The Comparison of β-Thymosin Homologues Among Metazoa Supports an Arthropod-Nematode Clade

@article{Manuel2000TheCO,
  title={The Comparison of $\beta$-Thymosin Homologues Among Metazoa Supports an Arthropod-Nematode Clade},
  author={Micha{\"e}l Manuel and Michael Kruse and Werner E. G. M{\"u}ller and Yannick Le Parco},
  journal={Journal of Molecular Evolution},
  year={2000},
  volume={51},
  pages={378-381}
}
Abstract. The definition of an Ecdysozoa clade among the protostomians, including all phyla with a regularly molted α-chitin-rich cuticle, has been one of the most provocative hypotheses to arise from recent investigations on animal phylogeny. Here we present evidence in favor of an arthropod-nematode clade, from the comparison of β-thymosin homologues among the Metazoa. Arthropods and nematodes share the absence of the highly conserved β-thymosin form found in all other documented bilaterian… Expand
The multimeric β‐thymosin found in nematodes and arthropods is not a synapomorphy of the Ecdysozoa
  • M. Telford
  • Biology, Medicine
  • Evolution & development
  • 2004
TLDR
It is shown that recently deposited sequence data reveal that the multimeric form is in fact a characteristic of all major subdivisions of the Metazoa and in the ecdysozoans. Expand
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The evidence that now conclusively supports the unique origin of these phyla is reviewed and the molecular and morphological evidence for a number of monophyletic groups within this superphylum is discussed. Expand
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Ecdysozoa : the relationship between Cycloneuralia and Panarthropoda
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The branching pattern within Ecdysozoa has been difficult to elucidate, but it now appears that priapulids and kinorhynchs form the earliest branching clade, followed by nematodes + nematomorphs, and finally the panarthropods, which suggests that Cycloneuralia is paraphyletic and that arthropods are the most derived of the ecdy sozoans. Expand
Genome-scale evidence of the nematode-arthropod clade
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The reliability of a monophyletic group clustering arthropods and nematodes was unequivocally accepted in datasets where traces of the long-branch attraction effect were removed and this is the first phylogenomic evidence to strongly support the 'moulting clade' hypothesis. Expand
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TLDR
Insects (arthropods) are genetically and evolutionarily closer to humans than to nematode worms, and the Ecdysozoa hypothesis is not supported. Expand
Current Understanding of Ecdysozoa and its Internal Phylogenetic Relationships.
Twenty years after its proposal, the monophyly of molting protostomes-Ecdysozoa-is a well-corroborated hypothesis, but the interrelationships of its major subclades are more ambiguous than isExpand
The nematode–arthropod clade revisited: phylogenomic analyses from ribosomal protein genes misled by shared evolutionary biases
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A new matrix of carefully curated EST and genome sequences for 25 ribosomal protein genes of the small subunit is built, with focus on new insect sequences in addition to the Diptera sequences generally used to represent the arthropods to address the debate about the recovery of Ecdysozoa in genomic data. Expand
Defining phyla: evolutionary pathways to metazoan body plans
TLDR
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Gastrotricha and metazoan phylogeny
TLDR
It is concluded that cycloneuralian and gastrotrich ancestors were multiciliate and had epidermal cilia covered by cuticular sheaths. Expand
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