Sökning: id:"swepub:oai:lup.lub.lu.se:a11e7ce0-54d9-479d-8567-144f408764e1" >
Lack of gene flow :...
Lack of gene flow : Narrow and dispersed differentiation islands in a triplet of Leptidea butterfly species
-
- Talla, Venkat (författare)
- Uppsala universitet,Uppsala University,Evolutionsbiologi
-
- Johansson, Anna (författare)
- Uppsala universitet,Uppsala University,Institutionen för medicinsk biokemi och mikrobiologi
-
- Dincă, Vlad (författare)
- University of Oulu,Univ Oulu, Dept Ecol & Genet, Oulu, Finland
-
visa fler...
-
- Vila, Roger (författare)
- Institute of Evolutionary Biology,Inst Biol Evolut CSIC UPF, Barcelona, Spain
-
- Friberg, Magne (författare)
- Lund University,Lunds universitet,Biodiversitet,Biologiska institutionen,Naturvetenskapliga fakulteten,Biodiversity,Department of Biology,Faculty of Science,Lund Univ, Dept Biol, Biodivers Unit, Lund, Sweden
-
- Wiklund, Christer (författare)
- Stockholms universitet,Stockholm University,Zoologiska institutionen,Stockholm Univ, Dept Zool, Div Ecol, Stockholm, Sweden
-
- Backström, Niclas, 1969- (författare)
- Uppsala universitet,Uppsala University,Evolutionsbiologi
-
visa färre...
-
(creator_code:org_t)
- 2019-08-08
- 2019
- Engelska.
-
Ingår i: Molecular Ecology. - : Wiley. - 0962-1083 .- 1365-294X. ; 28:16, s. 3756-3770
- Relaterad länk:
-
http://dx.doi.org/10...
-
visa fler...
-
https://digital.csic...
-
https://lup.lub.lu.s...
-
https://doi.org/10.1...
-
https://urn.kb.se/re...
-
https://urn.kb.se/re...
-
visa färre...
Abstract
Ämnesord
Stäng
- 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 (FST ) regions generally had low genetic diversity (θπ ), but increased absolute divergence (DXY ) 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.
Ämnesord
- NATURVETENSKAP -- Biologi -- Evolutionsbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Evolutionary Biology (hsv//eng)
- NATURVETENSKAP -- Biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences (hsv//eng)
- NATURVETENSKAP -- Biologi -- Genetik (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Genetics (hsv//eng)
Nyckelord
- Animals
- Asia
- Bacterial Proteins
- Butterflies/classification
- DNA, Mitochondrial/genetics
- Europe
- Gene Flow
- Gene Frequency
- Genetic Speciation
- Genetic Variation
- Genetics, Population
- Genome
- Repressor Proteins
- Selection, Genetic
- Whole Genome Sequencing
- cryptic species
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
Hitta via bibliotek
Till lärosätets databas