| To study the relationship of morphological characters and body weight of Hephaestus fuliginosush, phenotype form measurement was taken on 63 samples in Guangzhou Panyu Institute of Agricultural Sciences, Guangdong, China. The morphological index used in this study included total length, body length, body depth, body width, mouth, head length, head height, snout length,diameter of eye, the eye spacing, head length behind the eyes, length of trunk, height of caudal peduncle, length of caudal peduncle and body weight. Using the correlation analysis and path analysis method, we calculated the determination coefficient, path coefficient and complex related index, taking morphological characters as independent variables, weight as dependent variable. The results showed that all the correlation coefficient of each independent variable and body weight of H. fuliginosush were highly significant. Head height, body thickness, height of caudal peduncle and length of trunk were the main characteristics affected body weight of H. fuliginosush, in which the head height had a major direct effect (P2=0.360) on body weight. The correlation index of the 4 traits to body weight was 0.915. The multiple regression equation relating the body weight was established as y=-432.346+40.705x1+25.396x2+55.718x3+28.862x4, in which y was body weight, x1, x2, x3, x4 were the head height, length of trunk, height of caudal peduncle, body width, respectively. These results provided a theoretical basis to the broodstock of H. fuliginosush. |
