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对长江水系中华绒螯蟹、莱茵河野生中华绒螯蟹和日本绒螯蟹三个种群的形态特征进行了判别研究。可数性状分析的结果表明,长江水系中华绒螯蟹、莱茵河野生中华绒螯蟹和日本绒螯蟹三个种群,两两之间差异极显著。聚类分析的结果,把长江水系中华绒螯蟹和莱茵河野生中华绒螯蟹划为一组,日本绒螯蟹为另一组。判别分析建立起三者的判别函数,雌雄蟹判别的正确率分别为83.1%、91.9%。
The morphological characteristics of three populations of Chinese mitten crab (Eriocheir sinensis) from the Yangtze River, wild Eriocheir sinensis (Rhubarb) and Japanese mitten crab (Eriocheir sinensis) were studied. The results of countable trait analysis showed that there was a significant difference between the three populations of the Chinese mitten crab, the Yangtze River red crab and the Japanese mitten crab in the Yangtze River. According to the results of cluster analysis, the Chinese mitten crab (Eriocheir sinensis) and the wild Rhinopitheist sinensis (Eriocheir sinensis) in the Yangtze River were classified as one group and the Japanese mitten crab (Eriocheir sinensis) was another group. Discriminant analysis established the discriminant function of the three, male and female crabs to determine the correct rates were 83.1%, 91.9%.