title: Complete Mitochondrial genome of an equine intestinal parasite, Triodontophorus brevicauda (Chromadorea: Strongylidae): the first characterization within the genus.
abstract: The complete mitochondrial (mt) genome sequence of Triodontophorus brevicauda, an intestinal equine nematode parasite was determined for the first time. The circular T. brevicauda mt genome is 14,305 bp in length and contains 36 genes, of which 12 code for protein, 22 for transfer RNA, and two for ribosomal RNA, and lacks atp8 mtDNA gene. Phylogenetic analysis based on the concatenated amino acid sequence of the 12 protein-coding genes was performed using three different tree-building methods. The Strongyloidea cluster divides into two large branches, and each nematode family included in our study forms an independent clade, though paraphyly confounds the issue at some nodes. T. brevicauda clusters together with Cylicocyclus insignis with high statistical support. The mtDNA data in this study not only provide a new mtDNA resource for phylogeny, but also become a novel and useful genetic marker for further studies on the identification, population genetics, and molecular epidemiology of the genus Triodontophorus in equine.
authors.affiliation: College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province 163319, PR China.
authors.forename: Hong
authors.initials: H
authors.lastname: Duan
authors.affiliation: Department of Parasitology, Heilongjiang Institute of Veterinary Science, Qiqihar, Heilongjiang Province 161006, PR China.
authors.forename: Jun-Feng
authors.initials: JF
authors.lastname: Gao
authors.affiliation: Department of Parasitology, Heilongjiang Institute of Veterinary Science, Qiqihar, Heilongjiang Province 161006, PR China.
authors.forename: Mei-Ru
authors.initials: MR
authors.lastname: Hou
authors.affiliation: College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province 163319, PR China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province 163319, PR China.
authors.forename: Ze-Xuan
authors.initials: ZX
authors.lastname: Liu
authors.affiliation: College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province 163319, PR China.
authors.forename: De-Zhen
authors.initials: DZ
authors.lastname: Gao
authors.affiliation: College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province 163319, PR China.
authors.forename: Dong-Hui
authors.initials: DH
authors.lastname: Guo
authors.affiliation: College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province 163319, PR China.
authors.forename: Dong-Mei
authors.initials: DM
authors.lastname: Yue
authors.affiliation: College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province 163319, PR China.
authors.forename: Xin
authors.initials: X
authors.lastname: Su
authors.affiliation: College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province 163319, PR China.
authors.forename: Xue
authors.initials: X
authors.lastname: Fu
authors.affiliation: College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province 163319, PR China. Electronic address: chunrenwang@sohu.com.
authors.forename: Chun-Ren
authors.initials: CR
authors.lastname: Wang
mesh_terms: D000818:Animals; D018509:DNA, Helminth / Q000235:genetics; D005786:Gene Expression Regulation / Q000502:physiology; D054629:Genome, Mitochondrial; D015801:Helminth Proteins / Q000235:genetics / Q000378:metabolism; D010802:Phylogeny; D018510:RNA, Helminth / Q000235:genetics; D017183:Strongylida / Q000235:genetics*
chemical_list: D018509:DNA, Helminth; D015801:Helminth Proteins; D018510:RNA, Helminth
keywords: Complete mitochondrial DNA; Phylogenetic analysis; Strongylidae; Triodontophorus brevicauda