Abstract:Seven morphometric traits and weight traits of wild Atrina pectinta, including shell length (SL),shell width (SW), shell height (SH), live body weight (WG), tissue weight (WT), adductor muscle weight (WM) and shell dip angle(AG), were measured. The relationships between these morphological traits (SL, SW, SH, and SA) and weight traits (WG, WT, and WM) were evaluated by correlation analysis and path analysis. Traits such as SL, SW, SH and SA were used as independent variables, while WG, WT and WM were used as a dependent variables. It was found that correlation coefficients between morphometric traits (SL, SW, and SH) and weight traits (WG, WT, and WM) were significantly different (P<0.01). Shell height, as a key effective factor, had predominant direct impact and indirect impact on weight traits. Shell length and width, as two secondary factors, showed significant indirect impact through shell height and slight direct impact on weight traits. The morphometric traits having significant impact on weight traits were used to establish the multiple regression equations of WG, WT and WM: Y=69.112SH+52.823SW-751.36, Y=38.485SW-472.912, Y=4.275SH-18.610.The results provide a theoretical tool for genetic breeding study of A. pectinta.
