title: Analysis of sequence variation in Gnathostoma spinigerum mitochondrial DNA by single-strand conformation polymorphism analysis and DNA sequence.
abstract: Morphological variations were observed in the advance third stage larvae of Gnathostoma spinigerum collected from swamp eel (Fluta alba), the second intermediate host. Larvae with typical and three atypical types were chosen for partial cytochrome c oxidase subunit I (COI) gene sequence analysis. A 450 bp polymerase chain reaction product of the COI gene was amplified from mitochondrial DNA. The variations were analyzed by single-strand conformation polymorphism and DNA sequencing. The nucleotide variations of the COI gene in the four types of larvae indicated the presence of an intra-specific variation of mitochondrial DNA in the G. spinigerum population.
authors.affiliation: Department of Helminthology, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand.
authors.forename: Charinthon
authors.initials: C
authors.lastname: Ngarmamonpirat
authors.forename: Jitra
authors.initials: J
authors.lastname: Waikagul
authors.forename: Songsak
authors.initials: S
authors.lastname: Petmitr
authors.forename: Paron
authors.initials: P
authors.lastname: Dekumyoy
authors.forename: Wichit
authors.initials: W
authors.lastname: Rojekittikhun
authors.forename: Malinee T
authors.initials: MT
authors.lastname: Anantapruti
mesh_terms: D000818:Animals; D018509:DNA, Helminth / Q000032:analysis / Q000235:genetics; D004272:DNA, Mitochondrial / Q000032:analysis / Q000235:genetics*; D003576:Electron Transport Complex IV / Q000235:genetics; D014644:Genetic Variation; D006039:Gnathostoma / Q000235:genetics* / Q000254:growth & development; D007814:Larva / Q000235:genetics; D008969:Molecular Sequence Data; D016133:Polymerase Chain Reaction / Q000379:methods; D018807:Polymorphism, Single-Stranded Conformational; D017422:Sequence Analysis, DNA
chemical_list: D018509:DNA, Helminth; D004272:DNA, Mitochondrial; D003576:Electron Transport Complex IV