| 凡纳滨对虾６群体的形态差异及判别分析 |
| Discriminant Analysis and Morphological Variations among Six Populations of Litopenaeus vannamei |
| 投稿时间：2010-08-30 修订日期：2010-11-25 |
| DOI： |
| 中文关键词:凡纳滨对虾 形态差异 多元分析 |
| 英文关键词:Litopenaeus vannamei morphological difference multivariation analysis |
| 基金项目:塘沽区科委基金项目（2007XQ16-09）项目资助 |
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| 中文摘要: |
| 运用３种多元分析方法对６个群体凡纳滨对虾的形态差异进行了比较研究和判别分析。聚类分析显示广东湛江和福建厦门的群体形态较为接近，而与浙江、海南三亚群体的形态差异较大；渤海湾捕捞的野生凡纳滨对虾与另外５个群体欧氏距离最远，形态差异也最大。主成分分析构建了４个主成分，贡献率主成分１为２８.９６％、主成分２为１８.２２％、主成分３为１４.8９％、主成分４为１０．５１％，累积贡献率７２．５８％。建立了６个凡纳滨对虾群体判别函数，判别准确率Ｐ１为７６．７％ ～９６．６％、Ｐ２为８２．３％ ～１００％，综合判别准确率为８８．３３％。６个凡纳滨对虾群体在形态上有一定程度的差异，但均未达到亚种水平。 |
| 英文摘要: |
| The comparative study and discriminant analysis of morphological differences among six shrimp groups of Litopenaeus vannamei were conducted with eight morphological parameters using three multivariation analysis methods. Cluster analysis indicated that morphological traits were similar between Guangdong，Xiamen stocks，but quite different from that of Zhejiang and Sanya，Hainan stocks(culture water salinity were 70%o and 10 %0)，euclidean distances were greatest among wild-caught shrimp from Bohai Bay and the other five groups. Through principal component analysis，four principal components were established，with their contributory ratio being 28. 96%，18. 22%，14. 89 % and 10. 51%，and the cumulative contributory ratio being 72. 58%.Discriminant function of 6 groups were established，discrimination accuracy ratio being 76. 7%-96.6% for P1 and 82. 3%-100% for P2，the integrative discrimination accuracy ratio being 88. 33 %。Six groups of Litopenaeus vannamei had a certain degree of morphological differences，but did not reach the level of subspecies.
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| 李小双,崔青曼,袁春营.2010.凡纳滨对虾６群体的形态差异及判别分析[J].水生态学杂志,31(6):87-91. |
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