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PHYLOGENETIC RELATIONSHIPS OF THE GENUS TAKIFUGU (TETRAODONTIFORMES, TETRAODONTIDAE) TESTED BY mtDNA D-LOOP REGION SEQUENCE VARIATIONS
Yu-Bo, Zhang (ribonchang@gmail.com); Gan Xiao-Ni; He Shun-Ping; Yu-Bo, Zhang; Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
2009
Source PublicationActa Hydrobiologica Sinica
ISSN1000-3207
Volume33Issue:4Pages:656-663
AbstractThe 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.
Indexed By其他
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/18577
Collection期刊论文
Corresponding AuthorYu-Bo, Zhang; Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
Recommended Citation
GB/T 7714
Yu-Bo, Zhang ,Gan Xiao-Ni,He Shun-Ping,et al. PHYLOGENETIC RELATIONSHIPS OF THE GENUS TAKIFUGU (TETRAODONTIFORMES, TETRAODONTIDAE) TESTED BY mtDNA D-LOOP REGION SEQUENCE VARIATIONS[J]. Acta Hydrobiologica Sinica,2009,33(4):656-663.
APA Yu-Bo, Zhang ,Gan Xiao-Ni,He Shun-Ping,Yu-Bo, Zhang,&Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China.(2009).PHYLOGENETIC RELATIONSHIPS OF THE GENUS TAKIFUGU (TETRAODONTIFORMES, TETRAODONTIDAE) TESTED BY mtDNA D-LOOP REGION SEQUENCE VARIATIONS.Acta Hydrobiologica Sinica,33(4),656-663.
MLA Yu-Bo, Zhang ,et al."PHYLOGENETIC RELATIONSHIPS OF THE GENUS TAKIFUGU (TETRAODONTIFORMES, TETRAODONTIDAE) TESTED BY mtDNA D-LOOP REGION SEQUENCE VARIATIONS".Acta Hydrobiologica Sinica 33.4(2009):656-663.
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