was more decisive.The coefficient of the two-attribute-combination to the body weight was 0.990.In the 3-year group,four attributes were preserved in decisive power and in a descendent order of body height>total body length>body length>snout length,and the correlation of four-attribute-combination to the body weight was 0.936.In addition,using body weight as independent variables(y),and the morphometric attributes(x) as dependent variables,multiple-variable regression equations were built up,with which difference among these three age groups were studied.The method provides a theoretical basis for S.leucomaenis breeding and may be applied in the culture.
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