Bargues M.D. auteur aut IRD Marcilla A. auteur aut IRD Ramsey J.M. auteur aut IRD Dujardin Jean-Pierre auteur aut IRD Schofield C.J. auteur aut IRD Mas-Coma S. auteur aut IRD text journalArticle eng text/pdf reformatted digital access The evolutionary history and times of divergence of triatomine bug lineages are estimated from molecular clocks inferred from nucleotide sequences of the small subunit SSU (18S) and the second internal transcribed spacer (ITS-2) of the nuclear ribosomal DNA of these reduviids. The 18S rDNA molecular clock rate in Triatominae, and Prosorrhynchan Hemiptera in general, appears to be of 1.8% per 100 million years (my). The ITS-2 molecular clock rate in Triatominae is estimated to be around 0.4-1% per 1 my, indicating that ITS-2 evolves 23-55 times faster than 18S rDNA. Inferred chronological data about the evolution of Triatominae fit well with current hypotheses on their evolutionary histories, but suggest reconsideration of the current taxonomy of North America species complexes. (Résumé d'auteur) specialized MALADIE DE CHAGAS INSECTE NUISIBLE VECTEUR EVOLUTION TAXONOMIE PHYLOGENIE ANALYSE GENETIQUE ETUDE COMPARATIVE GENE 18S ITS2 SPACER.INTERNAL TRANSCRIBED SPACER HEURE MOLECULAIRE MEXIQUE NICARAGUA 052GLOTRY 95 4 567-573 2000 0074-0276 https://www.documentation.ird.fr/hor/fdi:010022772 0074-0276 [F B010022772] https://www.documentation.ird.fr/hor/fdi:010022772 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/pleins_textes_7/b_fdi_57-58/010022772.pdf IRD - Base Horizon / Pleins textes 2000-08-21 2021-05-20 fdi:010022772 fre