Genome-wide differentiation in closely related populations: the roles of selection and geographic isolation

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081766%3A_____%2F16%3A00461867" target="_blank" >RIV/68081766:_____/16:00461867 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11310/16:10332251

Result on the web

<a href="http://dx.doi.org/10.1111/mec.13740" target="_blank" >http://dx.doi.org/10.1111/mec.13740</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/mec.13740" target="_blank" >10.1111/mec.13740</a>

Result language

angličtina

Original language name

Genome-wide differentiation in closely related populations: the roles of selection and geographic isolation

Original language description

Population divergence in geographic isolation is due to a combination of factors. Natural and sexual selection may be important in shaping patterns of population differentiation, a pattern referred to as isolation by adaptation’ (IBA). IBA can be complementary to the well-known pattern of isolation by distance’ (IBD), in which the divergence of closely related populations (via any evolutionary process) is associated with geographic isolation. The barn swallow Hirundo rustica complex comprises six closely related subspecies, where divergent sexual selection is associated with phenotypic differentiation among allopatric populations. To investigate the relative contributions of selection and geographic distance to genome-wide differentiation, we compared genotypic and phenotypic variation from 350 barn swallows sampled across eight populations (28 pairwise comparisons) from four different subspecies. We report a draft whole-genome sequence for H. rustica, to which we aligned a set of 9493 single nucleotide polymorphisms (SNPs). Using statistical approaches to control for spatial autocorrelation of phenotypic variables and geographic distance, we find that divergence in traits related to migratory behaviour and sexual signalling, as well as geographic distance, together explain over 70% of genome-wide divergence among populations. Controlling for IBD, we find 42% of genomewide divergence is attributable to IBA through pairwise differences in traits related to migratory behaviour and sexual signalling alone. By (i) combining these results with prior studies of how selection shapes morphological differentiation and (ii) accounting for spatial autocorrelation, we infer that morphological adaptation plays a large role in shaping population-level differentiation in this group of closely related populations.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

EG - Zoology

OECD FORD branch

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Project

<a href="/en/project/LH14045" target="_blank" >LH14045: Evolution of sexual ornaments and their information content: a comparative study in isolated populations with divergent signal traits and preferences</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Molecular Ecology

ISSN

0962-1083

e-ISSN

—

Volume of the periodical

25

Issue of the periodical within the volume

16

Country of publishing house

GB - UNITED KINGDOM

Number of pages

19

Pages from-to

3865-3883

UT code for WoS article

000381578200007

EID of the result in the Scopus database

2-s2.0-84981745112