Počet záznamů: 1
Egg discrimination in the Yellowhammer
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SYSNO ASEP 0101770 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve SCOPUS Název Egg discrimination in the Yellowhammer Překlad názvu Rozpoznávání vajec strnadem obecným Tvůrce(i) Procházka, Petr (USMH-B)
Honza, Marcel (UBO-W) RID, SAI, ORCIDZdroj.dok. Condor - ISSN 0010-5422
Roč. 106, č. 2 (2004), s. 405-410Poč.str. 6 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova brood parasitism ; reed warblers ; Emberiza citrinella Vědní obor RIV EG - Zoologie CEP IAA6093203 GA AV ČR - Akademie věd KSK6005114 GA AV ČR - Akademie věd CEZ AV0Z6093917 - UBO-W EID SCOPUS 2342582753 Anotace In a coevolutionary arms race between a brood parasite and its host, both species evolve adaptations and counteradaptations, such as egg mimicry and egg discrimination. The Yellowhammer (Emberiza citrinella) is a minor host of the Common Cuckoo (Cuculus canorus) in Europe. We studied egg discrimination in the Yellowhammer in the Czech Republic where it is parasitized only occasionally. To investigate host responses to parasitic eggs, we added either a non-mimetic (blue) or a mimetic (conspecific) egg to 50 nests. The hosts rejected nonmimetic eggs at a higher rate (92%) than mimetic eggs (32%). Neither intra-clutch variation nor contrast between mimetic and host eggs had a significant effect on rejection behavior. There is no evidence for intraspecific brood parasitism in this species. The ability to reject mimetic eggs has therefore most likely evolved as an adaptation against interspecific brood parasitism and may be the reason why the Yellowhammer is parasitized only occasionally. Pracoviště Ústav biologie obratlovců Kontakt Hana Slabáková, slabakova@ivb.cz, Tel.: 543 422 524 Rok sběru 2005
Počet záznamů: 1