Ultraviolet coloration of avian parasitic egg does not cue egg rejection in the common redstart host

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081766%3A_____%2F22%3A00559535" target="_blank" >RIV/68081766:_____/22:00559535 - isvavai.cz</a>
Result on the web
<a href="https://link.springer.com/article/10.1007/s10336-022-01991-4" target="_blank" >https://link.springer.com/article/10.1007/s10336-022-01991-4</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s10336-022-01991-4" target="_blank" >10.1007/s10336-022-01991-4</a>

Result language
angličtina
Original language name
Ultraviolet coloration of avian parasitic egg does not cue egg rejection in the common redstart host
Original language description
Avian brood parasite hosts can use distinct egg traits to recognize a parasitic egg. Previous studies suggested an important role of eggshell ultraviolet (UV) reflectance in rejection. According to the egg detectability hypothesis, natural selection might have selected for a conspicuous egg UV signal, especially in dark nest environments. We tested this hypothesis in a cavity nesting host by experimentally parasitizing a population of common redstarts breeding in Central Europe. We manipulated UV reflectance using egg models with enhanced UV and used models with UV characteristics similar to the host as a control treatment. We additionally manipulated nest light conditions by adjusting the entrance size of the nest-boxes, because dark environments have been suggested to affect detectability of an egg, particularly in UV light. Hosts rejected experimental eggs with similar probabilities in both UV treatments and also under different light conditions. Results of this study did not support the egg detectability hypothesis. Our conclusions on the role of egg UV for egg recognition and rejection emphasize how little we understand its function in cavity nesting hosts.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10615 - Ornithology

Project
<a href="/en/project/GA22-26812S" target="_blank" >GA22-26812S: Coevolutionary struggle between a highly virulent brood parasite and its major host</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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