| 北方须鳅4个地理种群的形态差异与判别分析 |
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| 引用本文： | 孙鹏,马波,赵文阁.北方须鳅4个地理种群的形态差异与判别分析[J].鲑鳟渔业,2014(2):14-19. |
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| 作者姓名： | 孙鹏 马波 赵文阁 |
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| 作者单位： | [1]哈尔滨师范大学生命科学与技术学院,黑龙江哈尔滨150025 [2]中国水产科学研究院黑龙江水产研究所,黑龙江哈尔滨150070 |
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| 基金项目： | 中国水产科学研究院基本科研业务费（2013A0101）. |
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| 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。
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| 关 键 词： | 北方须鳅 形态差异 判别分析 |
Morphological Variation and Discriminant Analysis in Four Geographical Populations of Loach Barbatula nuda |
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| Authors: | SUN Peng MA Bo ZHAO Wen-ge |
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| Institution: | 1. College of Life Science and Technology, Harbin Normal University, Harbin 150025, China; 2. Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Harbin 150070, China) |
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| Abstract: | In the present paper, 14 morphometrical characters were measured in 137 samples of 4 geographic populations of loach Barbatula nuda collected from Tureen 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 dis-tance/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 Tureen River population and Songhua River population. However, there was great difference be-tween Heilongjiang River populations and Tumen River population, and between Songhua River population and Yalu River popula-tion. 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 ofBarbatula nuda which can be dis- criminated by differences in morphometrical characters |
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| Keywords: | Barbatula nuda morphological difference discriminant analysis |
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