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Morphological comparison between a selected fast-growing strain and the common cultured strain of turbot Scophthalmus maximus

文献类型： 外文期刊

作者： Liang Xingming 1 ; Ma Aijun 1 ; Wang Xin'an 1 ; Li Juan 1 ; Huang Zhihui 1 ; Shang Xiaomei 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Qingdao Key Lab Marine Fish Breeding & Biotechnol, Yellow Sea Fisheries Res Inst, Qingdao 266071, Peoples R China

关键词： Scophthalmus maximus;divergence by selection;quantitative trait;analysis

期刊名称：CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY （ 影响因子：1.068； 五年影响因子：0.983 ）

ISSN： 0254-4059

年卷期： 2012 年 30 卷 4 期

页码：

收录情况： SCI

摘要： To evaluate the effect of genetic improvement of the turbot Scophthalmus maximus, we analyzed morphological differences between a fast-growing strain obtained by family selection and the common cultured strain, by principal component analysis, stepwise discriminant analysis, and t -tests. Although they clearly differed morphologically, plots of the principal components of the two strains partially overlapped. However, the difference between the strains was supported with very high precision by discriminant analysis. The t -tests revealed that 4 of the 13 morphological traits analyzed were highly significantly different (P < 0.01), 4 traits also differed significantly (P < 0.05), and the remainder did not differ significantly. The coefficients of difference of the 13 traits were all lower than the threshold value between subspecies (1.28). Together, the results indicate that a trend for segregation of characters from the common cultured strain have already appeared in the selected fast-growing strain but the degree of segregation have not risen to subspecies level.

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