A phylogenetic analysis of Taiwanese fanged dicroglossine frog, Limnonectes fujianensis (Anura, Ranidae), was conducted to examine its genetic diversification using sequence data from a portion of the mitochondrial DNA (mtDNA) cytochrome b sequences. We collected genetic data from 200 individuals at 23 localities in Taiwan and three localities in China. A neighbor-joining tree of 39 haplotypes revealed two clades in Taiwan and a clade in China, each showing restricted geographical distribution. The pattern of geographical divergence suggests a single invasion into Taiwan. Divergence times between clades were inferred using molecular clock tests. The population relationship of L. fujianensis between Taiwan and mainland China, and the phylogenetic relationships with its congeners, e.g., L. bannaensis, L. fragilis and L. kuhlii, were obtained and discussed.
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