RELATIONSHIP ANALYSIS BETWEEN MORPHOMETRIC ATTRIBUTES AND BODY WEIGHT OF NIBEA COIBOR IN ARAFURA SEA OF INDONESIA
In order to study the effects of morphometric characters on the body weight in Nibea coibor, 1176 individuals were randomly sampled including 600 female and 576 male. The attributes measured in this study include body length (Xi), trunk length (X2), caudal (X3)? Head length (X4), body high (X5), maximum body circumference (X8)? And body weight (Y). The correlation coefficients between every two metric traits were constructed by correlation analysis. The paths and determination coefficients in which the body lengths were used as the dependent variable and other attributes were used as independent variables were calculated by path analysis. The results showed that the correlation coefficients of each morphological trait to body weight were all at extremely significant level (P<0. 01) in female and male Nibea coibor. The path coefficients of body length* maximum body circumference? Body high, caudal length and trunk lengths to body weight all reach at extremely significant level (P<0. 01) in female Nibea coibor and the path coefficients of body lengths, maximum body circumference, head length, caudal length and trunk length to body weight all reach at extremely significant level (P<0. 01) in male Nibea coibor. The analysis results of determination coefficients show that the body length and maximum body circumference are the most important determination morphological traits to body weight in female Nibea coibor, the maximum body circumference and trunk length are the most important determination morphological traits to body weight in male Nibea coibor. The multiple regression equation was established by multiple analyses after eliminated the morphological traits on body weight which are not significant.