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Are blackcaps current winners in the evolutionary struggle against the common cuckoo?
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SYSNO ASEP 0103158 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve SCOPUS Title Are blackcaps current winners in the evolutionary struggle against the common cuckoo? Title Jsou pěnice černohlavé současnými vítězi v evolučním zápasu s kukačkou obecnou? Author(s) Honza, Marcel (UBO-W) RID, SAI, ORCID
Procházka, Petr (USMH-B)
Stokke, B. G. (NO)
Moksnes, A. (NO)
Roskaft, E. (NO)
Čapek Jr., Miroslav (UBO-W) RID, ORCID, SAI
Mrlík, Vojtěch (UBO-W)Source Title Journal of Ethology. - : Springer - ISSN 0289-0771
Roč. 22, č. 2 (2004), s. 175-180Number of pages 6 s. Language eng - English Country JP - Japan Keywords brood parasitism ; Cuculus canorus ; Sylvia atricapilla Subject RIV EG - Zoology R&D Projects GA206/00/P046 GA ČR - Czech Science Foundation (CSF) IAA6093203 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z6093917 - UBO-W EID SCOPUS 4344702342 Annotation Blackcaps Sylvia atricapilla reject artificial cuckoo eggs, and their eggs vary little in appearance within clutches, whereas among clutches eggs vary considerably. Low variation within clutches facilitates discrimination of parasitic eggs, whereas high variation among clutches makes it harder for the cuckoo to mimic the eggs of a certain host species. These traits have most probably evolved as counteradaptations against brood parasitism by the common cuckoo Cuculus canorus, even though blackcaps are not regularly parasitised today. In this study, we investigated how fine-tuned the rejection of parasitic eggs is in this species by introducing three types of eggs into their nests: a real non-mimetic egg the approximate size of a cuckoo egg, an artificial mimetic egg the size of a cuckoo egg and a real conspecific egg. Workplace Institute of Vertebrate Biology Contact Hana Slabáková, slabakova@ivb.cz, Tel.: 543 422 524 Year of Publishing 2005
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