Journal of the Marine Biological Association of the United Kingdom

Research Article

Combined analysis of four mitochondrial regions allowed the detection of several matrilineal lineages of the lessepsian fish Fistularia commersonii in the Mediterranean Sea

Daria Sannaa1, Paolo Merellaa2, Tiziana Laia1, Sarra Farjallaha3, Paolo Francalaccia1, Marco Curini-Gallettia1, Antonio Paisa4 and Marco Casua1 c1

a1 Dipartimento di Zoologia e Genetica Evoluzionistica, Università di Sassari, Via F. Muroni 25, 07100 Sassari, Italy

a2 Sezione di Parassitologia e Malattie Parassitarie, Dipartimento di Biologia Animale, Università di Sassari, Via Vienna 2, 07100 Sassari, Italy

a3 Unité de Recherche: Génétique, Biodiversité et Valorisation des Bioressources UR/09-30, Institut Supérieur de Biotechnologie de Monastir, Monastir 5000, Tunisia

a4 Sezione di Acquacoltura e Gestione delle Risorse Acquatiche, Dipartimento di Scienze Zootecniche, Università di Sassari, Via E. De Nicola 9, 07100 Sassari, Italy

Abstract

The bluespotted cornetfish (Fistularia commersonii) is an Indo-Pacific species that in the last ten years colonized a large part of the Mediterranean basin. The aim of this study was to sequence some portions of the mitochondrial DNA (D-loop II, 16S, 12S and Cyt b) of this fish from different localities of the Mediterranean Sea, in order to evaluate the level of its genetic variability in this area. The genetic analysis performed on specimens from seven localities of Sardinia, Tunisia and Libya revealed the presence of at least five mitochondrial lineages. The results obtained, compared with previous studies, indicate that the use of a sufficient number of mitochondrial regions may allow a more accurate estimate of genetic variability in lessepsian invasions.

(Received April 12 2010)

(Accepted July 12 2010)

(Online publication September 27 2010)

Correspondence:

c1 Correspondence should be addressed to: M. Casu, Dipartimento di Zoologia e Genetica Evoluzionistica, Università di Sassari, Via F. Muroni 25, 07100 Sassari (Italy) email: marcasu@uniss.it