Consequences of Asexuality in Natural Populations: Insights from Stick Insects.

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Serval ID
serval:BIB_00D517ACA82A
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Consequences of Asexuality in Natural Populations: Insights from Stick Insects.
Journal
Molecular biology and evolution
Author(s)
Bast J., Parker D.J., Dumas Z., Jalvingh K.M., Tran Van P., Jaron K.S., Figuet E., Brandt A., Galtier N., Schwander T.
ISSN
1537-1719 (Electronic)
ISSN-L
0737-4038
Publication state
Published
Issued date
01/07/2018
Peer-reviewed
Oui
Volume
35
Number
7
Pages
1668-1677
Language
english
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Abstract
Recombination is a fundamental process with significant impacts on genome evolution. Predicted consequences of the loss of recombination include a reduced effectiveness of selection, changes in the amount of neutral polymorphisms segregating in populations, and an arrest of GC-biased gene conversion. Although these consequences are empirically well documented for nonrecombining genome portions, it remains largely unknown if they extend to the whole genome scale in asexual organisms. We identify the consequences of asexuality using de novo transcriptomes of five independently derived, obligately asexual lineages of stick insects, and their sexual sister-species. We find strong evidence for higher rates of deleterious mutation accumulation, lower levels of segregating polymorphisms and arrested GC-biased gene conversion in asexuals as compared with sexuals. Taken together, our study conclusively shows that predicted consequences of genome evolution under asexuality can indeed be found in natural populations.
Keywords
Animals, Gene Conversion, Genetic Variation, Insecta/genetics, Mutation Accumulation, Reproduction, Asexual, Selection, Genetic, Silent Mutation
Pubmed
Web of science
Open Access
Yes
Create date
09/04/2018 13:21
Last modification date
22/09/2021 5:38
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