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The phylogenetic relationships between Amphinomidae, Archinomidae and Euphrosinidae (Amphinomida: Aciculata: Polychaeta), inferred from molecular data

Published online by Cambridge University Press:  14 May 2008

Helena Wiklund*
Affiliation:
Department of Zoology, Göteborg University, PO Box 463, SE-405 30 Göteborg, Sweden
Arne Nygren
Affiliation:
Department of Zoology, Göteborg University, PO Box 463, SE-405 30 Göteborg, Sweden
Fredrik Pleijel
Affiliation:
Department of Marine Ecology, Tjärnö Marine Biological Laboratory, Göteborg University, SE-452 96 Strömstad, Sweden
Per Sundberg
Affiliation:
Department of Zoology, Göteborg University, PO Box 463, SE-405 30 Göteborg, Sweden
*
Correspondence should be addressed to: Helena WiklundGöteborg UniversityDepartment of Zoology PO Box 463 SE-405 30 Göteborg, Sweden email: helena.wiklund@zool.gu.se

Abstract

Amphinomida is an ‘isolated’ clade within the polychaete group Aciculata and traditionally includes the families Amphinomidae, Archinomidae and Euphrosinidae. Archinomidae were erected for a single species, the hydrothermal vent polychaete Archinome rosacea. Originally, A. rosacea was assigned to Euphrosinidae although it shares more morphological similarities with Amphinomidae. In this study we assess the position of Archinome, Euphrosinidae and Amphinomidae by using molecular data from nuclear 18S rDNA and 28S rDNA. Parsimony, maximum likelihood and Bayesian analyses are performed on the nucleotide datasets covering in total 19 terminals from Amphinomidae, Euphrosinidae, Archinomidae and outgroups. Our results conclusively show that Euphrosinidae and Amphinomidae are sister taxa and that Archinome is sister to Chloeia within Amphinomidae. Based on these results the family name Archinomidae is treated as a junior synonym of Amphinomidae.

Information

Type
Research Article
Copyright
Copyright © Marine Biological Association of the United Kingdom 2008

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