Exon-Capture-Based Phylogeny and Diversification of the Venomous Gastropods (Neogastropoda, Conoidea)

Molecular Biology and Evolution
Jawad AbdelkrimN Puillandre

Abstract

Transcriptome-based exon capture methods provide an approach to recover several hundred markers from genomic DNA, allowing for robust phylogenetic estimation at deep timescales. We applied this method to a highly diverse group of venomous marine snails, Conoidea, for which published phylogenetic trees remain mostly unresolved for the deeper nodes. We targeted 850 protein coding genes (678,322 bp) in ca. 120 samples, spanning all (except one) known families of Conoidea and a broad selection of non-Conoidea neogastropods. The capture was successful for most samples, although capture efficiency decreased when DNA libraries were of insufficient quality and/or quantity (dried samples or low starting DNA concentration) and when targeting the most divergent lineages. An average of 75.4% of proteins was recovered, and the resulting tree, reconstructed using both supermatrix (IQ-tree) and supertree (Astral-II, combined with the Weighted Statistical Binning method) approaches, are almost fully supported. A reconstructed fossil-calibrated tree dates the origin of Conoidea to the Lower Cretaceous. We provide descriptions for two new families. The phylogeny revealed in this study provides a robust framework to reinterpret changes in Conoide...Continue Reading

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Citations

Mar 1, 2019·Systematic Biology·Mark A PhuongNicolas Puillandre
Aug 27, 2019·Molecular Ecology Resources·Shahan DerkarabetianGonzalo Giribet
Aug 25, 2020·Journal of Morphology·Elena VortsepnevaYuri Kantor
Jul 28, 2020·Biomedicines·Walden E Bjørn-YoshimotoHelena Safavi-Hemami
Feb 25, 2019·Molecular Phylogenetics and Evolution·John M PfeifferLarry M Page
Oct 23, 2019·Molecular Phylogenetics and Evolution·Paul ZahariasNicolas Puillandre

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