High dynamics of rDNA cluster location in kissing bug holocentric chromosomes (Triatominae, Heteroptera)

Cytogenet Genome Res. 2012;138(1):56-67. doi: 10.1159/000341888. Epub 2012 Aug 18.

Abstract

In this paper, we determine by fluorescent in situ hybridization the variability in the chromosomal location of 45S rDNA clusters in 38 species belonging to 7 genera of the Triatominae subfamily, using a triatomine-specific 18S rDNA probe. Our results show a striking variability at the inter- and intraspecific level, never reported so far in holocentric chromosomes, revealing the extraordinary genomic dynamics that occurred during the evolution in this group of insects. Our results also demonstrate that the chromosomal position of rDNA clusters is an important marker to disclose chromosomal differentiation in species karyotypically homogenous in their chromosome number.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • DNA, Ribosomal / genetics*
  • Male
  • Multigene Family*
  • Triatominae / genetics*

Substances

  • DNA, Ribosomal