Abstract
Abstract
Tracheophilus cymbius (Trematoda: Cyclocoelidae) is a common tracheal fluke of waterfowl, causing serious loss in the poultry industry. However, taxonomic identification of T. cymbius remains controversial and confused. Mitochondrial (mt) genomes can provide genetic markers for the identification of closely related species. We determined the mt genome of T. cymbius and reconstructed phylogenies with other trematodes. The T. cymbius mt genome is 13,760 bp in size, and contains 12 protein-coding genes (cox 1–3, nad 1–6, nad 4L, cyt b and atp 6), 22 transfer RNA (tRNA) genes, two ribosomal RNA genes and one non-coding region. All are transcribed in the same direction. The A + T content is 62.82%. ATG and TAG are the most common initiation and termination codons, respectively. Phylogenetic analyses of concatenated nucleotide sequences show T. cymbius grouping in suborder Echinostomata, and clustering together, with high statistical support, as a sister taxon with Echinochasmus japonicus (Echinochasmidae), the two forming a distinct branch rooted to the ancestor of all Echinostomatidae and Fasciolidae species. This is the first report of the T. cymbius mt genome, and the first reported mt genome within the family Cyclocoelidae. These data will provide a significant resource of molecular markers for studying the taxonomy, population genetics and systematics of trematodes.
Publisher
Cambridge University Press (CUP)
Subject
Animal Science and Zoology,General Medicine,Parasitology
Reference28 articles.
1. The complete mitochondrial genome of Orientobilharzia turkestanicum supports its affinity with African Schistosoma spp.
2. Molecular phylogeny and systematics of the Echinostomatoidea Looss, 1899 (Platyhelminthes: Digenea)
3. Studies on trematodes of the family Cyclocoelidae of Fujian with further remarks on the life history and epidemiology of Tracheophilus cymbius (Dies., 1850) Skrjabin, 1913;Tang;ACTA Zoologica Sinica,1978
4. Skrjabin KI (1913) Tracheophilus sisowi n.g., n.sp. Zentralblatt für Bakteriologie, Parasitenkunde, lnfektionskrankheiten und Hygiene Abt. I, Originale 69, 90–94.
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