Nuclear gene sequences resolve species phylogeny and mitochondrial introgression in Leptocarabus beetles showing trans-species polymorphisms

  • Zhang A
  • Sota T
  • 57

    Readers

    Mendeley users who have this article in their library.
  • 17

    Citations

    Citations of this article.

Abstract

We studied the phylogenetic relationships among Japanese Leptocarabus ground beetles, which show extensive trans-species polymorphisms in mitochondrial gene genealogies. Simultaneous analysis of combined nuclear data with partial sequences from the long-wavelength rhodopsin, wingless, phosphoenolpyruvate carboxykinase, and 28S rRNA genes resolved the relationships among the five species, although separate analyses of these genes provided topologies with low resolution. For both the nuclear gene tree resulting from the combined data from four genes and a mitochondrial cytochrome oxidase subunit I (COI) gene tree, we applied a Bayesian divergence time estimation using a common calibration method to identify mitochondrial introgression events that occurred after speciation. Three mitochondrial lineages shared by two or three species were likely subject to introgression due to interspecific hybridization because the coalescent times for these lineages were much shorter than the corresponding speciation times estimated from nuclear gene sequences. We demonstrated that when species phylogeny is fully resolved with nuclear gene sequence data, comparative analysis of nuclear and mitochondrial gene trees can be used to infer introgressive hybridization events that might cause trans-species polymorphisms in mitochondrial gene trees. © 2007 Elsevier Inc. All rights reserved.

Author-supplied keywords

  • Carabidae
  • Introgressive hybridization
  • Mitochondrial DNA
  • Nuclear gene
  • Phylogeny
  • Species relationship

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Authors

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free