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《Oceanologia et Limnologia Sinica》 2016-01
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MORPHOLOGICAL VARIATIONS AMONG THREE DIFFERENT POPULATIONS OF TAKIFUGU RUBRIPES

MA Ai-Jun;WANG Xin-An;SUN Zhi-Bin;ZHAO Yan-Fei;SUN Jian-Hua;WANG Guang-Ning;MENG Xue-Song;LIU Sheng-Cong;ZHANG Tao;Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences,Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture;Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology;Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology;Dalian Tianzheng Industrial Co.Ltd.;  
Morphological comparison using16 morphological indices among three populations of Takifugu rubripes from group R(farmed in Dalian, NE China), J(Japanese) and Y(wild one from the Yellow Sea) was conducted statistically in hierarchical cluster analysis, principal component analysis, discriminatory analysis, and one-way ANOVA analysis. The hierarchical cluster analysis showed that the morphological difference between J and R was small, while that between Y and R was the biggest. Principal component analysis revealed three principal components, contributing 54.961%, 12.129%, and 6.459%, and reaching cumulatively 73.549%. Therefore, the morphological variations among the three populations were significant(P0.05), and come mainly from the first principal component. The results of discriminant analysis revealed also a significant(P0.05) or very significant(P0.01) difference among the three groups. Three discriminant functions were obtained, the discrimination accuracy being 97.69%—100%(P1) and 97.39%—100%(P2), the integrated discrimination accuracy being 98.62%, which shows that it is feasible to adopt stepwise discriminatory analysis to distinguish the populations. The results of One-way ANOVA analysis and multiple comparison are in accordance with the conclusion of other methods, and they reflect morphological variations among the populations from different points of view.
【Fund】: 中央级公益性科研院所基本科研业务费专项资金资助 20603022012005号;; 大连金州新区科技计划项目资助 2012-B1-012号
【CateGory Index】: S917.4
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