Common lizards break Dollo’s law of irreversibility: genome-wide phylogenomics support a single origin of viviparity and re-evolution of oviparity

Recknagel, H. , Kamenos, N. and Elmer, K. R. (2018) Common lizards break Dollo’s law of irreversibility: genome-wide phylogenomics support a single origin of viviparity and re-evolution of oviparity. Molecular Phylogenetics and Evolution, 127, pp. 579-588. (doi: 10.1016/j.ympev.2018.05.029) (PMID:29803948)

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Dollo’s law of irreversibility states that once a complex trait has been lost in evolution, it cannot be regained. It is thought that complex epistatic interactions and developmental constraints impede the re-emergence of such a trait. Oviparous reproduction (egg-laying) requires the formation of an eggshell and represents an example of such a complex trait. In reptiles, viviparity (live-bearing) has evolved repeatedly but it is highly disputed if oviparity has re-evolved. Here, using up to 194,358 SNP loci and 1,334,760 bp of sequence, we reconstruct the phylogeny of viviparous and oviparous lineages of common lizards and infer the evolutionary history of parity modes. Our phylogeny supports six main common lizard lineages that have been previously identified. We find strong statistical support for a topological arrangement that suggests a reversal to oviparity from viviparity. Our topology is consistent with highly differentiated chromosomal configurations between lineages, but disagrees with previous phylogenetic studies in some nodes. While we find high support for a reversal to oviparity, more genomic and developmental data are needed to robustly test this and assess the mechanism by which a reversal might have occurred.

Item Type:Articles
Additional Information:For funding we gratefully acknowledge a Heredity Fieldwork grant by the Genetic Society to HR, a University of Glasgow Lord Kelvin-Adam Smith PhD Studentship to KRE and NK for HR, and NERC grant NE/N003942/1 to KRE.
Glasgow Author(s) Enlighten ID:Kamenos, Professor Nick and Elmer, Professor Kathryn and Recknagel, Mr Hans
Authors: Recknagel, H., Kamenos, N., and Elmer, K. R.
College/School:College of Science and Engineering > School of Geographical and Earth Sciences
College of Medical Veterinary and Life Sciences > School of Biodiversity, One Health & Veterinary Medicine
Journal Name:Molecular Phylogenetics and Evolution
ISSN (Online):1095-9513
Published Online:24 May 2018
Copyright Holders:Copyright © 2018 The Authors
First Published:First published in Molecular Phylogenetics and Evolution 127: 579-588
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
661581From egg-laying to live-bearing: Unravelling the genetics of a major evolutionary transitionKathryn ElmerNatural Environment Research Council (NERC)NE/N003942/1RI BIODIVERSITY ANIMAL HEALTH & COMPMED