| 摘要: |
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| 关键词: 七带石斑鱼 野生群体 形态学差异 分析 |
| DOI：10.11693/hyhz200806017 |
| 分类号: |
| 基金项目:国家高技术研究发展计划(863计划)项目资助,2006AA10A414号;农业部948项目,2008-Z8号 |
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| MORPHOLOGICAL VARIATION IN TWO WILD POPULATIONS OF SEVENBAND GROUPER (EPINEPHELUS SEPTEMFASCIATUS) |
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WANG Xin-An1,2, MA Ai-Jun1,2, CHEN Chao1,2, YANG Zhi3, QU Jiang-Bo3
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1.Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Science;2.Key Laboratory for Sustainable Utilization of Marine Fisheries Resource, Ministry of Agriculture, Qingdao, 266071;3.Yantai Tianyuan Aquatic Limited Corporation, Yantai, 264003
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| Abstract: |
| Morphologic comparison between two different populations of Epinephelus septemfasciatus from Japan and South Korea was conducted with 14 morphological indices using statistics methods. The results of t-test indicate that 12 of 14 morphological indices were significantly different (P < 0.01) between the two populations. Principal component analysis revealed three principal components, contributing 29.87%, 25.09%, and 16.88%, respectively, and reaching cumulatively 71.80%. Therefore, the morphological variations between the two populations are significant, and come mainly from the first principal component. The results of discriminant analysis revealed also a significant difference between the two populations (P < 0.0001). Two discriminant functions were obtained; the identification accuracy and the total discriminant accuracy were all 100%, which shows that it is feasible to adopt stepwise discriminatory analysis to distinguish the two populations. In this study, all the results have revealed some morphological differences between the two populations. However, almost all the morphological indices were not different enough to feature a subspecies. In addition, the result of discriminant analysis agrees with that of principal component analysis and t-test, leading to the same conclusion. |
| Key words: Sevenband grouper Epinephelus septemfasciatus, Wild populations, Morphological difference, Analysis |
