Author pages are created from data sourced from our academic publisher partnerships and public sources.
Share This Author
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. Expand
Ecdysozoan phylogeny and Bayesian inference: first use of nearly complete 28S and 18S rRNA gene sequences to classify the arthropods and their kin.
Better taxonomic resolution and recovery of established taxa were obtained here, especially with Bayesian inference, than in previous parsimony-based studies that used 18S rRNA sequences, and should revive interest in using rRNA genes to study arthropod and ecdysozoan relationships. Expand
Pancrustacean phylogeny: hexapods are terrestrial crustaceans and maxillopods are not monophyletic
- J. C. Regier, J. Shultz, R. E. Kambic
- Biology, Medicine
- Proceedings of the Royal Society B: Biological…
- 22 February 2005
A Bayesian statistical estimate of divergence times suggests a Precambrian origin for Pancrustacea (600 Myr ago or more), which precedes the first unambiguous arthropod fossils by over 60 Myr. Expand
A phylogenetic analysis of the arachnid orders based on morphological characters
- J. Shultz
- 1 June 2007
Results suggest that attempts to resolve specific nodes based on individual characters, lists of similarities, evolutionary scenarios, etc., are problematic, as they ignore broader impacts on homoplasy and analytical effects on non-target nodes. Expand
EVOLUTIONARY MORPHOLOGY AND PHYLOGENY OF ARAGHNIDA
- J. Shultz
- 1 March 1990
A cladistic analysis of the 11 Recent arachnid orders suggests that Arachnida is monophyletic and composed of two principal lineages, Micrura and Dromopoda. Expand
Resolving arthropod phylogeny: exploring phylogenetic signal within 41 kb of protein-coding nuclear gene sequence.
This study attempts to resolve relationships among and within the four basal arthropod lineages and to assess the widespread expectation that remaining phylogenetic problems will yield to increasing amounts of sequence data. Expand
Phylogenetic analysis of Myriapoda using three nuclear protein-coding genes.
The results of the present study indicate that taxon sample and sequence length alone do not readily explain the weakly supported resolution in the earlier study, which indicates that heterogeneity in phylogenetic signal provided by the authors' slowly evolving sequences is due to heterogeneity in the temporal structure of myriapod diversification. Expand
Morphology of locomotor appendages in Arachnida: evolutionary trends and phylogenetic implications
- J. Shultz
- 1 September 1989
Cladistic analysis suggests that Arachnida is monophyletic and that absence of extensor muscles is a primitive condition, and phylogenetic relationships among ‘extensorless’ groups cannot be resolved solely on the basis of appendicular characters. Expand
Molecular phylogeny of the major arthropod groups indicates polyphyly of crustaceans and a new hypothesis for the origin of hexapods.
A phylogeny of the arthropods was inferred from analyses of amino acid sequences derived from the nuclear genes encoding elongation factor-1 alpha and the largest subunit of RNA polymerase II using maximum-parsimony, neighbor-joining, and maximum-likelihood methods, providing support for a Hexapoda/Branchiopoda clade, thus arguing against the monophyly of the traditionally defined Atelocerata. Expand
Phylogenetic analysis of arthropods using two nuclear protein–encoding genes supports a crustacean + hexapod clade
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. Expand