Molecular phylogeny of soft ticks (Ixodida: Argasidae) inferred from mitochondrial genome and nuclear rRNA sequences

Burger, Thomas D., Shao, Renfu, Labruna, Marcelo B. and Barker, Stephen C. (2013) Molecular phylogeny of soft ticks (Ixodida: Argasidae) inferred from mitochondrial genome and nuclear rRNA sequences. Ticks and Tick-borne Diseases, 5 2: 195-207. doi:10.1016/j.ttbdis.2013.10.009

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Author Burger, Thomas D.
Shao, Renfu
Labruna, Marcelo B.
Barker, Stephen C.
Title Molecular phylogeny of soft ticks (Ixodida: Argasidae) inferred from mitochondrial genome and nuclear rRNA sequences
Journal name Ticks and Tick-borne Diseases   Check publisher's open access policy
ISSN 1877-959X
Publication date 2013-12-27
Year available 2013
Sub-type Article (original research)
DOI 10.1016/j.ttbdis.2013.10.009
Open Access Status Not Open Access
Volume 5
Issue 2
Start page 195
End page 207
Total pages 13
Place of publication Jena, Germany
Publisher Urban und Fischer Verlag
Language eng
Formatted abstract
The genus-level classification of soft ticks (Argasidae) is controversial. A previous phylogenetic analysis of morphological and developmental characters found that the genus Ornithodoros was paraphyletic and raised a new genus, Carios, for species previously in the genera Antricola, Argas, Ornithodoros, and Nothoaspis (Klompen and Oliver, 1993). Genetic analyses of soft ticks to date have been limited to 16S rRNA, which is not highly phylogenetically informative for this group. We sequenced the entire mitochondrial genomes of 7 species of soft ticks, and the partial mitochondrial genomes of a further 5 species of soft ticks. We used these sequences to test the genus-level classification of soft ticks. Our analyses strongly support a clade of Neotropical species (mostly bat-associated) within the subfamily Ornithodorinae. This clade, which we call Neotropical Ornithodorinae, has species from 2 genera, Antricola and Nothoaspis, and 2 subgenera, Ornithodoros (Alectorobius) and Ornithodoros (Subparmatus). We also addressed the phylogenetic position of Ornithodoros savignyi, the type species of the genus Ornithodoros. Our analysis strongly supports a clade consisting of Ornithodoros savignyi and 4 other Ornithodoros species: Or. brasiliensis, Or. moubata, Or. porcinus, and Or. rostratus. This clade, Ornithodoros sensu stricto, did not contain the Alectorobius and Subparmatus species, Or. (Alectorobius) fonsecai, Or. (Alectorobius) capensis, and Or. (Subparmatus) marinkellei, which in traditional classification schemes have been placed in the genus Ornithodoros. Our comparison of mitochondrial rRNA, nuclear rRNA, and mitochondrial genome analyses show that only mitochondrial genome sequences have the potential to resolve the controversial phylogenetic relationships within the major soft tick lineages, such as the taxonomic status of Carios sensu Klompen and Oliver (1993).
Keyword Argasidae
Mitochondrial genomes
18S rRNA
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Available online 27 December 2013

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2014 Collection
School of Chemistry and Molecular Biosciences
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Citation counts: TR Web of Science Citation Count  Cited 24 times in Thomson Reuters Web of Science Article | Citations
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