中文摘要：

利用NTsys-pc2.10e软件对20种海南产芋螺的27个性状特征分别进行了Q型聚类分析、R型聚类分析和主成分分析,据此对芋螺的多样性进行了研究。结果表明,利用Q型聚类分析可将20种海南产芋螺分为二大组3个亚组;利用R型聚类分析可将27种性状特征分为2个大组;主成分分析反映出芋螺分类的重要特征是贝壳大小、内唇和壳口特征;基于芋螺前3位主成分基础上的三维图与聚类分析结果图一致。聚类分析树状图较好地反映了20种芋螺之间的亲缘关系,R型聚类分析与主成分分析相结合有助于选择关键而重要的芋螺分类特征。

英文摘要：

Diversity of 20 Conus species native to Hainan,each of which involved 27 traits,were investigated with software NTSYS-pc 2.10e based on numerical taxonomy methods including Q cluster analysis,R cluster analysis and principal components analysis （ PCA ）. The results showed that 20 cone snails could be classified into 2 groups and 3 subgroups with Q cluster analysis,and 27 traits could be classified into 2 groups with R cluster analysis; Principal components analysis （ PCA ） indicated that the shell size,inner lip and mouth characteristics etc. were of significance for Conus taxonomy; the 3 dimensions plot of the first 3 principal components analysis of 20 Conus species was consistent with that of cluster analysis; the relationship for the 20 species have been analyzed by Q cluster dendrogram,and the combination of R cluster and principal components analysis was helpful for selecting the key characters for genus Conus classification.