TY - JOUR T1 - Comparative Analysis of 18S and 28S rDNA Sequences of Schistosoma japonicum from Mainland China, the Philippines and Japan AU - Zhao, G.H. AU - Zou, F.C. AU - Lin, R.Q. AU - Weng, Y.B. AU - Sugiyama, H. AU - Chen, F. AU - Li, J. AU - Song, H.Q. AU - Zhu, X.Q. AU - Yuan, Z.G. JO - Journal of Animal and Veterinary Advances VL - 10 IS - 15 SP - 2010 EP - 2015 PY - 2011 DA - 2001/08/19 SN - 1680-5593 DO - javaa.2011.2010.2015 UR - https://makhillpublications.co/view-article.php?doi=javaa.2011.2010.2015 KW - phylogenetic analysis KW -18S rDNA KW -28S rDNA KW -Philippines KW -mainland China KW -Schistosoma japonicum KW -Japan AB - In the present study, a portion of the 18S and 28S ribosomal DNA (rDNA) sequences of 35 Schistosoma japonicum isolates representing three geographical strains from mainland China, the Philippines and Japan were amplified and compared and phylogenetic relationships were also reconstructed by Unweighted Pair-Group Method with Arithmetic averages (UPGMA) using combined 18S and 28S rDNA sequences as well as the corresponding sequences of other species belonging to the Schistosoma genus available in the public database. The results indicated that the partial 18S and 28S rDNA sequences of all S. japonicum isolates were 745 and 618 bp, respectively and displayed low genetic variation among S. japonicum strains and isolates. Phylogenetic analysis revealed that the combined 18S and 28S rDNA sequences were not able to distinguish S. japonicum isolates from three geographical origins but provided an effective molecular marker for the inter-species phylogenetic analysis and differential identification of different Schistosoma species. ER -