Genomics of extreme ecological specialists: multiple convergent evolution but no genetic divergence between ecotypes of Maculinea alcon butterflies.

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State: Public
Version: Final published version
Serval ID
serval:BIB_D431D0966B45
Type
Article: article from journal or magazin.
Collection
Publications
Title
Genomics of extreme ecological specialists: multiple convergent evolution but no genetic divergence between ecotypes of Maculinea alcon butterflies.
Journal
Scientific reports
Author(s)
Koubínová D., Dincă V., Dapporto L., Vodă R., Suchan T., Vila R., Alvarez N.
ISSN
2045-2322 (Electronic)
ISSN-L
2045-2322
Publication state
Published
Issued date
23/10/2017
Peer-reviewed
Oui
Volume
7
Number
1
Pages
13752
Language
english
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: epublish
Abstract
Biotic interactions are often acknowledged as catalysers of genetic divergence and eventual explanation of processes driving species richness. We address the question, whether extreme ecological specialization is always associated with lineage sorting, by analysing polymorphisms in morphologically similar ecotypes of the myrmecophilous butterfly Maculinea alcon. The ecotypes occur in either hygric or xeric habitats, use different larval host plants and ant species, but no significant distinctive molecular traits have been revealed so far. We apply genome-wide RAD-sequencing to specimens originating from both habitats across Europe in order to get a view of the potential evolutionary processes at work. Our results confirm that genetic variation is mainly structured geographically but not ecologically - specimens from close localities are more related to each other than populations of each ecotype from distant localities. However, we found two loci for which the association with xeric versus hygric habitats is supported by segregating alleles, suggesting convergent evolution of habitat preference. Thus, ecological divergence between the forms probably does not represent an early stage of speciation, but may result from independent recurring adaptations involving few genes. We discuss the implications of these results for conservation and suggest preserving biotic interactions and main genetic clusters.
Keywords
Animals, Biological Evolution, Butterflies/genetics, Ecosystem, Ecotype, Genetic Drift, Genetics, Population, Genomics/methods, Gentiana/parasitology, Host-Parasite Interactions, Phenotype, Polymorphism, Single Nucleotide, Population Dynamics
Pubmed
Web of science
Open Access
Yes
Create date
13/11/2017 18:00
Last modification date
20/08/2019 15:54
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