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Journal Molluscan Studies Advance Access published online on February 20, 2009
Journal of Molluscan Studies, doi:10.1093/mollus/eyp003
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© The Author 2009. Published by Oxford University Press on behalf of The Malacological Society of London, all rights reserved

THE PHYLOGENY AND BIOGEOGRAPHY OF THE GENUS ZONITES MONTFORT, 1810 (GASTROPODA: PULMONATA): PRELIMINARY EVIDENCE FROM MITOCHONDRIAL DATA

Panagiotis Kornilios1, Nikos Poulakakis2,3, Moysis Mylonas1,2 and Katerina Vardinoyannis2

1Department of Biology, University of Crete, Vassilika Vouton, PO Box 2208, 71409 Heraklion, Crete, Greece; 2Natural History Museum of Crete, University of Crete, Knosos Avenue, PO Box 2208, 71409 Herakleio, Crete, Greece; and 3Department of Ecology and Evolutionary Biology and Yale Institute of Biospheric Studies, Yale University, New Haven, CT 06520-8106, USA

Correspondence: P. Kornilios; e-mail: korniliospan{at}yahoo.gr


  Abstract

The genus Zonites, which includes 26 extant species, is distributed in the northeastern Mediterranean area and exhibits significant diversity and endemism. This is the first phylogenetic study of Zonites, based on partial mitochondrial DNA sequences of the 16S rRNA gene. A total of 43 specimens, belonging to 15 species from 39 localities in Greece and Turkey, were included. Analyses revealed two major clades, corresponding to two distinct geographic regions, west and east of the mid-Aegean trench. The palaeogeography of the Aegean and the plasticity of the Zonites shells have produced a great variety of forms that have been identified as different species or subspecies. Our results, although preliminary, suggest that the taxonomy of Zonites requires revision. We propose an historical interpretation of the present distribution of Zonites, based on the palaeogeographic history of the Aegean region.

(Received 6 June 2008; accepted 26 November 2008)


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