title: Molecular phylogenetic position of Schistosoma sinensium in the genus Schistosoma.
abstract: The status of Schistosoma sinensium (samples from Thailand and from Sichuan, China) relative to other species of the genus Schistosoma was investigated using DNA sequences from the mitochondrial cytochrome c oxidase subunit 1 (CO1) gene (partial) and the nuclear ribosomal DNA second internal transcribed spacer 2 (ITS2). Trees inferred from these sequences place S. sinensium as sister to the S. japonicum group and suggest a basal position in the clade utilizing snails of the family Pomatiopsidae. The sequence differences between specimens of S. sinensium from China and Thailand are at least as great as between S. malayensis and S. mekongi. Schistosoma sinensium is probably best regarded as a species complex.
authors.affiliation: agatsuma@med.kochi-ms.ac.jp
authors.forename: T
authors.initials: T
authors.lastname: Agatsuma
authors.forename: M
authors.initials: M
authors.lastname: Iwagami
authors.forename: C X
authors.initials: CX
authors.lastname: Liu
authors.forename: Y
authors.initials: Y
authors.lastname: Saitoh
authors.forename: M
authors.initials: M
authors.lastname: Kawanaka
authors.forename: S
authors.initials: S
authors.lastname: Upatham
authors.forename: D
authors.initials: D
authors.lastname: Qui
authors.forename: T
authors.initials: T
authors.lastname: Higuchi
mesh_terms: D000818:Animals; D003576:Electron Transport Complex IV / Q000235:genetics; D017238:Genes, Helminth; D010802:Phylogeny; D016133:Polymerase Chain Reaction / Q000379:methods; D012547:Schistosoma / Q000235:genetics*; D016415:Sequence Alignment; D017422:Sequence Analysis, DNA
chemical_list: D003576:Electron Transport Complex IV