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Pancrustacean phylogeny: hexapods are terrestrial crustaceans and maxillopods are not monophyletic

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Regier, Jerome C., Shultz, Jeffrey W., Kambic, Robert E.·2005·Proceedings of the Royal Society B: Biological Sciences

Abstract

Recent molecular analyses indicate that crustaceans and hexapods form a clade (Pancrustacea or Tetraconata), but relationships among its constituent lineages, including monophyly of crustaceans, are controversial. Our phylogenetic analysis of three protein–coding nuclear genes from 62 arthropods and lobopods (Onychophora and Tardigrada) demonstrates that Hexapoda is most closely related to the crustaceans Branchiopoda (fairy shrimp, water fleas, etc.) and Cephalocarida + Remipedia, thereby making hexapods terrestrial crustaceans and the traditionally defined Crustacea paraphyletic. Additional findings are that Malacostraca (crabs, isopods, etc.) unites with Cirripedia (barnacles, etc.) and they, in turn, with Copepoda, making the traditional crustacean class Maxillopoda paraphyletic. Ostracoda (seed shrimp)—either all or a subgroup—is associated with Branchiura (fish lice) and likely to be basal to all other pancrustaceans. A Bayesian statistical (non–clock) 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.

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Research works printed but not linked: 33

  1. Abele L. G., 1989, Molecular evidence for inclusion of the phylum Pentastomida in the, Crustacea. Mol. Biol. Evol., 6, 685
  2. 10.1038/385627a0 · DOI · Paper page
  3. Benton M. J. (ed.) 1993 The fossil record 2. London: Chapman & Hall.
  4. 10.1038/33577 · DOI
  5. Dohle W., 2001, Are the insects terrestrial crustaceans? A discussion of some new facts and arguments and the proposal of the proper name `Tetraconata' for the monophyletic unit Crustacea þ Hexapoda, Annls Soc. Entomol. Fr., 37, 85
  6. 10.1111/j.1096-0031.2000.tb00352.x · DOI
  7. 10.1080/10635150390235485 · DOI · Paper page
  8. 10.1111/j.1558-5646.1985.tb00420.x · DOI · Paper page
  9. 10.1038/376165a0 · DOI · Paper page
  10. 10.1038/35093097 · DOI · Paper page
  11. 10.1093/oxfordjournals.molbev.a026342 · DOI
  12. 10.1093/bioinformatics/17.8.754 · DOI · Paper page
  13. 10.1038/35093090 · DOI · Paper page
  14. Jones D. T., 1992, The rapid generation of mutation data matrices from protein sequences, Comp. Appl. Biosci., 8, 275
  15. Kraus O., 2001, Myriapoda' and the ancestry of the Hexapoda, Annls Soc. Entomol. Fr., 37, 105
  16. 10.1098/rspb.2003.2631 · DOI
  17. 10.1078/0044-5231-00053 · DOI
  18. 10.1016/j.ympev.2003.07.013 · DOI · Paper page
  19. 10.1038/35054550 · DOI · Paper page
  20. 10.1007/s00239-003-2563-x · DOI
  21. 10.1073/pnas.032483599 · DOI
  22. 10.1186/1741-7007-2-1 · DOI · Paper page
  23. 10.1093/icb/38.6.918 · DOI
  24. 10.1006/mpev.2001.0956 · DOI
  25. 10.1603/0013-8746(2004)097[0411:POBHLA]2.0.CO;2 · DOI
  26. 10.1111/j.1744-7410.2004.tb00145.x · DOI
  27. 10.1073/pnas.41.1.61 · DOI
  28. Schram F. 1986 Crustacea. New York: Oxford University Press.
  29. Spears T. & Abele L. G. 1998 Crustacean phylogeny inferred from 18S rDNA. In Arthropod relationships (ed. R. A. Fortey & R. H. Thomas) pp. 169-187. London: Chapman & Hall. · DOI
  30. 10.1016/j.asd.2003.09.004 · DOI
  31. 10.1017/S0263593300006295 · DOI
  32. 10.2307/1547965 · DOI
  33. Zrzavy J. Hypsa V. & Vlásková M. 1998 Arthropod phylogeny: taxonomic congruence total evidence and conditional combination approaches to morphological and molecular data sets. In Arthropod relationships (ed. R. A. Fortey & R. H. Thomas) pp. 97-107. London: Chapman & Hall. · DOI

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Metadata

Authors
Regier, J. C., Shultz, J. W., & Kambic, R. E.
Venue
Proceedings of the Royal Society B: Biological Sciences
Published
2005-02-21
Volume
272
Issue
1561
Pages
395-401
ISSN
  • 0080-4649 (ISSN-L)
  • 0962-8452
  • 1471-2954
OpenAlex
W2076320557
Cited by
375
References
1
FWCI
29.08
Type
journal article
Language
en
Open access
green
Licence
royalsociety.org/journals/ethics-policies/data-sharing-mining/ (tdm)

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Regier, J. C., Shultz, J. W., & Kambic, R. E. (2005). Pancrustacean phylogeny: hexapods are terrestrial crustaceans and maxillopods are not monophyletic. Proceedings of the Royal Society B: Biological Sciences. https://doi.org/10.1098/rspb.2004.2917

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