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001-es BibID:	BIBFORM051401
Első szerző:	Moskát Csaba
Cím:	How to Spot a Stranger's Egg? : a Mimicry-Specific Discordancy Effect in the Recognition of Parasitic Eggs / Csaba Moskat, Aniko Zölei, Mikl os Bán, Zoltan Elek, Lainga Tong, Nikoletta Geltsch, Mark E. Haube
Dátum:	2014
ISSN:	0179-1613
Megjegyzések:	Egg discrimination by hosts is an antiparasitic defence to reject foreign eggsfrom the nest. Even when mimetic, the presence of brood parasitic egg(s)typically alters the overall similarity of all eggs in a clutch, producing a dis-cordant clutch compared to more homogenous clutches of composed onlyof hosts' own eggs. In multiple parasitism, the more foreign eggs are laidin the nest, the more heterogeneous the overall clutch appears. Perceptualfilters and recognition templates cannot explain the known pattern oflower rejection rates of foreign eggs in multiple vs. single parasitism. Wetherefore assessed the role of clutch homogeneity and manipulated thecolour of one or more eggs in the clutches of great reed warbler (Acroceph-alus arundinaceus) hosts of common cuckoos (Cuculus canorus). Varying thecolours of both the majority and the minority eggs caused predictableshifts in the rejection of the focal egg(s), and ejection rates of the minorityegg colour consistently increased but only when it belonged to a moremimetic egg colour, relative to the less mimetic colour of majority eggs.The results imply that in addition to sensory filters, and template-basedcognitive decision rules, discordancy-based rejection is affected by theoverall clutch appearance and interacts with specific colours varying inthe extent of mimicry, to contribute to the recognition decisions of hosts to reject parasitic eggs.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban brood parasitism, cuckoo, great reed warbler, egg discrimination, clutch characteristics, discordancy Élettudományok - Biológiai tudományok
Megjelenés:	Ethology. - 120 (2014), p. 1-11. -
További szerzők:	Zölei Anikó Bán Miklós (1975-) (biológus) Elek Z. Tong, Lainga Geltsch Nikoletta Hauber, Mark E.
Pályázati támogatás:	MTA-DE Lendület MTA Viselkedésökológiai Kutatócsoport
Internet cím:	Intézményi repozitóriumban (DEA) tárolt változat DOI
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