T. AgatsumaM. IwagamiC. X. LiuY. SaitohM. KawanakaS. UpathamD. QuiT. HiguchiDepartment of Environmental Health ScienceKochi Medical SchoolAzabu UniversityNational Institute of Infectious DiseasesMahidol UniversitySichuan Inst. of Parasitic DiseasesUniversity of Fukui Faculty of Medical Sciences2018-09-072018-09-072001-09-12Journal of Helminthology. Vol.75, No.3 (2001), 215-2210022149X2-s2.0-0034869554https://repository.li.mahidol.ac.th/handle/20.500.14594/26386The 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.Mahidol UniversityAgricultural and Biological SciencesImmunology and MicrobiologyArticleSCOPUS