Phylogenetic relationships of platyhelminthes based on 18S ribosomal gene sequences.

@article{Campos1998PhylogeneticRO,
  title={Phylogenetic relationships of platyhelminthes based on 18S ribosomal gene sequences.},
  author={A. Campos and M. P. Cummings and J. L. Reyes and J. Laclette},
  journal={Molecular phylogenetics and evolution},
  year={1998},
  volume={10 1},
  pages={
          1-10
        }
}
Key MethodNucleotide sequences of 18S ribosomal RNA from 71 species of Platyhelminthes, the flatworms, were analyzed using maximum likelihood, and the resulting phylogenetic trees were compared with previous phylogenetic hypotheses. Analyses including 15 outgroup species belonging to eight other phyla show that Platyhelminthes are monophyletic with the exception of a sequence putatively from Acoela sp., Lecithoepitheliata, Polycladida, Tricladida, Trematoda (Aspidobothrii + Digenea), Monogenea, and…Expand
A Molecular Test of Platyhelminth Phylogeny: Inferences from Partial 28S rDNA Sequences
TLDR
Nucleotide sequences of the region extending from the D3 to the D6 expansion segments of the 28S rDNA gene were used to reconstruct evolutionary relationships within the Platyhelminthes, and it is tentatively concluded that the immediate sister group of Neodermata is Fecampiida. Expand
The interrelationships of all major groups of Platyhelminthes: phylogenetic evidence from morphology and molecules
TLDR
It is stressed that morphological and molecular data in some respects lead to contradictory results, for instance concerning the position of the Fecampiidae/Urastoma/Ichthyophaga and the relative position ofThe Lecithoepitheliata. Expand
Phylogeny of Polycladida (Platyhelminthes) based on mtDNA data
TLDR
The results suggest that, within Acotylea, the prostatoid organs of Discocelis may have been derived from a prostatic vesicle, and the genus Hoploplana could be included in Stylochoidea. Expand
The interrelationships of metazoan parasites: a review of phylum-and higher-level hypotheses from recent morphological and molecular phylogenetic analyses.
  • J. Zrzavy
  • Biology, Medicine
  • Folia parasitologica
  • 2001
TLDR
Phylogeny of seven groups of metazoan parasitic groups is reviewed, based on both morphological and molecular data, and the lack of relevant information about the enigmatic ectoproctan parasite Buddenbrockia is emphasised. Expand
The phylogenetic position of the Prolecithophora (Rhabditophora, ‘Platyhelminthes’)
TLDR
The analyses reveal the existence of a strongly supported clade consisting of Prolecithophora + Tricladida + the amended Fecampiida, and the name Adiaphanida is proposed for this clade. Expand
Molecular phylogeny of the Platyhelminthes
TLDR
Phylum-wide analyses based on complete ribosomal and other nuclear genes addressed to answer the main issues facing systematics and phylogeny of Platyhelminthes are reviewed. Expand
Phylogeny of the monopisthocotylea and Polyopisthocotylea (Platyhelminthes) inferred from 28S rDNA sequences.
TLDR
Each of these families was found to be monophyletic and their monophyly was supported by high bootstrap values in neighbour joining and maximum parsimony, and within the Polyopisthocotylea, the polystomatids were the sister-group of all others. Expand
Utility of complete large and small subunit rRNA genes in resolving the phylogeny of the Neodermata (Platyhelminthes): implications and a review of the cercomer theory
TLDR
The Monogenea and Proseriata were resolved as monophyletic, rejecting previous suggestions of paraphyly based on SSU and partial LSU data sets and thus supporting widely accepted morphological synapomorphies and highlighting problems associated with the ‘cercomer theory’. Expand
A molecular phylogenetic framework for the phylum Ctenophora using 18S rRNA genes.
TLDR
The first molecular phylogenetic analysis of the phylum Ctenophora, by use of 18S ribosomal RNA sequences from most of the major taxa, suggests that the ctenophores form a distinct monophyletic group that is most closely related to the cnidarians. Expand
Elongation factor 1-alpha sequences do not support an early divergence of the Acoela.
