uu.seUppsala University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Lack of gene flow: Narrow and dispersed differentiation islands in a triplet of Leptidea butterfly species
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Genetics, Evolutionary Biology.ORCID iD: 0000-0003-2653-6770
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Biochemistry and Microbiology.
Univ Oulu, Dept Ecol & Genet, Oulu, Finland.
Inst Biol Evolut CSIC UPF, Barcelona, Spain.ORCID iD: 0000-0002-2447-4388
Show others and affiliations
2019 (English)In: Molecular Ecology, ISSN 0962-1083, E-ISSN 1365-294X, Vol. 28, no 16, p. 3756-3770Article in journal (Refereed) Published
Abstract [en]

Genome scans in recently separated species can inform on molecular mechanisms and evolutionary processes driving divergence. Large-scale polymorphism data from multiple species pairs are also key to investigate the repeatability of divergence-whether radiations tend to show parallel responses to similar selection pressures and/or underlying molecular forces. Here, we used whole-genome resequencing data from six wood white (Leptidea sp.) butterfly populations, representing three closely related species with karyomorph variation, to infer the species' demographic history and characterize patterns of genomic diversity and differentiation. The analyses supported previously established species relationships, and there was no evidence for postdivergence gene flow. We identified significant intraspecific genetic structure, in particular between karyomorph extremes in the wood white (L. sinapis)-a species with a remarkable chromosome number cline across the distribution range. The genomic landscapes of differentiation were erratic, and outlier regions were narrow and dispersed. Highly differentiated (F-ST) regions generally had low genetic diversity (theta(pi)), but increased absolute divergence (D-XY) and excess of rare frequency variants (low Tajima's D). A minority of differentiation peaks were shared across species and population comparisons. However, highly differentiated regions contained genes with overrepresented functions related to metabolism, response to stimulus and cellular processes, indicating recurrent directional selection on a specific set of traits in all comparisons. In contrast to the majority of genome scans in recently diverged lineages, our data suggest that divergence landscapes in Leptidea have been shaped by directional selection and genetic drift rather than stable recombination landscapes and/or introgression.

Place, publisher, year, edition, pages
WILEY , 2019. Vol. 28, no 16, p. 3756-3770
Keywords [en]
cryptic species, genome scan, Lepidoptera, Leptidea, speciation, wood white butterflies
National Category
Evolutionary Biology Genetics
Identifiers
URN: urn:nbn:se:uu:diva-396116DOI: 10.1111/mec.15188ISI: 000481217800001PubMedID: 31325366OAI: oai:DiVA.org:uu-396116DiVA, id: diva2:1366925
Funder
Swedish Research Council, 2013-4508Knut and Alice Wallenberg FoundationSwedish National Infrastructure for Computing (SNIC)Science for Life Laboratory - a national resource center for high-throughput molecular bioscienceAvailable from: 2019-10-31 Created: 2019-10-31 Last updated: 2019-10-31Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textPubMed

Authority records BETA

Talla, VenkatBackström, Niclas

Search in DiVA

By author/editor
Talla, VenkatVila, RogerBackström, Niclas
By organisation
Evolutionary BiologyDepartment of Medical Biochemistry and Microbiology
In the same journal
Molecular Ecology
Evolutionary BiologyGenetics

Search outside of DiVA

GoogleGoogle Scholar

doi
pubmed
urn-nbn

Altmetric score

doi
pubmed
urn-nbn
Total: 9 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf