| 摘要: |
| 采用聚类分析、判别分析、主成分分析3种多元统计分析方法,研究新引进的萨罗罗非鱼与我国已有的尼罗罗非鱼、以色列红罗非鱼、台湾红罗非鱼、奥利亚罗非鱼和齐氏罗非鱼间的形态差异。结果表明:(1)引进的萨罗罗非鱼头长是体长的35.4%,属"小头"型。(2)萨罗罗非鱼与另外5种罗非鱼之间有着非常显著的形态差异,萨罗罗非鱼在头长、体高和体厚方面占有较明显的优势。(3)在亲缘关系上,萨罗罗非鱼单独为一支,齐氏罗非鱼与奥利亚罗非鱼亲缘关系较近,台湾红罗非鱼与以色列红罗非鱼亲缘关系较近,尼罗罗非鱼、奥利亚罗非鱼与台湾红罗非鱼亲缘关系较近。 |
| 关键词: 萨罗罗非鱼 形态差异 多元统计分析 亲缘关系 |
| DOI：10.11693/hyhz200806022 |
| 分类号: |
| 基金项目:农业部“948”国际引进合作项目,993125号;河南省动物学省级重点学科资助,2005—2007 |
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| MORPHOMETERIC DIFFERENCE BETWEEN BLACKCHIN TILAPIA SAROTHERODON MELANOTHERON AND THE OTHER FIVE TILAPIAS REVEALED BY MULTIVARIATE STATISTICAL ANALYSIS |
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LI Xue-Jun1,2, LI Ai-Jing1, LI Si-Fa2
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1.College of Life Science, Henan Normal University, Xinxiang, 453007;2.The Key Laboratory of Aquatic Genetic Resources and Aquacultural Ecology Certificated by the Ministry of Agriculture, Shanghai Ocean University, Shanghai, 201306
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| Abstract: |
| The morphometeric differences between newly introduced blackchin tilapia and other five tilapias including Nile tilapia, Israel red tilapia, Taiwan red tilapia, blue tilapia and Zilii tilapia of our country were studied with cluster analysis, discriminant analysis and principal component analysis. The results showed: (1) The head length of blackchin tilapia is 35.4% of body length, belonging to the small-headed type. (2) Morphometeric differences between blackchin tilapia and other five tilapias are significant. Blackchin tilapia has greater head length, body depth, and body width than those of the other five. (3) In morphometeric relationship tree, blackchin tilapia forms a separate cluster. Among the five tilapias, Zilii tilapia is close to blue tilapia; Taiwan red tilapia is close to Israel red tilapia; Nile tilapia, blue tilapia and Taiwan red tilapia are close to each other. |
| Key words: Blackchin tilapia, Morphometeric difference, Multivariate statistical analysis, Relationship |
