The evolution of feather coloration and song in Old World orioles (genus Oriolus)

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F17%3A73584200" target="_blank" >RIV/61989592:15310/17:73584200 - isvavai.cz</a>

Result on the web

<a href="http://onlinelibrary.wiley.com/doi/10.1111/jav.01175/full" target="_blank" >http://onlinelibrary.wiley.com/doi/10.1111/jav.01175/full</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/jav.01175/" target="_blank" >10.1111/jav.01175/</a>

Result language

angličtina

Original language name

The evolution of feather coloration and song in Old World orioles (genus Oriolus)

Original language description

What is the tempo and mode of evolution - how fast and in what pattern do traits evolve - is a major question of evolutionary biology. Here we studied patterns of evolutionary change in visual and acoustic signals in Old World orioles. Since producing multiple signals may be costly, we also tested whether there was an evolutionary trade-off between the elaboration of those two types of signals. We studied 30 Oriolus taxa using comparative methods and a recent molecular phylogeny. Morphology and plumage hue evolved comparatively slowly, whereas song evolved rapidly. Among individual feather patches, the evolutionary rate of color was slowest in primaries, which are critical for flapping flight, and fastest in patches exposed to observers (mantle and breast). Thus, primaries seem to be under functional constraint while the evolution of visually exposed patches is perhaps shaped by sexual selection. Song evolution was comparatively fast, but also attracted to a single optimum. This may be due to selection for signal efficacy, because all orioles inhabit similar forested habitats. Only color diversity was best fit by a speciational model: the biggest changes in coloration were concentrated at speciation events, thus perhaps linked to the evolution of species recognition. Our analysis did not reveal any evolutionary trade-off between acoustic and visual signals, suggesting that the elaboration of visual and acoustic signals in the Old World orioles evolved independently. Our study shows that patterns of evolutionary change may be surprisingly complex even within a single clade of birds and thus further studies are needed to identify general patterns of signal macroevolution.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10613 - Zoology

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2017

Confidentiality

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

Name of the periodical

Journal of Avian Biology

ISSN

0908-8857

e-ISSN

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Volume of the periodical

48

Issue of the periodical within the volume

7

Country of publishing house

DK - DENMARK

Number of pages

10

Pages from-to

1015-1024

UT code for WoS article

000407250900012

EID of the result in the Scopus database

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