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黑龙江流域两种细鳞鲑的形态学比较及其分类地位初探
引用本文:马波,尹家胜,李景鹏.黑龙江流域两种细鳞鲑的形态学比较及其分类地位初探[J].动物分类学报,2005,30(2):257-260.
作者姓名:马波  尹家胜  李景鹏
作者单位:1. 中国水产科学研究院黑龙江水产研究所,哈尔滨,150070;东北农业大学,哈尔滨,150030
2. 中国水产科学研究院黑龙江水产研究所,哈尔滨,150070
3. 东北农业大学,哈尔滨,150030
基金项目:科技部公益性研究专项基金,中国水产科学院科研项目
摘    要:对比研究了分布于我国黑龙江流域具钝吻和尖吻两种形态特征的细鳞鲑,其主要形态学性状的显著差异达到种间分化水平.细鳞鲑属Brachymystax在中国应有两个种,分别为图们江细鳞鲑B.tumensis(具钝吻特征)和细鳞鲑B.lenok(具尖吻特征).

关 键 词:细鳞鲑属  图们江细鳞鲑  细鳞鲑  形态学比较  分类地位  中国

COMPARATIVE STUDIES ON MORPHOLOGY AND TAXONOMIC POSITION OF TWO SPECIES OF LENOK
MA Bo,YIN Jia-Sheng,LI Jing-Peng.COMPARATIVE STUDIES ON MORPHOLOGY AND TAXONOMIC POSITION OF TWO SPECIES OF LENOK[J].Acta Zootaxonomica Sinica,2005,30(2):257-260.
Authors:MA Bo  YIN Jia-Sheng  LI Jing-Peng
Abstract:Variations in the morphology of lenok (Brachymystax) from Heilong River in China were investigated. The observation shows that a classification of sympatric species of Brachymystax lenok based on their main biological characters. The B.tumensis were distinct in having a blunt snout which had a slight turning at the tip, edge of maxilla extending to around middle of eye, 20-22 gill rakers and not having red spots on body. The B.lenok had sharp snout which tip is extended and the lower lip is inferior, having red spots on body, 28-30 gill rakers and edge of maxilla not reaching around middle of eye. In addition, significant difference in their outline shape indices of the two species, and allowed the separation of the species by means of a discriminate function. So, there have been two species of lenok in China, B.tumensis blunt snout lenok and B.lenok sharp snout lenok.
Keywords:Brachymystax  B  tumensis  B  lenok  morphological difference  taxonomic position  China  
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