PATH ANALYSIS BETWEEN MORPHOMETRIC TRAITS AND BODY WEIGHT ON HELICE TIENTSINENSIS BY MULTIPLE REGRESSION
To study the relationships of 11 morphological traits with the body weight (Y),140 Helice tientsinensis from Laizhou Bay were sampled.The 11 morphological traits were carapace length (X1),chela moving-finger length (X2),carapace width (X3),interorbital distance (X4),first obital margin width (X5),second orbitai width (X6),length of fixed finger of claw (X7),width of fixed finger of claw (Xs),length meropodit of claw (X9),length of meropodit of first peraeopod (X10),and body height (X11) were measured for correlation and path analyses.Determination coefficients,path coefficients,and correlation index were calculated.The results revealed a positive correlation (P＜0.01) between the 11 traits and body weight; and multiple regression based on the path coefficients was established among X1 and X2 (in mm),and Y (in g) as Y =-16.448 + 1.063X1 + 0.466X2 (R2 =0.856).In addition,the relationship of the morphological traits and the body weight was analyzed quantitatively.
NETL
NSTL
万方数据
维普