TLDR
Phylogenetic analyses of EF1a sequences show that the acoel sequences branch within the Platyhelminthes, in opposition to the 18S rDNA data, but they do not confirm the early divergence of the Acoela. Expand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 85 REFERENCES
Contributions to the phylogeny of Platyhelminthes based on partial sequencing of 18S ribosomal DNA.
TLDR
Partial sequencing of the 18S ribosomal DNA gene was used to test several hypotheses concerning the phylogenetic relationships of Platyhelminthes and the following conclusions were reached: the Neodermata is monophyletic. Expand
Enzyme electrophoresis, 18S rRNA sequences, and levels of phylogenetic resolution among several species of freshwater planarians (Platyhelminthes, Tricladida, Paludicola)
TLDR
Data used to address unresolved phylogenetic and taxonomic problems with this group at several different levels ranging from phylum to subgenus suggest that the Platyhelminthes are monophyletic, being a sister-group to the other Eubilateria. Expand
The phylogenetic relationships of Kronborgia (Platyhelminthes, Fecampiida) based on comparison of 18S ribosomal DNA sequences.
TLDR
Morphological, including ultrastructural, characters and DNA data do not support a close relationship of fecampiids with any other platyhelminth taxon, although the DNA sequence analysis provides some evidence that the Acoela and Tricladida are closest. Expand
Phylogenetic position of phylum Nemertini, inferred from 18S rRNA sequences: molecular data as a test of morphological character homology.
TLDR
The molecular inference corroborates recent morphological character analyses that reveal no synapomorphies of nemertines and flatworms but instead suggest that the circulatory system and rhynchocoel of nemERTines are homologous to coelomic cavities of protostome coelomates, thus supporting the corresponding hypothesis that nemertine belong within a protostomate-coelomate clade. Expand
18S rRNA sequences and phylogeny of platyhelminthes
TLDR
This study presents 18S rRNA partial sequences from several species belonging to the phylum Platyhelminthes, including parasitic groups and free-living forms, and supports the basal position of the Platy Helmetinthes in the radiation of Eubilateria, and rejects hypotheses of a secondary derivation of Platy Helminthes from the Eucoelomates. Expand
Conflicting phylogenetic hypotheses for the parasitic platyhelminths tested by partial sequencing of 18S ribosomal RNA.
TLDR
Partial sequencing of the 18S ribosomal RNA in nine parasitic and one free-living species of platyhelminth was used to test hypotheses on the phylogenetic relationships among the major groups, with a very close association between the gyrocotylideans and monopisthocotylidesans. Expand
The phylogenetic position of the Aspidobothrea within the parasitic flatworms inferred from ribosomal RNA sequence data.
  • D. Blair
  • Biology, Medicine
  • International journal for parasitology
  • 1993
TLDR
There is evidence that the Monogenea is a paraphyletic group, although more data are needed to confirm this possibility. Expand
Phylogeny of parasitic Platyhelminthes: a critical study of synapomorphies proposed on the basis of the ultrastructure of spermiogenesis and spermatozoa
TLDR
A more precise definition of spermiogenesis, based on a detailed description, is proposed in this paper and avoids homoplasies and introduces convergences with several other groups of nonparasitic Platyhelminthes. Expand
Phylogenetic position of Acoel turbellarians inferred from partial 18S rDNA sequences.
TLDR
The deduced phylogenetic tree suggests that the three groups examined form discrete and separate entities, and suggests an earlier emergence of the Acoel turbellarians than the other platyhelminths. Expand
Phylogenetic position of Heronimus mollis (Digenea): evidence from 18S ribosomal RNA.
TLDR
Analysis of nucleotide sequence of the 18S ribosomal RNA gene of Heronimus mollis and the skewness of the frequency distribution of the lengths of 100,000 trees sampled randomly from the set of all possible trees indicate that 18S rRNA sequences are valuable for phylogenetic inference in the Digenea. Expand
...
1
2
3
4
5
...