| 摘要: |
| 采用 3种多元分析方法, 对 3个野生种群和 1个养殖种群的 13个形态比例参数进行比较研究。聚类分析结果表明, 广东湛江和海南临高的种群形态最接近, 福建厦门种群的趋异程度最大。主成分分析构建了 6 个主成分, 其贡献率分别为: 第 1 主成分 23.084%, 第 2 主成分 17.976%, 第 3 主成分 15.321%, 第 4 主成分 13.84%, 第 5 主成分 12.707%, 第 6 主成分 7.770%, 累积贡献率为90.699%。逐步判别选入 6 个贡献率较大的性状进行判别分析, F 检验结果显示, 4 个种群形态差异显著(P<0.01); 同时建立了 4 个种群的判别函数, 其判别准确率 P1、 P2 均为 100%。 综合判别率为 100%。3种多元分析结果均认为, 4个种群日本囊对虾在形态上已产生一定程度的差异, 且集中表现在体重、头胸甲的性状上。
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| 关键词: 日本囊对虾, 形态差异, 聚类分析, 判别分析, 主成分分析 |
| DOI：10.11693/hyhz201004005005 |
| 分类号: |
| 基金项目:海南省重点科技计划项目, 090706 号; 海南省星火产业带专项资金项目, HNXH200903 号; 科技部农业科技成果转化资金项目, 2010GB2E200382 号。 |
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| ANALYSIS OF MORPHOLOGICAL VARIATIONS AMONG THREE WILD AND ONE CULTIVATION POPULATIONS OF MARSUPENAEUS JAPONICUS |
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LI Yi-Jun1, LI Ting1, WANG Ping2, SUN Cheng-Zhi2, CAI Jing-Jing2, SUN Cheng-Bo1
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1.Fisheries College of Guangdong Ocean University;2.Hainan Changjiang Nanjiang Bio-Technology Co., Ltd
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| Abstract: |
| Morphological differences among four groups of Marsupenaeus japonicus were studied with 13 morphological parameters using three multivariation analysis methods (cluster analysis, discriminant analysis, and component analysis). Cluster analysis showed that clams from the Guangdong Zhanjiang and Hainan Lingao population were rather similar in morphology, whereas the Fujian Xiamen population differed greatly from other populations. Through principal component analysis, six principal components were established, with their contributory rates being 23.084%, 17.976%, 15.321%, 13.84%, 12.707%, and 7.770%, respectively, and the cumulative contributory rate being 90.699%. The stepwise discrimination analysis revealed that the four populations differed significantly in morphology (P<0.01). Further, the discrimination functions of the four populations were set up, the discrimination accuracy being 100% for both P1 and P2, and the integrative discrimination accuracy being 100%. The overall results indicate that blind seed selection is relevant to the miniaturization of the cultured population, and that there are some morphological differences among the four populations, e.g. characteristics of carapace.
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| Key words: Marsupenaeus japonicus, Morphological difference, Cluster analysis, Discriminant analysis, Principal component analysis |
