Phylogenetic relationships of Schistosoma japonicum in evolution

Abstract Purpose: In this research, I researched the phylogenetic relationships of Sschistosoma sinensium and Schistosoma japonicum, as well as relationships of East Asia Schistosoma japonicum and Southeast Asia S. japonicum. Results: The results of nucleotide BLAST showed that Sichuan S. sinensium AF465913.1 shared 72.29% identity with Jiangxi S. japonicum FJ852203.1. E-value is < 0.01. Schistosoma sinesium established S. japonicum in Jiangxi. Jiangxi S. japonicum spread to other parts of China, Japan, Southeast Asia, and Taiwan. It is close to, for example, S. japonicum of Anhui Tongling, Hunan Changde, and Indonesia. In ND1 gene sequences, for example, Jiangxi S. japonicum KP793763.1 shared 100% identity with Hunan Chande S. japonicum KP793756.1, 99.89% identity with Anhui Tonling S. japonicum KP793747.1 and Indonesia S. japonicum KP793779.1. E-values = 0.0. Commonly, Indonesia S. japonicum derived from China, which include Anhui Guichi, Anhui Tongling, Hunan Changde, and Hunan Yueyang. Schistosoma japonicum is close to each other in genetic relationships. Conclusions: Schistosoma japonicum spread from Jiangxi to other parts of East Asia and to Southeast Asia. The parasite has close genetic relationships.