Trade-off between carotenoid-based sexual ornamentation and sperm resistance to oxidative challenge

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081766%3A_____%2F17%3A00469909" target="_blank" >RIV/68081766:_____/17:00469909 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11310/17:10338208 RIV/00216224:14310/17:00097562

Result on the web

<a href="http://dx.doi.org/10.1098/rspb.2016.2444" target="_blank" >http://dx.doi.org/10.1098/rspb.2016.2444</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1098/rspb.2016.2444" target="_blank" >10.1098/rspb.2016.2444</a>

Result language

angličtina

Original language name

Trade-off between carotenoid-based sexual ornamentation and sperm resistance to oxidative challenge

Original language description

It has been hypothesized that carotenoid-based sexual ornamentation signals male fertility and sperm competitive ability as both ornamentation and sperm traits may be co-affected by oxidative stress, resulting in positive covariation (the ‘redox-based phenotype-linked fertility hypothesis’, redox-based PLFH). On the other hand, the ‘sperm competition theory’ (SCT) predicts a trade-off between precopulatory and postcopulatory traits. Here, we manipulate oxidative status (using diquat dibromide) and carotenoid availability in adult zebra finch (Taeniopygia guttata) males in order to test whether carotenoid-based beak ornamentation signals, or is traded off against, sperm resistance to oxidative challenge. Initial beak colouration, but not its change during the experiment, was associated with effect of oxidative challenge on sperm velocity, such that more intense colouration predicted an increase in sperm velocity under control conditions but a decline under oxidative challenge. This suggests a long-term trade-off between ornament expression and sperm resistance to oxidative challenge. Shortening of the sperm midpiece following oxidative challenge further suggests that redox homeostasis may constrain sperm morphometry. Carotenoid supplementation resulted in fewer sperm abnormalities but had no effect on other sperm traits. Overall, our data challenge the redox-based PLFH, partially support the SCT and highlight the importance of carotenoids for normal sperm morphology.

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

10602 - Biology (theoretical, mathematical, thermal, cryobiology, biological rhythm), Evolutionary biology

Project

<a href="/en/project/GAP506%2F12%2F2472" target="_blank" >GAP506/12/2472: Post-copulatory sexual selection and the biology of sperm: within population processes and interspecific patterns in passerine birds</a><br>

Continuities

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

Publication year

2017

Confidentiality

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

Name of the periodical

Proceedings of the Royal Society. B - Biological Sciences

ISSN

0962-8452

e-ISSN

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Volume of the periodical

284

Issue of the periodical within the volume

1847

Country of publishing house

GB - UNITED KINGDOM

Number of pages

9

Pages from-to

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UT code for WoS article

000393414300014

EID of the result in the Scopus database

2-s2.0-85011101240