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题名: PHYLOGENETIC RELATIONSHIPS OF THE GENUS TAKIFUGU (TETRAODONTIFORMES, TETRAODONTIDAE) TESTED BY mtDNA D-LOOP REGION SEQUENCE VARIATIONS
作者: Yu-Bo, Zhang (ribonchang@gmail.com) ; Gan Xiao-Ni ; He Shun-Ping
通讯作者: Yu-Bo, Zhang ; Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
刊名: Acta Hydrobiologica Sinica
发表日期: 2009
卷: 33, 期:4, 页:656-663
收录类别: 其他
英文摘要: The pufferfishes of the genus Takifugu are East Asian fish, mainly distribute along the coastal region in western part of the Sea of Japan and the East China. This genus is attached more and more importance to researchers, for Takifugu rubripes, which is one species in it, has been a new model fish in the post-genomic era. The details of the phylogenetic relationships within the genus remain unresolved. In the present paper, mitochondrial D-loop sequences of 11 species of the genus Takifugu were determined and analyzed to test the present phylogenetic hypotheses. The sequence saturation analysis was inferred from the shape of the trend line, which indicated that the sequence was unsaturated and could be used in the following phylogenetic analysis. After alignment, the sequence compositions and variations were analyzed by using MEGA 3 software. There were 841 sites, among which 395 sites were variable, and 267 were informative. There was significant difference in base compositional bias between the ingroup and the outgroup species. The uncorrected p-distance matrix obtained from the analysis of the alignment of all D-loop sequences showed that the relationships among the different species were closely. Neighbor-joining, Maximum Parsimony, Maximum Likelihood and Bayesian methods were employed for phylogenetics analysis, respectively. Due to the SH test about the phylogeny hypothesis, we chose the Bayesian tree as our best tree in this paper. The Bayesian tree has described a more clearly phylogeny and the analysis also has pointed out the basal species in the genus. The results indicate that the genus form a monophyletic groups, with the sister group consisted by T. oblongus and T. alboplumbeus is the basal group of the genus. Our results also show some confusion about the taxonomy in the genus, according to the data and combined analysis with the morphological characters, we suppose some species are in fact synonymous in this genus, which suggest that the taxonomy should be clarified based on both molecular and morphological data in the future.
ISSN号: 1000-3207
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/18577
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

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Yu-Bo, Zhang (ribonchang@gmail.com) ; Gan Xiao-Ni; He Shun-Ping.PHYLOGENETIC RELATIONSHIPS OF THE GENUS TAKIFUGU (TETRAODONTIFORMES, TETRAODONTIDAE) TESTED BY mtDNA D-LOOP REGION SEQUENCE VARIATIONS,Acta Hydrobiologica Sinica,2009,33(4):656-663
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文件名: PHYLOGENETIC RELATIONSHIPS OF THE GENUS TAKIFUGU (TETRAODONTIFORMES, TETRAODONTIDAE) TESTED BY mtDNA D-LOOP REGION SEQUENCE VARIATIONS.pdf
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