Organisms Diversity & Evolution

, Volume 12, Issue 4, pp 349–375

Systematics and phylogenetic species delimitation within Polinices s.l. (Caenogastropoda: Naticidae) based on molecular data and shell morphology

Authors

    • School of Biological SciencesThe University of Queensland, St. Lucia
    • Zoologisches Forschungsmuseum Alexander Koenig
  • Daniel Tapken
    • Department of Biochemistry I - Receptor Biochemistry, Faculty of Chemistry and BiochemistryRuhr University Bochum
  • Tim Dahlmann
    • Department of Biochemistry I - Receptor Biochemistry, Faculty of Chemistry and BiochemistryRuhr University Bochum
  • Heike Wägele
    • Zoologisches Forschungsmuseum Alexander Koenig
  • Cynthia Riginos
    • School of Biological SciencesThe University of Queensland, St. Lucia
  • Michael Hollmann
    • Department of Biochemistry I - Receptor Biochemistry, Faculty of Chemistry and BiochemistryRuhr University Bochum
Original Article

DOI: 10.1007/s13127-012-0111-5

Cite this article as:
Huelsken, T., Tapken, D., Dahlmann, T. et al. Org Divers Evol (2012) 12: 349. doi:10.1007/s13127-012-0111-5

Abstract

Here, we present the first phylogenetic analysis of a group of species taxonomically assigned to Polinices sensu latu (Naticidae, Gastropoda) based on molecular data sets. Polinices s.l. represents a speciose group of the infaunal gastropod family Naticidae, including species that have often been assigned to subgenera of Polinices [e.g. P. (Neverita), P. (Euspira), P. (Conuber) and P. (Mammilla)] based on conchological data. The results of our molecular phylogenetic analysis confirm the validity of five genera, Conuber, Polinices, Mammilla, Euspira and Neverita, including four that have been used previously mainly as subgenera of Polinices s.l. Our results furthermore indicate a close relationship of members of the Polinicinae to Sinum—a genus traditionally placed in the naticid subfamily Sininae. We furthermore present conchological analyses to determine the validity of shell characters used traditionally in species designation in the genus Polinices. Our data reveal several characters (e.g. protoconch, operculum colour, parietal callus) to be informative, while many characters show a high degree of homoplasy (e.g. umbilicus, shell form). Among the species arranged in the genus Polinices s.s., four conchologically very similar taxa often subsumed under the common Indo-Pacific species P. mammilla are separated distinctly in phylogenetic analyses. Despite their striking conchological similarities, none of these four taxa are related directly to each other. Additional conchological analyses of available name-bearing type specimens and type figures reveal the four “mammilla”-like white Polinices species to include true P. mammilla and three additional species, which could be assigned to P. constanti (replacement name for P. dubius), P. jukesii and possibly P. tawhitirahia, based on protoconch and operculum characteristics.

Keywords

PolinicesMolecular systematicsConchologyPolinicinaeSininaeNaticinaeBarcoding

Supplementary material

13127_2012_111_Fig7_ESM.jpg (136 kb)
Fig. S1

Phylograms obtained through Bayesian inference based on the 16S and 28S gene fragments. Posterior probabilities are indicated at the nodes. Branches supported by values > 0.95 are not shown. Polytomies are due to the cut-off value specified for the consensus tree (50% used as the default value in MrBayes) (JPEG 136 kb)

13127_2012_111_MOESM1_ESM.tif (489 kb)
High resolution image (TIFF 488 kb)
13127_2012_111_Fig8_ESM.jpg (121 kb)
Fig. S1

Phylograms obtained through Bayesian inference based on the 16S and 28S gene fragments. Posterior probabilities are indicated at the nodes. Branches supported by values > 0.95 are not shown. Polytomies are due to the cut-off value specified for the consensus tree (50% used as the default value in MrBayes) (JPEG 136 kb)

13127_2012_111_MOESM2_ESM.tif (432 kb)
High resolution image (TIFF 432 kb)
13127_2012_111_Fig9_ESM.jpg (34 kb)
Fig. S1

Phylograms obtained through Bayesian inference based on the 16S and 28S gene fragments. Posterior probabilities are indicated at the nodes. Branches supported by values > 0.95 are not shown. Polytomies are due to the cut-off value specified for the consensus tree (50% used as the default value in MrBayes) (JPEG 136 kb)

13127_2012_111_MOESM3_ESM.tif (3.5 mb)
High resolution image (TIFF 3567 kb)
13127_2012_111_MOESM4_ESM.docx (95 kb)
Table S1Characters and character states analysed in the conchological analysis (DOCX 95 kb)
13127_2012_111_MOESM5_ESM.docx (130 kb)
Table S2Taxa of white Polinices species worldwide, with type information and literature reference to the original descriptions. Altogether, 55 taxa have been found in the literature and are listed alphabetically in three groups. Group 1: White Polinices taxa (21) from the Indo-Pacific region. Group 2: White Polinices taxa (10, plus 1 non-binomial name) with unknown type locality. Questionable type localities based on assumed species synonymy are marked with a ?. Group 3: White Polinices taxa (24) from regions outside the Indo-Pacific area. H holotype, S Syntype, pS possible syntype, P paratype, pP possible paratype, NT neotype, L lectotype, PL paralectotype, pPL possible paralectotype, Uk type unknown (DOCX 129 kb)

Copyright information

© Gesellschaft für Biologische Systematik 2012