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Corpus Systématique Animale

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5S rRNA sequences of 12 species of flatworms: implications for the phylogeny of the Platyhelminthes

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Springer (journals)
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Mots-clés d'auteur
  • 5S rRNA
  • Platyhelminthes
  • Turbellaria
  • parasitic flatworms
  • phylogeny
Nom du fichier dans la ressource
  • B. I. Joffe 1
  • K. M. Valiejo Roman 2
  • V. Ya. Birstein 3
  • A. V. Troitsky 2
  • 1) Zoological Institute RAN, 199034, St-Petersburg, Russia
  • 2) A. N. Belozersky Institute of Physico-Chemical Biology, Moscow State University, 119899, Moscow, Russia
  • 3) N. K. Koltzov Institute of Developmental Biology RAN, 117334, Moscow, Russia

5S rRNAs from 12 species of free living and parasitic platyhelminthes were sequenced. In the phylogenetic analysis, attention was focused on the statistical estimates of the trees corresponding to existing phylogenetic hypotheses. The available 5S rRNA data agree well with widely accepted views on the relationships between the Acoela, Polycladida, Tricladida, and Neorhabdocoela; our analysis of the published 18S rRNA sequences also demonstrated good correspondence between these views and molecular data. With available 5S rRNA data the hypothesis that the dalyellioid turbellarians is the sister group of the Neodermata is less convincing than the hypotheses proposing the Neodermata as the sister group of the Neorhabdocoela, or of the Seriata, or of the branch uniting them. A relatively low rate of base replacement in parasitic flatworms, probably, accounts for the uncertain position of the Neodermata, while a relatively high rate in planarians may explain a relatively too early divergence of the Tricladida in several published phylogenetic trees constructed from various rRNA data.

Catégories Science-Metrix
  • 1 - natural sciences
  • 2 - biology
  • 3 - marine biology & hydrobiology
Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
  • 4 - invertebres
Catégories Scopus
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Aquatic Science
Catégories WoS
  • 1 - science ; 2 - marine & freshwater biology
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