Publication

2003-03

English

http://archimer.ifremer.fr/doc/2003/publication-706.pdf (0.21 Mo)

Blackwell Publishing, Inc.

Rousset Vincent, Rouse Greg, Feral Jean-Pierre, Desbruyeres Daniel, Pleijel Fredrik

Museum Natl Hist Nat, CNRS, ESA 8044, Lab Biol Invertebres Marins & Malacol, F-75231 Paris 5, France.
Museum Natl Hist Nat, CNRS, Fr 1541, Inst Systemat,Serv Systemat Mol, F-75231 Paris, France.
Univ Adelaide, Adelaide, SA 5000, Australia.
S Australian Museum, Adelaide, SA, Australia.
Observ Oceanol Banyuls, CNRS, URA 117, F-66650 Banyuls sur Mer, France.
IFREMER, Ctr Brest, Dept Environm Profond, F-29280 Plouzane, France.

Zoologica Scripta (0300-3256) (Blackwell science), 2003-03 , Vol. 32 , N. 2 , P. 185-197

27

Biology, Ecology

Molecular, Alvinellidae, Polychaete, Phylogenetic

In this study we assessed the phylogenetic relationships of the hydrothermal vent polychaete group Alvinellidae, based on parsimony analyses of combined morphological and molecular data. Morphological data were obtained from newly examined specimens and literature information of 16 terminal taxa belonging to Alvinellidae, Ampharetidae, Pectinariidae, Terebellidae, Trichobranchidae, and the outgroups Oweniidae and Sabellidae. Molecular data were based on 28S rRNA from 13 of the 16 morphological terminals (10 previously published sequences plus three new ones). The combined analysis indicated the clades ((Alvinellidae, Trichobranchidae) Pectinariidae) and (Ampharetidae, Terebellidae). Alvinellidae, Ampharetidae and Terebellidae, as currently delineated, are monophyletic. The positions of Trichobranchidae and Pectinariidae contradicted traditional views, and they also had low Bremer support and merit further studies. Well-supported clades included Alvinellidae and Terebellinae. Previous statements that Alvinellidae are either nested within Ampharetidae or the sister to this taxon were not supported. The traditional but here contradicted view that Terebellidae and Trichobranchidae are closely related may be based on plesiomorphic similarities between these two taxa.