Wolbachia are present in Southern African scorpions and cluster with supergroup F
Wolbachia are present in Southern African scorpions and cluster with supergroup F
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DOI：
10.1007/s00284-007-9009-4
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发表时间：
2007-11-01
影响因子：
2.6
通讯作者：
Werren, John H.
中科院分区：
文献类型：
--
作者：
Baldo, Laura;Prendini, Lorenzo;Werren, John H.
在节肢动物螯肢亚门（包括蛛形纲）中，胞内细菌沃尔巴克氏体的存在和分布尚未得到广泛研究。在这里，我们报告在蝎子中发现沃尔巴克氏体。在后眼蝎属（南非穴居蝎）宿主物种中发现的五种菌株已通过多位点序列分型和沃尔巴克氏体表面蛋白进行了表征。系统发育分析表明，在超群F和高的遗传相关性之间的所有蝎子菌株作为一个潜在的传播宿主属的结果聚类。与A和B超群相比，F群是一个不常见的谱系，尽管它存在于广泛的宿主中（包括昆虫、丝虫线虫和现在的蛛形纲动物），并且跨越很大的地理区域（例如，北美、非洲、欧洲和澳大利亚）。它也没有重组的证据，并具有显着高于超组A和B的遗传多样性。总体而言，这种模式表明一个老辐射的F-菌株相对于A和B-菌株，其次是有限的水平传播宿主属和菌株之间的遗传通量减少。需要更广泛的超群F菌株采样来证实这种情况。
The presence and distribution of the intracellular bacteria Wolbachia in the arthropod subphylum Chelicerata (including class Arachnida) has not been extensively explored. Here we report the discovery of Wolbachia in scorpions. Five strains found in host species of the genus Opistophthalmus (Southern African burrowing scorpions) have been characterized by Multilocus Sequence Typing and by Wolbachia Surface Protein. Phylogenetic analyses indicate clustering in the supergroup F and a high genetic relatedness among all scorpion strains as a result of a potential transmission within the host genus. The F-group is an uncommon lineage compared to the A and B supergroups, although it is present in a broad range of hosts (including insects, filarial nematodes, and now arachnids) and across a large geographical area (e.g., North America, Africa, Europe, and Australia). It also shows no evidence of recombination and has a significantly higher genetic diversity than supergroup A and B. Overall, this pattern suggests an older radiation of F-strains with respect to A and B-strains, followed by limited horizontal transmission across host genera and reduced genetic flux among strains. A more extensive sampling of supergroup F-strains is required to confirm this scenario.