Phylogenetic position of the freshwater fish trypanosome, Trypanosoma ophiocephali (Kinetoplastida) inferred from the complete small subunit ribosomal RNA gene sequence.

Phylogenetic position of the freshwater fish trypanosome, Trypanosoma ophiocephali (Kinetoplastida) inferred from the complete small subunit ribosomal RNA gene sequence.
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从完整的小亚基核糖体 RNA 基因序列推断淡水鱼锥虫、蛇头锥虫(动质体)的系统发育位置

DOI:
10.1007/s00436-010-1759-4
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发表时间:
2010-04
影响因子:
2
通讯作者:
Li, Aihua
Li, Aihua
中科院分区:
医学3区
文献类型:
--
作者:
Gu, Zemao;Wang, Jianguo;Ke, Xiaoli;Liu, Yang;Liu, Xiaoling;Gong, Xiongning;Li, Aihua

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测定了淡水鱼锥虫Trypanosoma ophiocephali Chen(1964)小亚基rRNA(SSrRNA)基因的全序列(2,142个核苷酸)。系统发育分析推断使用相邻连接,最大简约,贝叶斯方法证明了存在一个“水生分支”。T.结果表明,蛇头虫是淡水鱼锥虫的一种,与中华锥虫和鲤鱼锥虫为姐妹种,自举值分别为98%MP、100%NJ和100%Bay。SSrRNA基因序列和形态特征的高度相似性表明,T. ophiocephali、T. siniapa和T. sp. Carpio可能是同一物种。系统发育树进一步表明,中国淡水鱼锥虫可能是并系的,鱼类锥虫的宿主特异性较低。
The complete small subunit rRNA (SSrRNA) gene sequence (2,142 nucleotides) of the freshwater fish trypanosome Trypanosoma ophiocephali Chen (1964) was determined. The phylogenetic analysis deduced using neighbor-joining, maximum parsimony, and Bayesian methods demonstrated the existence of an "aquatic clade". T. ophiocephali was revealed to be a member of the freshwater fish trypanosomes and form the sister species with Trypanosoma siniperca and Trypanosoma sp. Carpio with high bootstrap values (98% MP, 100% NJ, 100% Bay). The high similarity of SSrRNA gene sequences and morphometric characters showed that T. ophiocephali, T. siniperca and T. sp. Carpio probably were the same species. The phylogenetic trees further suggested that Chinese freshwater fish trypanosome might be paraphyletic, and fish trypanosomes should have low host specificity.
DOI: 10.1007/s00436-007-0536-5
发表时间: 2007-08-01
影响因子: 2
作者:
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