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Taxonomic distinction of Ophelia barquii and O. bicornis (Annelida: Polychaeta) in the Mediterranean as revealed by ISSR markers and the number of nephridiopores

Published online by Cambridge University Press:  27 June 2005

Ferruccio Maltagliati
Affiliation:
Dipartimento di Scienze dell'Uomo e dell'Ambiente, Università di Pisa, Via A. Volta 6, 56126 Pisa, Italy
Marco Casu
Affiliation:
Dipartimento di Zoologia e Antropologia Biologica, Università di Sassari, Via F. Muroni 25, 07100 Sassari, Italy
Tiziana Lai
Affiliation:
Dipartimento di Zoologia e Antropologia Biologica, Università di Sassari, Via F. Muroni 25, 07100 Sassari, Italy
Daniela Iraci Sareri
Affiliation:
Dipartimento di Biologia Animale ‘M. La Greca’, Università di Catania, Via Androne 81, 95124 Catania, Italy
Daniela Casu
Affiliation:
Dipartimento di Scienze dell'Uomo e dell'Ambiente, Università di Pisa, Via A. Volta 6, 56126 Pisa, Italy Dipartimento di Zoologia e Antropologia Biologica, Università di Sassari, Via F. Muroni 25, 07100 Sassari, Italy
Marco Curini Galletti
Affiliation:
Dipartimento di Zoologia e Antropologia Biologica, Università di Sassari, Via F. Muroni 25, 07100 Sassari, Italy
Grazia Cantone
Affiliation:
Dipartimento di Biologia Animale ‘M. La Greca’, Università di Catania, Via Androne 81, 95124 Catania, Italy
Alberto Castelli
Affiliation:
Dipartimento di Scienze dell'Uomo e dell'Ambiente, Università di Pisa, Via A. Volta 6, 56126 Pisa, Italy

Abstract

Ophelia bicornis sensu lato is a polychaete living in intertidal sandy habitats of Mediterranean and European Atlantic coasts, whose systematics have been strongly debated in the past few decades. In the present work the count of nephridiopores was coupled with genetic analysis carried out with DNA markers (inter simple sequence repeats) for a total of 30 individuals collected at six Italian beaches. Exact test, analysis of molecular variance, non-metric multidimensional scaling and assignment tests clearly separated individuals with five nephridiopore pairs from those with six pairs. This finding validated results of a recent allozyme study in which O. bicornis sensu lato was split into O. bicornis sensu stricto (six nephridiopore pairs) and O. barquii (five nephridiopore pairs). This paper represents a further contribution to the estimation of biodiversity within marine invertebrates.

Type
Research Article
Copyright
2005 Marine Biological Association of the United Kingdom

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Taxonomic distinction of Ophelia barquii and O. bicornis (Annelida: Polychaeta) in the Mediterranean as revealed by ISSR markers and the number of nephridiopores
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Taxonomic distinction of Ophelia barquii and O. bicornis (Annelida: Polychaeta) in the Mediterranean as revealed by ISSR markers and the number of nephridiopores
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Taxonomic distinction of Ophelia barquii and O. bicornis (Annelida: Polychaeta) in the Mediterranean as revealed by ISSR markers and the number of nephridiopores
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