PMID: 12775521May 31, 2003Paper

The value of idiosyncratic markers and changes to conserved tRNA sequences from the mitochondrial genome of hard ticks (Acari: Ixodida: Ixodidae) for phylogenetic inference

Systematic Biology
A MurrellS C Barker

Abstract

Idiosyncratic markers are features of genes and genomes that are so unusual that it is unlikely that they evolved more than once in a lineage of organisms. Here we explore further the potential of idiosyncratic markers and changes to typically conserved tRNA sequences for phylogenetic inference. Hard ticks were chosen as the model group because their phylogeny has been studied extensively. Fifty-eight candidate markers from hard ticks (family Ixodidae) and 22 markers from the subfamily Rhipicephalinae sensu lato were mapped onto phylogenies of these groups. Two of the most interesting markers, features of the secondary structure of two different tRNAs, gave strong support to the hypothesis that species of the Prostriata (Ixodes spp.) are monophyletic. Previous analyses of genes and morphology did not strongly support this relationship, instead suggesting that the Prostriata is paraphyletic with respect to the Metastriata (the rest of the hard ticks). Parallel or convergent evolution was not found in the arrangements of mitochondrial genes in ticks nor were there any reversals to the ancestral arthropod character state. Many of the markers identified were phylogenetically informative, whereas others should be informative with st...Continue Reading

Citations

Jun 27, 2006·Vector Borne and Zoonotic Diseases·Scott M ShoneNelson Delgado
Dec 16, 2003·Proceedings of the National Academy of Sciences of the United States of America·Timothy A RawlingsRudiger Bieler
Oct 29, 2013·Annual Review of Entomology·Stephen L Cameron
Jan 15, 2008·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Jeffrey L Boore, Susan I Fuerstenberg

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