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Correlation of growth-related traits and their effects on body weight of the mud crab (Scylla paramamosain)

文献类型: 外文期刊

作者: Ma, H. Y. 1 ; Ma, C. Y. 1 ; Ma, L. B. 1 ; Xu, Z. 1 ; Feng, N. N. 1 ; Qiao, Z. G. 1 ;

作者机构: 1.Chinese Acad Fishery Sci, East China Sea Fisheries Res Inst, Minist Agr, Key Lab East China Sea & Ocean Fishery Resources, Shanghai, Peoples R China

关键词: Scylla paramamosain;Growth-related traits;Path analysis;Correlation analysis;Multiple regression equation

期刊名称:GENETICS AND MOLECULAR RESEARCH ( 影响因子:0.764; 五年影响因子:0.912 )

ISSN: 1676-5680

年卷期: 2013 年 12 卷 4 期

页码:

收录情况: SCI

摘要: In this study, we analyzed the correlation of 20 growth-related traits and their effects on body weight of Scylla paramamosain. The correlation coefficients in all trait pairs were significantly high, ranging from 0.551 to 0.999. Among 19 X-Y pairs, the correlation coefficient between traits X-1 and Y was the highest, whereas that between X-13 and Y was the lowest. Path analysis indicated that only two traits (X-1 and X-14) can significantly affect body weight (Y) directly, with the path coefficients being 0.800 and 0.198, respectively. The determination coefficients (d(i)) of traits X-1 and X-14 to body weight were 0.640 and 0.039, respectively, and the total d(i) was 0.965, indicating that both traits were the key factors affecting body weight. Moreover, traits X-1 and X-14 were confirmed to be significantly related to body weight. Finally, a best-fit linear regression equation was constructed as Y = 4.192X(1) + 2.242X(14) - 169.737.

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