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Lei D.,Huazhong Agricultural University | Conteh Kanu U.,Huazhong Agricultural University | Zhao G.,Huazhong Agricultural University | Xie P.,Huazhong Agricultural University | And 4 more authors.
Mitochondrial DNA | Year: 2015

Based upon the morphological characters, the genus Triplophysa (plateau Loach) is a highly diverse group in the family Balitoridae (or Cypriniformes, Cobitoidea) with 133 valid species. Therefore, the taxonomic relationship of this species at the genetic level remains ambiguous. In the present study, we sequenced the complete mitochondrial genome of Triplophysa dorsalis. In order to understand its position and genetic background at the gene level, the characteristics of mitochondrial DNA sequences and phylogenetic relationship were examined. The mitochondrial genome of T. dorsalis is similar to those of the typical vertebrates, 16 572 bp in length, including 13 protein-coding genes, 2 ribosomal RNA genes, 22 transfer RNA genes, and a non-coding control region (D-loop). All genes were encoded on the heavy strand except for ND6 and 8 tRNA genes. The overall base composition of the heavy strand was 28.16%, 28.41%, 25.62% and 17.82% for A, T, C and G, respectively. Phylogenetic analyses showed that the seven Triplophysa species clustered together with T. dorsalis to form a sister group with Triplophysa strauchii, T. bleekeri, T. stoliczkai and T. bombifrons. The two genera Triplophysa and Barbatula formed a sister-group relationship, the species Homatula potanini located in the intermediate position, and the genus Leptobotia elongata was in the basal position in the subfamily Nemacheilidae. Further investigations with more Triplophysa species need to be performed for better understanding of the evolutionary history of this fascinating genus. © 2015 Taylor & Francis. Source


Wang J.,Huazhong Agricultural University | Zhou Q.,Huazhong Agricultural University | Xie C.,Huazhong Agricultural University | Li H.,Xinjiang Fisheries Research Institute | Cai L.,Xinjiang Fisheries Research Institute
Research of Environmental Sciences | Year: 2015

The Benthic-Index of Biotic Integrity (B-IBI) was applied to evaluate the health state of Irtysh River drainage in Xinjiang Uygur Autonomous Region, in order to build an assessment criteria and standard of ecosystem health for cross-border rivers in northwestern China. Twenty-three candidate metrics of benthic macroinvertebrates were selected from 10 typical sampling sites from Irtysh River sampled in July, August, October 2012 and May 2013. Then, five key metrics were detected and entered into the final B-IBI system, including the number of the total taxa, the number of EPT (Ephemeroptera, Plecoptera, Trichoptera), the three-dominant taxa percentage, the Plecoptera percentage and the clingers' percentage. Based on 25% percentile of B-IBI value in reference sampling sites, the assessment grades were as follows: B-IBI>2.04 represents excellent, 1.53 Source


Hu S.,Huazhong Agricultural University | Niu J.,Xinjiang Fisheries Research Institute | Xie P.,Huazhong Agricultural University | Liu C.,Huazhong Agricultural University | And 3 more authors.
Mitochondrial DNA | Year: 2015

The complete mitochondrial genome of Leuciscus leuciscus baicalensis was cloned and sequenced in the present study. The genome which had a mostly conserved structural organization in comparison with that of other teleost fish was 16,606 bp in size. It consisted of 37 genes (13 protein-coding genes, 22 transfer RNA genes and 2 ribosomal RNA genes), and 2 main non-coding regions (the control region and the origin of the light strand replication). All protein-coding genes started with ATG except for COX 1, which began with GTG. However, the termination codons of 13 protein-coding genes varied with TAA, TA, T or TAG. The complete mitochondrial genome sequence provided useful information for phylogenetic analysis and studies of population genetics of L. leuciscus baicalensis. © 2014 Informa UK Ltd. Source


Xie P.,Huazhong Agricultural University | Ao M.,Huazhong Agricultural University | Liu C.,Huazhong Agricultural University | Zhang Z.,Huazhong Agricultural University | And 4 more authors.
Mitochondrial DNA | Year: 2016

As reported, previous studies of Phoxinus phoxinus ujmonensis (Cypriniformes: Cyprinidae) have focused primarily on morphology and ecology. In this study, we cloned and sequenced the complete nucleotide sequence of the mitochondrial genome for P. phoxinus ujmonensis. The mitogenome was 17,738 bp in length, including 13 protein-coding genes, 22 transfer RNA genes, 2 ribosomal RNA genes and 1 control region. All genes were encoded on the heavy strain except for ND6 and eight tRNA genes. The overall base composition of the heavy strain was 28.50% for A, 28.24% for T, 25.32% for C and 17.94% for G. The control region was revealed to contain tandem repeats. The mitogenome data of P. phoxinus ujmonensis should contribute to phylogenetic analysis and studies of population genetics of Phoxinus fishes. © 2014 Informa UK Ltd. Source


Zhao X.,Huazhong Agricultural University | Hu S.,Huazhong Agricultural University | Xie P.,Huazhong Agricultural University | Ao M.,Huazhong Agricultural University | And 3 more authors.
Mitochondrial DNA | Year: 2015

In this study, we cloned and sequenced the complete mitochondrial genome of Barbatula nuda. The genome was found to be 16,619 bp in size with a mostly conserved structural organization when compared with that of other teleost fish. It contained 37 genes (13 protein-coding genes, 22 transfer RNA genes, and 2 ribosomal RNA genes) and 2 main non-coding regions (the control region and the origin of the light-strand replication). All protein-coding genes are initiated with ATG except for COX 1, which begin with GTG instead. However, the termination codons of 13 protein-coding genes varied with TAA, TA, T or TAG. The complete mitochondrial genome sequence is useful for phylogenetic analysis and studies of population genetics of B. nuda. © 2013 Informa UK Ltd. Source

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