Phylogenetic analysis of the Prionini (Coleoptera: Cerambycidae: Prioninae) from China based on mitochondrial ribosomal RNA genes and Cytochrome oxidase I gene
| Autor: | Yan-Li E, Bo Feng, Li Chen, Kai-Di Zheng |
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| Rok vydání: | 2010 |
| Předmět: | |
| Zdroj: | Zootaxa. 2487:1 |
| ISSN: | 1175-5334 1175-5326 |
| Popis: | This is the first molecular systematic treatment of the Prionini. Here, three mitochondrial genes were partially sequenced from the Chinese Prionini to analyze phylogenetic relationships. Nucleotide compositions of three mitochondrial genes in the Chinese Prionini are biased toward A and T as in other insects. Ratios of transition vs. transversion (Ts/Tv) in 12S rRNA decrease with divergence time. However, ratios in 16S rRNA first increase with divergence time but decrease when divergence time is prolonged. Some nodes have poor bootstrap values or Bayesian posterior probabilities in phylogenetic trees reconstructed from single mitochondrial gene. In addition, some conflicting clades are found among phylogenetic trees based on a different gene. Therefore, a single mitochondrial gene provides limited phylogenetic signal and phylogenetic relationships based on a single gene sequence may be questionable. The Chinese Prionini is a monophyletic group. However, the genus Dorysthenes is paraphyletic. Dorysthenes fossatus should be transferred from Dorysthenes but the true status of D. fossatus is currently unknown. Species of Dorysthenes (excluding D. fossatus) constitute a monophyletic clade and there is close relationship between Dorysthenes paradoxus and Dorysthenes zivetta. |
| Databáze: | OpenAIRE |
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