Contents

Abstract

Phylogenetic relationships among higher clades of pulmonate gastropods are reconstructed based on a data set including one nuclear marker (complete ribosomal 18S) and two mitochondrial markers (partial ribosomal 16S and Cytochrome oxidase I) for a total of 96 species. Sequences for 66 of these species are new to science, with a special emphasis on sampling the Ellobiidae, Onchidiidae, and Veronicellidae. Important results include the monophyly of Systellommatophora (Onchidiidae and Veronicellidae) as well as the monophyly of Ellobiidae (including Trimusculus, Otina, and Smeagol). Relationships within Ellobiidae, Onchidiidae, and Veronicellidae are evaluated here for the first time using molecular data. Present results are compared with those from the recent literature, and the current knowledge of phylogenetic relationships among pulmonate gastropods is reviewed: despite many efforts, deep nodes are still uncertain. Identification uncertainties about early fossils of pulmonates are reviewed. Impacts of those phylogenetic and fossil record uncertainties on our understanding of the macro-evolutionary history of pulmonates, especially transitions between aquatic and terrestrial habitats, are discussed.

Keywords: Ellobiidae; Euthyneura; Macro-evolutionary transitions; Onchidiidae; Veronicellidae

Bibliographic Data

Title
Phylogenetic relationships and evolution of pulmonate gastropods (Mollusca): New insights from increased taxon sampling
Author
Dayrat, B; Conrad, M; Balayan, S; White, T. R; Albrecht, C; Golding, R; Gomes, S. R; Harasewych, M. G; de Frias Martins, A. M
Year
2011
Publication Type
Refereed Article
Journal
Molecular Phylogenetics and Evolution
Number of pages
425-437
Images
False
Volume
59
DOI
10.1016/j.ympev.2011.02.014
Abstract URL
Graphical abstract