Covacin Catherine, Barker Stephen C
Parasitology Section, School of Molecular and Microbial Sciences, The University of Queensland, Brisbane, Australia.
Parasitol Res. 2007 Feb;100(3):479-85. doi: 10.1007/s00436-006-0309-6. Epub 2006 Oct 18.
We studied six species of lice from three of the four suborders of lice. These lice were infected with Wolbachia bacteria from supergroups A and F. This is the first report of an infection of supergroup F Wolbachia in lice. To date, Wolbachia from supergroup F have been found in filarial nematodes, Mansonella spp., and, rarely, in insects. We inferred the phylogeny of the Wolbachia from lice and representatives of all Wolbachia supergroups, with nucleotide sequences from the small subunit ribosomal RNA gene (SSU rRNA). There was no evidence of congruence between the taxon of louse and the Wolbachia bacteria that infect lice. There is no evidence that Wolbachia and their louse hosts co-evolved at least at the level of Wolbachia supergroups. We propose a novel mechanism for the horizontal transfer of Wolbachia between different species of lice from birds: transfer of Wolbachia during phoresis by hippoboscid flies.
我们研究了来自虱目四个亚目中三个亚目的六种虱子。这些虱子感染了A超群和F超群的沃尔巴克氏体细菌。这是首次关于F超群沃尔巴克氏体感染虱子的报告。迄今为止，F超群的沃尔巴克氏体已在丝虫线虫、曼森氏线虫属中发现，在昆虫中则很少见。我们利用小亚基核糖体RNA基因（SSU rRNA）的核苷酸序列，推断了来自虱子的沃尔巴克氏体以及所有沃尔巴克氏体超群代表的系统发育。没有证据表明虱子的分类群与感染虱子的沃尔巴克氏体细菌之间存在一致性。没有证据表明沃尔巴克氏体及其虱子宿主至少在沃尔巴克氏体超群水平上共同进化。我们提出了一种鸟类不同种类虱子之间沃尔巴克氏体水平转移的新机制：在虱蝇携带过程中沃尔巴克氏体的转移。
