Resolving the basal divisions in the stylommatophoran land snails and slugs with special emphasis on the position of the Scolodontidae.

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ID: 59939
2019
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Ranked #16 of 26 articles by views in Molecular phylogenetics and evolution

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Abstract
The deep divisions at the base of the stylommatophoran land snails and slugs have proved to be controversial, with the phylogenetic position of the Scolodontidae remaining unresolved. Here we present a phylogenetic analysis of 34 stylommatophoran genera based on a combined dataset (5782 sites) of four loci with the aim of resolving the position of the Scolodontidae and their relationship to the 'achatinoid' and 'non-achatinoid' clades. We also evaluate the phylogenetic utility of different genes and gene partitions. The deep phylogenetic relationships within the Stylommatophora are now clearly resolved. The Scolodontidae are shown categorically to be the sister group to all other stylommatophoran groups with robust support and with all phylogeny reconstruction methods. The 'achatinoid' and 'non-achatinoid' clades are also strongly supported in the tree. The original LSU 1-5 fragment used extensively in studies of the Stylommatophora was found to be the most informative gene fragment and works well at resolving relationships at most levels in the Stylommatophora but does not reliably resolve the deep level relationships at the very base of the clade. The concatenated dataset of four genes employed in this study is not only informative at lower levels but also resolves the deep level relationships at the base of the Stylommatophora with robust support.
Reference Key
saadi2019resolvingmolecular Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Saadi, Ahmed J;Wade, Christopher M;
Journal Molecular phylogenetics and evolution
Year 2019
DOI
S1055-7903(19)30193-9
URL
Keywords
lsu co1 histone 3 ribosomal rna ssu scolodontidae stylommatophora ‘achatinoid clade’ ‘non-achatinoid clade’

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