Phenotypic differentiation is associated with divergent sexual selection among closely related barn swallow populations

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081766%3A_____%2F16%3A00462699" target="_blank" >RIV/68081766:_____/16:00462699 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11310/16:10332257

Result on the web

<a href="http://dx.doi.org/10.1111/jeb.12965" target="_blank" >http://dx.doi.org/10.1111/jeb.12965</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/jeb.12965" target="_blank" >10.1111/jeb.12965</a>

Result language

angličtina

Original language name

Phenotypic differentiation is associated with divergent sexual selection among closely related barn swallow populations

Original language description

Sexual selection plays a key role in the diversification of numerous animal clades and may accelerate trait divergence during speciation. However, much of our understanding of this process comes from phylogenetic comparative studies, which rely on surrogate measures such as dimorphism that may not represent selection in wild populations. In this study, we assess sexual selection pressures for multiple male visual signals across four barn swallow (Hirundo rustica) populations. Our sample encompassed 2400 linear km and two described subspecies: European H. r. rustica (in the Czech Republic and Romania) and eastern Mediterranean H. r. transitiva (in Israel), as well as a potential area of contact (in Turkey). We demonstrate significant phenotypic differentiation in four sexual signalling axes, despite very low-level genomic divergence and no comparable divergence in an ecological trait. Moreover, the direction of phenotypic divergence is consistent with differences in sexual selection pressures among subspecies. Thus, H. r. transitiva, which have the darkest ventral plumage of any population, experience directional selection for darker plumage. Similarly, H. r. rustica, which have the longest tail feathers of any population, experience directional selection for elongated tail feathers and disruptive selection for ventral plumage saturation. These results suggest that sexual selection is the primary driver of phenotypic differentiation in this species. Our findings add to growing evidence of phenotypic divergence with gene flow. However, to our knowledge, this is the first study to relate direct measures of the strength and targets of sexual selection to phenotypic divergence among closely related wild 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

—

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

Journal of Evolutionary Biology

ISSN

1010-061X

e-ISSN

—

Volume of the periodical

29

Issue of the periodical within the volume

12

Country of publishing house

GB - UNITED KINGDOM

Number of pages

12

Pages from-to

2410-2421

UT code for WoS article

000389844700006

EID of the result in the Scopus database

2-s2.0-84992215140