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First record of Wolbachia in South American terrestrial isopods : prevalence and diversity in two species of Balloniscus (Crustacea, Oniscidea)

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First record of Wolbachia in South American terrestrial isopods : prevalence and diversity in two species of Balloniscus (Crustacea, Oniscidea)

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Título First record of Wolbachia in South American terrestrial isopods : prevalence and diversity in two species of Balloniscus (Crustacea, Oniscidea)
Autor Almerão, Maurício Pereira
Fagundes, Nelson Jurandi Rosa
Araujo, Paula Beatriz de
Verne, Sébastien
Grandjean, Frédéric
Bouchon, Didier
Araujo, Aldo Mellender de
Abstract Wolbachia are endosymbiotic bacteria that commonly infect arthropods, inducing certain phenotypes in their hosts. So far, no endemic South American species of terrestrial isopods have been investigated for Wolbachia infection. In this work, populations from two species of Balloniscus (B. sellowii and B. glaber) were studied through a diagnostic PCR assay. Fifteen new Wolbachia 16S rDNA sequences were detected. Wolbachia found in both species were generally specific to one population, and five populations hosted two different Wolbachia 16S rDNA sequences. Prevalence was higher in B. glaber than in B. sellowii, but uninfected populations could be found in both species. Wolbachia strains from B. sellowii had a higher genetic variation than those isolated from B. glaber. AMOVA analyses showed that most of the genetic variance was distributed among populations of each species rather than between species, and the phylogenetic analysis suggested that Wolbachia strains from Balloniscus cluster within Supergroup B, but do not form a single monophyletic clade, suggesting multiple infections for this group. Our results highlight the importance of studying Wolbachia prevalence and genetic diversity in Neotropical species and suggest that South American arthropods may harbor a great number of diverse strains, providing an interesting model to investigate the evolution of Wolbachia and its hosts.
Contido em Genetics and molecular biology. Ribeirão Preto. Vol. 35, n. 4 supl (Dec. 2012), p. 980-989
Assunto Balloniscus glaber
Balloniscus sellowii
Isopodos terrestres
Wolbachia
[en] diversity
[en] Oniscidea
[en] prevalence
[en] South America
[en] Wolbachia
Origem Nacional
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/87814
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