Arthropod phylogeny based on eight molecular loci and morphology

  title={Arthropod phylogeny based on eight molecular loci and morphology},
  author={Gonzalo Giribet and Gregory D. Edgecombe and Ward C. Wheeler},
The interrelationships of major clades within the Arthropoda remain one of the most contentious issues in systematics, which has traditionally been the domain of morphologists. A growing body of DNA sequences and other types of molecular data has revitalized study of arthropod phylogeny and has inspired new considerations of character evolution. Novel hypotheses such as a crustacean–hexapod affinity were based on analyses of single or few genes and limited taxon sampling, but have received… 

Testing the new animal phylogeny: a phylum level molecular analysis of the animal kingdom.

Phylogenetic analysis of mitochondrial protein coding genes confirms the reciprocal paraphyly of Hexapoda and Crustacea

The finding of the reciprocal paraphyly of Hexapoda and Crustacea suggests an evolutionary scenario in which the acquisition of the hexapod condition may have occurred several times independently in lineages descending from different crustacean-like ancestors, possibly as a consequence of the process of terrestrialization.

The phylogenetic position of early hexapod lineages: morphological data contradict molecular data

It appears that in the present state of the analytical strategies, hypotheses concerning arthropod phylogenies obtained from morphological and developmental criteria and combined analyses involving molecular and morphological data provide more reliable results than those generated by molecular information alone.

Molecular phylogeny of the Calanoida (Crustacea: Copepoda).

On bivalve phylogeny: a high‐level analysis of the Bivalvia (Mollusca) based on combined morphology and DNA sequence data

Abstract. Bivalve classification has suffered in the past from the crossed-purpose discussions among paleontologists and neontologists, and many have based their proposals on single character

Arthropod relationships revealed by phylogenomic analysis of nuclear protein-coding sequences

This work presents strongly supported results from likelihood, Bayesian and parsimony analyses of over 41 kilobases of aligned DNA sequence from 62 single-copy nuclear protein-coding genes from 75 arthropod species, providing a statistically well-supported phylogenetic framework for the largest animal phylum.

Phylogenomic interrogation of arachnida reveals systemic conflicts in phylogenetic signal.

It is shown that phylogenetic signal for the monophyly of Arachnida is restricted to the 500 slowest-evolving genes in the data set, and that outgroup selection without regard for branch length distribution exacerbates long-branch attraction artifacts and does not mitigate gene-tree discordance, regardless of high gene representation for outgroups that are model organisms.

The colonization of land by animals: molecular phylogeny and divergence times among arthropods

The consistent support for a close relationship between myriapods and chelicerates, using mitochondrial and nuclear genes and different methods of analysis, suggests that arthropods may have adapted to the terrestrial environment relatively late in their evolutionary history.



Ribosomal DNA phylogeny of the major extant arthropod classes and the evolution of myriapods

Using nuclear ribosomal gene sequences for constructing a molecular phylogeny, this work provides strong evidence that the crustaceans and not the myriapods should be considered to be the sister group of the insects.

Mitochondrial Genes Collectively Suggest the Paraphyly of Crustacea with Respect to Insecta

A phylogenetic analysis using amino acid sequences of the seven corresponding polypeptides supports a sister-taxon status for mollusks–annelid and arthropods and suggests that crustaceans are paraphyletic with respect to insects.

Phylogenetic analysis of arthropods using two nuclear protein–encoding genes supports a crustacean + hexapod clade

  • J. ShultzJ. C. Regier
  • Biology
    Proceedings of the Royal Society of London. Series B: Biological Sciences
  • 2000
Results from maximum–parsimony and maximum–likelihood analyses strongly supported the existence of a Crustacea+ Hexapoda clade (Pancrustacea) over a Myriapoda + Hexapod clade(s) (Atelocerata) and the apparent incompatibility between the molecule–based Pancrustacea hypothesis and morphology–based AtelOCerata hypothesis is discussed.

Molecular Phylogeny of Arthropods and the Significance of the Cambrian “Explosion” for Molecular Systematics

Two models are proposed to explain incongruity in the attempt to resolve arthropod phylogeny using the amino acid sequence of elongation factor-1α, which fails to establish relationships among most higher-level groups, although it does recover more recently derived clades.

First molecular evidence for the existence of a Tardigrada + Arthropoda clade.

The results obtained represent the first molecular evidence for a Tardigrada + Arthropoda clade and indicate the need to review those obtained solely on morphological characters.

Histone H3 and U2 snRNA DNA sequences and arthropod molecular evolution

Combined (‘spliced’) analysis of both genes improves topological congruence with morphological groupings relative to that of either partition, suggesting that the class of snRNAs may provide several phylogenetically useful genes.


Ribosomal and ubiquitin protein coding sequence data are generated from 20 arthropods and five close relatives combined with morphological characters derived from the literature to approach arthropod phylogenetics from the perspective of total evidence.

Evidence for a clade of nematodes, arthropods and other moulting animals

The results suggest that ecdysis (moulting) arose once and support the idea of a new clade, Ecdysozoa, containing moulting animals: arthropods, tardigrades, onychophorans, nematodes, Nematomorphs, kinor-hynchs and priapulids.

A Review of Arthropod Phylogeny: New Data Based on Ribosomal DNA Sequences and Direct Character Optimization

The high level of sequence heterogeneity in the 18S rRNA gene makes placement of certain taxa with “unusual” sequences difficult and underscores the necessity of combining ribosomal gene data with other sources of information.