Effects of shell morphological traits on the weight trait of the orange strain of the Manila clam |
| |
Authors: | Zhong-ming Huo Yu-an Wu Zhi-ying Gao Guan-nan Chu Xi-wu Yan Feng Yang Guo-fan Zhang |
| |
Affiliation: | 1. Engineering Research Center of Shellfish Culture and Breeding in Liaoning Province, College of Fisheries and Life Science, Dalian Ocean University, Dalian 116023, PR China;2. Dalian Fisheries Research Institute, Dalian 116023, PR China;3. Zhangzidao Group Co., LTD, Dalian 116023, PR China;4. Key Laboratory of Experimental Marine Biology, Institute of Oceanography, Chinese Academy of Science, Qingdao 266071, PR China |
| |
Abstract: | A new strain of Manila clam with orange shell color was produced after selection within a full-sib family for two generations. In the present study, the shell length, height, and width, and the live body weight of the orange strain were measured, and their correlation coefficients were calculated. The shell morphological traits were used as independent variables, and the live body weight was used as the dependent variable for calculating the path coefficients, correlation index, and determination coefficients. The results showed that the correlation coefficients between each shell morphological trait and the live body weight were all highly significant (P < 0.01). The correlation indices (R2) of morphological traits against the live body weight of clams were larger than 0.85, indicating that the morphology traits were the main factors affecting the body weight. Multiple regression equations were obtained to estimate shell length X1 (cm), shell height X2 (cm), and shell width X3 (cm) against live body weight Y (g): Y = ? 2.62 + 0.34 X1 + 0.145 X2, (X1 < 0.05, X2 < 0.05). The results suggest that the shell length could be used as the main trait for selective breeding and could indirectly make a large improvement in the weight trait. |
| |
Keywords: | Morphology Weight Orange strain Manila clam Correlation coefficients |
本文献已被 ScienceDirect 等数据库收录! |
|