Phylogenetic analysis based on 18s ribosomal RNA gene sequences supports the existence of class polyacanthocephala (acanthocephala)

Martín García-Varela, Michael P. Cummings, Gerardo Pérez Ponce De León, Scott L. Gardner, Juan P. Laclette

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

Members of phylum Acanthocephala are parasites of vertebrates and arthropods and are distributed worldwide. The phylum has traditionally been divided into three classes, Archiacanthocephala, Palaeacanthocephala, and Eoacanthocephala; a fourth class, Polyacanthocephala, has been recently proposed. However, erection of this new class, based on morphological characters, has been controversial. We sequenced the near complete 18S rRNA gene of Polyacanthorhynchus caballeroi (Polyacanthocephala) and Rhadinorhynchus sp. (Palaeacanthocephala); these sequences were aligned with another 21 sequences of acanthocephalans representing the three widely recognized classes of the phylum and with 16 sequences from outgroup taxa. Phylogenetic relationships inferred by maximum-likelihood and maximum-parsimony analyses showed Archiacanthocephala as the most basal group within the phylum, whereas classes Polyacanthocephala + Eoacanthocephala formed a monophyletic clade, with Palaeacanthocephala as its sister group. These results are consistent with the view of Polyacanthocephala representing an independent class within Acanthocephala.

Original languageEnglish (US)
Pages (from-to)288-292
Number of pages5
JournalMolecular Phylogenetics and Evolution
Volume23
Issue number2
DOIs
StatePublished - Jan 1 2002

Fingerprint

18S Ribosomal RNA
Acanthocephala
rRNA Genes
arthropod
RNA
parasite
vertebrate
ribosomal RNA
phylogenetics
nucleotide sequences
Arthropods
gene
phylogeny
Vertebrates
Parasites
arthropods
vertebrates
parasites
analysis
genes

Keywords

  • 18S rRNA
  • Acanthocephala
  • Polyacanthocephala
  • Polyacanthorhynchus caballeroi

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Molecular Biology
  • Genetics

Cite this

Phylogenetic analysis based on 18s ribosomal RNA gene sequences supports the existence of class polyacanthocephala (acanthocephala). / García-Varela, Martín; Cummings, Michael P.; De León, Gerardo Pérez Ponce; Gardner, Scott L.; Laclette, Juan P.

In: Molecular Phylogenetics and Evolution, Vol. 23, No. 2, 01.01.2002, p. 288-292.

Research output: Contribution to journalArticle

García-Varela, Martín ; Cummings, Michael P. ; De León, Gerardo Pérez Ponce ; Gardner, Scott L. ; Laclette, Juan P. / Phylogenetic analysis based on 18s ribosomal RNA gene sequences supports the existence of class polyacanthocephala (acanthocephala). In: Molecular Phylogenetics and Evolution. 2002 ; Vol. 23, No. 2. pp. 288-292.
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