Signal traits and oxidative stress: a comparative study across populations with divergent signals

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081766%3A_____%2F16%3A00459714" target="_blank" >RIV/68081766:_____/16:00459714 - isvavai.cz</a>

Result on the web

<a href="https://www.frontiersin.org/articles/10.3389/fevo.2016.00056/full" target="_blank" >https://www.frontiersin.org/articles/10.3389/fevo.2016.00056/full</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3389/fevo.2016.00056" target="_blank" >10.3389/fevo.2016.00056</a>

Result language

angličtina

Original language name

Signal traits and oxidative stress: a comparative study across populations with divergent signals

Original language description

Diverging populations often shift patterns of signal use – a process that can contribute to reproductive isolation and speciation. Yet it is not clear why most traits gain or lose signal value during divergence. One reason this could occur is because changes in the relationship between signals and relevant physiological parameters degrade the reliability of a signal, or even change its underlying information content. Here we test whether signal trait elaboration is differently related to a central component of organismal health – oxidative stress – across populations that differ in signal use and preferences. In the recently diverged barn swallow subspecies complex (Hirundo rustica), different populations use different traits as sexual signals. Two of these traits, ventral breast plumage color and tail streamer length, differ markedly between North American H. r. erythrogaster and European H. r. rustica. Despite this divergence, variation in ventral plumage color was similarly associated with measures of oxidative damage across both populations. However, the directionality of these relationships differed between the sexes: darker male barn swallows had higher levels of plasma oxidative damage than their lighter counterparts, while the opposite relationship was seen in females. In contrast, relationships between tail streamer length and measures of oxidative stress were not consistent across populations. In European H. r. rustica, where males bearing elongated streamers are preferred as mates, longer-streamered males appeared to be more oxidatively stressed, whereas the opposite pattern was suggested in North American H. r. erythrogaster. Overall, our results suggest that while some phenotypic traits appear to be capable of conveying similar physiological information regardless of their use as signals, divergence in other phenotypic traits may be associated with shifts in their information content.

Czech name

—

Czech description

—

Type

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

CEP classification

—

OECD FORD branch

10618 - Ecology

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

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>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

Frontiers in Ecology and Evolution

ISSN

2296-701X

e-ISSN

2296-701X

Volume of the periodical

4

Issue of the periodical within the volume

56

Country of publishing house

CH - SWITZERLAND

Number of pages

11

Pages from-to

56

UT code for WoS article

000517761700056

EID of the result in the Scopus database

2-s2.0-85018029294