Phylogenetic relationships of the Anisoptera (Insecta, Odonata) of Jeju Island, Korea, based on partial mitochondrial 16S ribosomal RNA sequences

摘要

The phylogenetic relationship of the suborder Anisoptera distributed on Jeju Island, Korea, was analyzed by comparing partial mitochondrial 16S ribosomal RNA (rRNA) gene sequences. The length of the partial mitochondrial 16S rRNA genes for the 27 species of the Anisoptera studied ranged from 405 to 421 base pairs (bp). No intra-genus length-variations were identified in the genera Anax and Orthetrum, while the genes of Somatochlora and Sympetrum displayed lengths of 411 to 412 and 406 to 411 bp, respectively. The GC content of the partial mitochondrial 16S rRNA gene ranged from 26.76% to 30.83%. A parsimony analysis of the unambiguously aligned mitochondrial 16S rRNA gene sequences from 28 species, including outgroup species, produced eight equally most parsimonious trees. The strict consensus tree had three large independent groups: group I (family Aeshnidae), group II (family Libellulidae), and group III (family Corduliidae). Interestingly, the eight species of the genus Sympetrum were clearly distinguishable from the other species. The strict consensus tree, based on the mitochondrial 16S rRNA gene sequences, contained monophyletic groups. These results concurred with previous studies published by several researchers that were based on morphological characteristics.