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Phylogeny of Chone Krøyer, 1856 (Polychaeta: Sabellidae) and related genera

2008; Taylor & Francis; Volume: 42; Issue: 33-34 Linguagem: Inglês

10.1080/00222930802254714

1464-5262

María Ana Tovar‐Hernández,

Coral and Marine Ecosystems Studies

Abstract An analysis was undertaken to test the monophyly of the sabellid genus Chone Krøyer using maximum parsimony methodology. Cladistic analysis revealed three monophyletic genera whose respective members were assigned previously to Chone. Chone sensu stricto (containing the type species) is defined by the presence of broadly rounded dorsal lips and thoracic uncini with a large tooth above the main fang, followed by a series of smaller teeth. Dialychone Claparède is re‐established for the second genus and a new name – Paradialychone – is proposed for terminals nested in the third clade. Dialychone and Paradialychone gen. nov. are the sister groups of Chone, defined by the presence of a simple pre‐pygidial depression and modified posterior abdominal uncini. Amphicorina Claparède is basal within Sabellinae and Euchone Malmgren is the sister group of Chone, Paradialychone gen. nov. and Dialychone. The analysis supports the transfer of C. princei and C. reayi to Jasmineira Langerhans. Present address: Laboratorio de Invertebrados Bentónicos, Instituto de Ciencias del Mar y Limnología, Unidad Académica Mazatlán, Universidad Nacional Autónoma de México, Calzada Joel Montes Camarena s/n, 82000, Mazatlán, Sinaloa, Mexico. Keywords: Amphicorina Dialychone Euchone Jasmineira Sabellidaenew genus Acknowledgements I am grateful to Sergio I. Salazar‐Vallejo, Luis Fernando Carrera‐Parra (ECOSUR–Chetumal) and Kirk Fitzhugh (LACM–AHF) for their valuable suggestions for this study. Thanks also go to Guadalupe Nieto (Laboratorio de Microscopía Electrónica de Barrido, ECOSUR–Tapachula) for their help in processing scanning electron micrographs. Special thanks to the reviewers for their helpful suggestions. I also thank Jennifer Dreyer (Virginia Institute of Marine Science) for the careful revision of the English manuscript. Notes Present address: Laboratorio de Invertebrados Bentónicos, Instituto de Ciencias del Mar y Limnología, Unidad Académica Mazatlán, Universidad Nacional Autónoma de México, Calzada Joel Montes Camarena s/n, 82000, Mazatlán, Sinaloa, Mexico.