Abstract:To study the biologic polymorphism of Taenia cestodes samples from Bai populations (Dali) in Yunnan by molecular genetic marker,mitochondrial DNA were extracted from the proglottis of adult Taenia cestodes strains and partial segments of the mitochondrial DNA Cytochrome B (mtDNA Cytb) sequence were amplified by polymerase chain reaction (PCR). Phylogenetic tree of species and geographical strains was constructed with the given mtDNA Cytb of T. solium,T. saginata and T. saginata asiatica in GenBank by DNAMAN software. The phylogenetic tree revealed that the Taenia cestodes samples (B1,B2,B5,B6) from Bai populations (Dali) in Yunnan province were close to Asia strain genetically,while they were far from T. saginata and even far from T. solium. Samples(B3,B4)were closed to T. solium but far from T. saginata and Taenia cestodes in Asia. It was apparent that the Taenia cestodes samples (B1,B2,B5,B6) from Bai populations (Dali) in Yunnan province belonged to Taenia cestodes in Asia and(B3,B4)belonged to T. solium. It also suggested that mtDNA Cytb sequence analysis could be applied to the study on biologic polymorphism of Taenia cestodes.
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