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Position: Home > Articles > Morphological Variation and Discriminant Analysis in Four Geographical Populations of Loach Barbatula nuda Chinese Journal of Fisheries 2014 (2) 14-19

北方须鳅4个地理种群的形态差异与判别分析

作  者：
孙鹏;马波;赵文阁
单  位：
中国水产科学研究院黑龙江水产研究所;哈尔滨师范大学生命科学与技术学院
关键词：
北方须鳅;形态差异;判别分析
摘  要：
用聚类分析、主成分分析、判别分析等方法比较了图们江、松花江、鸭绿江、黑龙江4个地理种群北方须鳅Barbatula nuda的14个形态性状,探讨了不同地理种群间的形态差异。单因素方差分析显示:4个地理种群北方须鳅的头高/体长差异显著(P<0.05),头长/体长、尾柄长/体长、背吻距/体长、背尾距/体长差异极显著(P<0.01);主成分分析与聚类分析结果基本一致,黑龙江和鸭绿江差异最小,其次是图们江和松花江,而黑龙江与图们江,鸭绿江与松花江种群间差异较大;判别分析获得了6个比例性状,构建了区分上述4个种群的判别函数,综合判别准确率达87%。研究显示,北方须鳅的4个地理种群间形态特征产生了一定的差异,可以运用判别分析将其进行初步区分。
译  名：
Morphological Variation and Discriminant Analysis in Four Geographical Populations of Loach Barbatula nuda
作  者：
SUN Peng;MA Bo;ZHAO Wen-ge;College of Life Science and Technology, Harbin Normal University;Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences;
关键词：
Barbatula nuda;;morphological difference;;discriminant analysis
摘  要：
In the present paper, 14 morphometrical characters were measured in 137 samples of 4 geographic populations of loach Barbatula nuda collected from Tumen River, Songhua River, Yalu River and Heilongjiang River, and discrimination was conducted by one-way analysis of variance, cluster analysis, principle component analysis and discriminating analysis to evaluate the morphological variations among the 4 populations. The one-way analysis of variance revealed that the head height/body length was found significant difference among the 4 populations(P<0.05),and that the head length/body length, peduncle length /body length, dorsal snout distance/body length, and dorsal caudal fin distance/body length were very significant differences(P<0.01).The clustering analysis and principal component analysis showed the identical results, the minimal difference between Heilongjiang River population and Yalu River population, followed by the Tumen River population and Songhua River population. However, there was great difference between Heilongjiang River populations and Tumen River population, and between Songhua River population and Yalu River population.The discriminating functions were established in the 4 populations with the average discriminant accuracy of 87%. The findings indicate that there were significant differences in morphology among the 4 geographic populations of Barbatula nuda which can be discriminated by differences in morphometrical characters

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