Tags

Type your tag names separated by a space and hit enter

Arthropod phylogeny revisited, with a focus on crustacean relationships.
Arthropod Struct Dev. 2010 Mar-May; 39(2-3):88-110.AS

Abstract

Higher-level arthropod phylogenetics is an intensely active field of research, not least as a result of the hegemony of molecular data. However, not all areas of arthropod phylogenetics have so far received equal attention. The application of molecular data to infer a comprehensive phylogeny of Crustacea is still in its infancy, and several emerging results are conspicuously at odds with morphology-based studies. In this study, we present a series of molecular phylogenetic analyses of 88 arthropods, including 57 crustaceans, representing all the major lineages, with Onychophora and Tardigrada as outgroups. Our analyses are based on published and new sequences for two mitochondrial markers, 16S rDNA and cytochrome c oxidase subunit I (COI), and the nuclear ribosomal gene 18S rDNA. We designed our phylogenetic analyses to assess the effects of different strategies of sequence alignment, alignment masking, nucleotide coding, and model settings. Our comparisons show that alignment optimization of ribosomal markers based on secondary structure information can have a radical impact on phylogenetic reconstruction. Trees based on optimized alignments recover monophyletic Arthropoda (excluding Onychophora), Pancrustacea, Malacostraca, Insecta, Myriapoda and Chelicerata, while Maxillopoda and Hexapoda emerge as paraphyletic groups. Our results are unable to resolve the highest-level relationships within Arthropoda, and none of our trees supports the monophyly of Myriochelata or Mandibulata. We discuss our results in the context of both the methodological variations between different analyses, and of recently proposed phylogenetic hypotheses. This article offers a preliminary attempt to incorporate the large diversity of crustaceans into a single molecular phylogenetic analysis, assessing the robustness of phylogenetic relationships under varying analysis parameters. It throws into sharp relief the relative strengths and shortcomings of the combined molecular data for assessing this challenging phylogenetic problem, and thereby provides useful pointers for future studies.

Authors+Show Affiliations

Institute for Animal Ecology and Cell Biology, University of Veterinary Medicine Hannover, Bünteweg 17d, Hannover, Germany. stefan.koenemann@tiho-hannover.deNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

19854296

Citation

Koenemann, Stefan, et al. "Arthropod Phylogeny Revisited, With a Focus On Crustacean Relationships." Arthropod Structure & Development, vol. 39, no. 2-3, 2010, pp. 88-110.
Koenemann S, Jenner RA, Hoenemann M, et al. Arthropod phylogeny revisited, with a focus on crustacean relationships. Arthropod Struct Dev. 2010;39(2-3):88-110.
Koenemann, S., Jenner, R. A., Hoenemann, M., Stemme, T., & von Reumont, B. M. (2010). Arthropod phylogeny revisited, with a focus on crustacean relationships. Arthropod Structure & Development, 39(2-3), 88-110. https://doi.org/10.1016/j.asd.2009.10.003
Koenemann S, et al. Arthropod Phylogeny Revisited, With a Focus On Crustacean Relationships. Arthropod Struct Dev. 2010 Mar-May;39(2-3):88-110. PubMed PMID: 19854296.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Arthropod phylogeny revisited, with a focus on crustacean relationships. AU - Koenemann,Stefan, AU - Jenner,Ronald A, AU - Hoenemann,Mario, AU - Stemme,Torben, AU - von Reumont,Björn M, Y1 - 2009/11/05/ PY - 2009/06/10/received PY - 2009/10/06/revised PY - 2009/10/14/accepted PY - 2009/10/27/entrez PY - 2009/10/27/pubmed PY - 2010/7/16/medline SP - 88 EP - 110 JF - Arthropod structure & development JO - Arthropod Struct Dev VL - 39 IS - 2-3 N2 - Higher-level arthropod phylogenetics is an intensely active field of research, not least as a result of the hegemony of molecular data. However, not all areas of arthropod phylogenetics have so far received equal attention. The application of molecular data to infer a comprehensive phylogeny of Crustacea is still in its infancy, and several emerging results are conspicuously at odds with morphology-based studies. In this study, we present a series of molecular phylogenetic analyses of 88 arthropods, including 57 crustaceans, representing all the major lineages, with Onychophora and Tardigrada as outgroups. Our analyses are based on published and new sequences for two mitochondrial markers, 16S rDNA and cytochrome c oxidase subunit I (COI), and the nuclear ribosomal gene 18S rDNA. We designed our phylogenetic analyses to assess the effects of different strategies of sequence alignment, alignment masking, nucleotide coding, and model settings. Our comparisons show that alignment optimization of ribosomal markers based on secondary structure information can have a radical impact on phylogenetic reconstruction. Trees based on optimized alignments recover monophyletic Arthropoda (excluding Onychophora), Pancrustacea, Malacostraca, Insecta, Myriapoda and Chelicerata, while Maxillopoda and Hexapoda emerge as paraphyletic groups. Our results are unable to resolve the highest-level relationships within Arthropoda, and none of our trees supports the monophyly of Myriochelata or Mandibulata. We discuss our results in the context of both the methodological variations between different analyses, and of recently proposed phylogenetic hypotheses. This article offers a preliminary attempt to incorporate the large diversity of crustaceans into a single molecular phylogenetic analysis, assessing the robustness of phylogenetic relationships under varying analysis parameters. It throws into sharp relief the relative strengths and shortcomings of the combined molecular data for assessing this challenging phylogenetic problem, and thereby provides useful pointers for future studies. SN - 1873-5495 UR - https://www.unboundmedicine.com/medline/citation/19854296/Arthropod_phylogeny_revisited_with_a_focus_on_crustacean_relationships_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1467-8039(09)00055-3 DB - PRIME DP - Unbound Medicine ER -