About: Do common whitethroats (Sylvia communis) discriminate against alien eggs?

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About: Do common whitethroats (Sylvia communis) discriminate against alien eggs? Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	In a coevolutionary arms race between a brood parasite and its host, both species are expected to evolve adaptations and counteradaptations, such as egg mimicry and egg discrimination. The Whitethroat (Sylvia communis) is a regular Cuckoo (Cuculus canorus) host in some parts of its breeding range. We studied egg discrimination in the Whitethroat in the SE part of the Czech Republic in an area where the Whitethroat is parasitised only occasionally. To investigate responses to parasitic eggs, in 34 nests either a non-mimetic or a mimetic egg was added. All 21 non-mimetic eggs were ejected. Of the 13 mimetic eggs, 7 were ejected and 6 eggs were accepted. No significant differences were found in intraclutch variation in egg appearance between acceptors and rejecters. Ejected mimetic eggs, however, showed greater contrast with host eggs than did the mimetic eggs that were accepted. Our experiments show that Whitethroats are persistent rejecters of alien eggs at the study site. In a coevolutionary arms race between a brood parasite and its host, both species are expected to evolve adaptations and counteradaptations, such as egg mimicry and egg discrimination. The Whitethroat (Sylvia communis) is a regular Cuckoo (Cuculus canorus) host in some parts of its breeding range. We studied egg discrimination in the Whitethroat in the SE part of the Czech Republic in an area where the Whitethroat is parasitised only occasionally. To investigate responses to parasitic eggs, in 34 nests either a non-mimetic or a mimetic egg was added. All 21 non-mimetic eggs were ejected. Of the 13 mimetic eggs, 7 were ejected and 6 eggs were accepted. No significant differences were found in intraclutch variation in egg appearance between acceptors and rejecters. Ejected mimetic eggs, however, showed greater contrast with host eggs than did the mimetic eggs that were accepted. Our experiments show that Whitethroats are persistent rejecters of alien eggs at the study site. (en)
Title	Do common whitethroats (Sylvia communis) discriminate against alien eggs? Do common whitethroats (Sylvia communis) discriminate against alien eggs? (en)
skos:prefLabel	Do common whitethroats (Sylvia communis) discriminate against alien eggs? Do common whitethroats (Sylvia communis) discriminate against alien eggs? (en)
skos:notation	RIV/68081766:_____/03:67030059!RIV/2004/AV0/A67004/N
http://linked.open.../vavai/riv/strany	354;363
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA206/00/P046), P(KSK6005114), Z(AV0Z6093917)
http://linked.open...iv/cisloPeriodika	3
http://linked.open...vai/riv/dodaniDat	2004
http://linked.open...aciTvurceVysledku	Procházka, Petr Honza, Marcel
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav biologie obratlovců AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	604256
http://linked.open...ai/riv/idVysledku	RIV/68081766:_____/03:67030059
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	brood parasitism; Cuculus canorus; eggs (en)
http://linked.open.../riv/klicoveSlovo	brood parasitism eggs Cuculus canorus
http://linked.open...odStatuVydavatele	DE - Spolková republika Německo
http://linked.open...ontrolniKodProRIV	[C635B587846C]
http://linked.open...i/riv/nazevZdroje	Journal für Ornithologie
http://linked.open...in/vavai/riv/obor	EG
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...ocetUcastnikuAkce	0 (xsd:int)
http://linked.open...nichUcastnikuAkce	0 (xsd:int)
http://linked.open...vavai/riv/projekt	Biodiversity and functions of ecological systems Host response towards artificial cuckoo egg in relation to variation of eggs appearance
http://linked.open...UplatneniVysledku	2003
http://linked.open...v/svazekPeriodika	144
http://linked.open...iv/tvurceVysledku	Honza, Marcel Procházka, Petr
http://linked.open...n/vavai/riv/zamer	Diversity and life history of free-living vertebrates and implication of results in the strategy of conservation and sustainable management of natural resources
issn	0021-8375
number of pages	10 (xsd:int)

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