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Morphological and molecular studies on Garra imberba and its related species in China
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作者 Wei-Ying WANG Wei ZHOU +1 位作者 Jun-Xing YANG Xiao-Yong CHEN 《Zoological Research》 CAS CSCD 北大核心 2014年第1期20-32,共13页
Garra imberba is widely distributed in China. At the moment, both Garra yiliangensis and G. hainanensis are treated as valid species, but they were initially named as a subspecies of G. pingi, a junior synonym of G. i... Garra imberba is widely distributed in China. At the moment, both Garra yiliangensis and G. hainanensis are treated as valid species, but they were initially named as a subspecies of G. pingi, a junior synonym of G. imberba. Garra alticorpora and G. nujiangensis also have similar morphological characters to G. imberba, but the taxonomic statuses and phylogenetic relationships of these species with G. imberba remains uncertain. In this study, 128 samples from the Jinshajiang, Red, Nanpanjiang, Lancangjiang, Nujiang Rivers as well as Hainan Island were measured while 1 mitochondrial gene and 1 nuclear intron of 24 samples were sequenced to explore the phylogenetic relationship of these five species. The results showed that G. hainanensis, G. yiliangensis, G. alticorpora and G. imberba are the same species with G. imberba being the valid species name, while G. nujiangensis is a valid species in and of itself. 展开更多
关键词 分子生物学 墨头 中国 形态学 近缘种 亲缘关系 线粒体基因 海南岛
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缺须墨头鱼不同地理居群的形态分化 被引量:2
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作者 何茜 李旭 +1 位作者 周伟 李奇生 《广西师范大学学报(自然科学版)》 CAS 北大核心 2013年第4期128-133,共6页
分布于长江、红河和澜沧江水系的缺须墨头鱼在形态上存在一定的差异,为确认不同地理居群之间是否发生形态分化,将采自以上3个水系32个采集点的248尾标本按照所属水系,分为金沙江、澜沧江、元江和李仙江4个组,对其外部形态特征以及可数... 分布于长江、红河和澜沧江水系的缺须墨头鱼在形态上存在一定的差异,为确认不同地理居群之间是否发生形态分化,将采自以上3个水系32个采集点的248尾标本按照所属水系,分为金沙江、澜沧江、元江和李仙江4个组,对其外部形态特征以及可数性状进行比较,并运用多变量形态学方法对其18个常规性状和17个框架结构性状进行分析。形态比较结果显示,金沙江水系个体在头部和吸盘性状上与其他组间的存在一定差异;可数性状比较结果表明,不同分组间缺须墨头鱼没有明显分化;主成分分析分散值点图显示,没有任一组被独立分出。所以,形态比较与形态度量学研究结果都不能证明其有明显的分化。 展开更多
关键词 缺须墨头鱼 主成分分析 形态度量学 形态分化
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