title: The complete mitochondrial genome sequence of Southwellina hispida supports monophyly of Palaeacanthocephala (Acanthocephala: Polymorphida).
abstract: Acanthocephala is a relatively small, but distinct obligate parasitic group that includes 4 classes: Archiacanthocephala, Palaeacanthocephala, Polyacanthocephala, and Eoacanthocephala. The phylogenetic relationships of acanthocephalans are mainly based on nuclear ribosomal genes. In this study, we determined the complete mitochondrial genome sequence of Southwellina hispida (Palaeacanthocephala: Polymorphida), and used this genome sequence along with other platyzoan species (including syndermatan groups) to assess its phylogenetic position within Acanthocephala. The S. hispida mtDNA is a 14,742 bp circular molecule that contains 36 genes (lacking atp8) encoded in the same direction. Phylogenetic analyses of amino acid sequences for 12 protein-coding genes suggested palaeacanthocephalan species to be monophyletic, and this group to be sister to Eoacanthocephala. These results confirm other morphological and molecular data supporting palaeacanthocephalan monophyly.
authors: Program in Cell Biology and Genetics, College of Medicine, Chungbuk National University, Cheongju 362-763, Republic of Korea.
authors: Mohiuddin
authors: M
authors: Gazi
authors: Program in Cell Biology and Genetics, College of Medicine, Chungbuk National University, Cheongju 362-763, Republic of Korea.
authors: Jiyeon
authors: J
authors: Kim
authors: Division of EcoScience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 120-750, Republic of Korea. Electronic address: jkpark@ewha.ac.kr.
authors: Joong-Ki
authors: JK
authors: Park
mesh_terms: D000049:Acanthocephala / Q000145:classification / Q000235:genetics*; D000818:Animals; D001483:Base Sequence; D018509:DNA, Helminth / Q000235:genetics*; D004272:DNA, Mitochondrial / Q000235:genetics*; D004275:DNA, Ribosomal / Q000235:genetics; D049751:Genome, Helminth; D054629:Genome, Mitochondrial; D010802:Phylogeny; D012337:RNA, Ribosomal, 18S / Q000235:genetics; D017422:Sequence Analysis, DNA
chemical_list: D018509:DNA, Helminth; D004272:DNA, Mitochondrial; D004275:DNA, Ribosomal; D012337:RNA, Ribosomal, 18S
keywords: Acanthocephala; Mitochondrial genome; Molecular phylogeny; Palaeacanthocephala; Polymorphida; Southwellina hispida