科研之友
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摘要
The phylogenetic relationships among aphids (Hemiptera: Aphididae), were studied using fragments of cytochrome c oxidase I (COI) and 12S rRNA genes. The majority of species, belonged to the subfamily Aphidinae, however members of the Chaitophorinae, Lachninae, Calaphidinae and Eriosomatinae subfamilies were also included. Genetic divergence ranged from 1.3% to 15.7% featuring Cinara tujafilina (Lachninae) as the most divergent species. Phylogenetic trees produced by Maximum Parsimony (MP) and Bayesian Inference analyses (BI) exhibited a similar topology, which to some extent, is in agreement with the systematic classification of aphids. Cinara tujafilina was the most basal group in the phylogram, indicating an early separation of Lachninae and a formation of another lineage distinct from the other aphids. The Aphidininae species formed the largest group in the phylogram; however, the clustering of Pterocomma pilosum with Cavariella aegopodii and Capitophorus elaeagni questions the monophyly of Macrosiphini and the systematic status of Pterocommatini. Within the Aphidini tribe, the Aphidina species appear to be monophyletic. On the contrary, the monophyly of Rhopalosiphum was not resolved. Aphis nerii and Toxoptera aurantii, were positioned as basal groups in the Aphidini-Aphidina cluster, while, within Aphis, several species with similar morphology were grouped together. Finally, the Macro-siphini were classified according to their genus with the exception of Myzus which appears to be paraphyletic. Our results corroborate the findings of previous studies although there are still several issues requiring to be explored.
- 出版日期2013
