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Phylogenetic relationships within Oweniidae Rioja (Polychaeta, Annelida)

Abstract

The Oweniidae consist of five genera of tubiculous polychaetes occurring in all oceans from tropical topolarareas: Owenia Delle Chiaje, 1842, Myriochele Malmgren, 1867, Galathowenia Kirkegaard, 1959, Myriowenia Hartrnan, 1960 and Myrioglobula Hartrnan, 1967. The group is regarded as monophyletic based on the presence of dense fields of bidentate neuropodial hooks. Fourteen species were submitted to a cladistic analysis in PAUP 3.1.1 with the usage of 19 morphological characters.The taxonomic status of the ingroup taxa could be evaluated and it has been found that: (1) Owenia, Myriowenia and Myrioglobula are monophyletic, and (2) Myriochele, and Galathowenia are both paraphyletic taxa.

Polychaeta; Oweniidae; phylogeny; systematics


Phylogenetic relationships within Oweniidae Rioja (Polychaeta, Annelida)

Gustavo Sene-Silva

Departamento de Zoologia, Universidade Federal do Paraná. Caixa Postal 19020, 81531-980 Curitiba, Paraná, Brasil. E-mail: gssilva@bio.ufpr.br Former address: Zoomorphologie und Systematik (Abt. 2), Fakultät für Biologie, Universität Bielefeld, Germany

ABSTRACT

The Oweniidae consist of five genera of tubiculous polychaetes occurring in all oceans from tropical topolarareas: Owenia Delle Chiaje, 1842, Myriochele Malmgren, 1867, Galathowenia Kirkegaard, 1959, Myriowenia Hartrnan, 1960 and Myrioglobula Hartrnan, 1967. The group is regarded as monophyletic based on the presence of dense fields of bidentate neuropodial hooks. Fourteen species were submitted to a cladistic analysis in PAUP 3.1.1 with the usage of 19 morphological characters.The taxonomic status of the ingroup taxa could be evaluated and it has been found that: (1) Owenia, Myriowenia and Myrioglobula are monophyletic, and (2) Myriochele, and Galathowenia are both paraphyletic taxa.

Key words: Polychaeta, Oweniidae, phylogeny, systematics

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ACKNOWLEDGMENTS. The author wishes to specially thank Prof. Dr. Dalton S. Amorim and Prof. Dr. Martin L. Christoffersen for their substantial participation on the theoretical background in this project and with the bibliography. J arn indebted to Prof. Dr. Thomas Bartolomaeus, Dr. Frederik Pleijel and an anonymous reviser for their brilliant comments on the manuscript. Prof. Bartolomaeus is also gratefully acknowledged for the kind allowance for the usage of his technical resources Dr. Harald Hausen and Prof. Dr. Antônio Carlos Marques gave very helpful technical support with the computer programs. This study was supported by FAPESP (Proc. 97/06496-3) and CAPES.

Received in 11.III.2001: accepted in 30.IX.2002.

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Publication Dates

  • Publication in this collection
    11 May 2009
  • Date of issue
    Dec 2002

History

  • Accepted
    30 Sept 2002
  • Received
    11 Mar 2001
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