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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
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001-es BibID:	BIBFORM028107
Első szerző:	Moskát Csaba
Cím:	Post-ejection nest-desertion of common cuckoo hosts: a second defense mechanism or avoiding reduced reproductive success? / Csaba Moskát, Erik C. Rosendaal, Myra Boers, Anikó Zölei, Miklós Bán, Jan Komdeur
Dátum:	2010
ISSN:	0340-5443
Megjegyzések:	Hosts of the common cuckoo (Cuculus canorus), an avian brood parasite, develop antiparasite defense mechanisms to increase their reproductive success. Ejection of the parasite egg and desertion of the parasitized nest are the most typical adaptations in response to brood parasit- ism, but nest desertion may also occur in response to partial clutch reduction, independently from parasitism. Some great reed warblers (Acrocephalus arundinaceus) showed both mechanisms in the same incidence of cuckoo parasitism: in 18% of successful ejections of the parasite eggs, they deserted their nests. We studied if such cases of post-ejection nest-desertion are caused by brood parasitism or reduced clutch value. We experimentally parasitized clutches consisting of five or three host eggs with two painted conspecific eggs to mimic parasitic eggs, as multiple parasitism is frequent in the area. Although hosts ejected these parasitic eggs in both clutch categories (100% and 67% for the larger and smaller inital clutch sizes, respectively), we found that after manipulation, post- ejection nest-desertion frequently occurred at small (3-egg) clutches (40%), but rarely at large (5-egg) clutches (17%). The same phenomenon also occurred when unparasitized 3-egg clutches were reduced by two eggs, but not when 5-egg clutches were reduced in the same way. A logistic regression model revealed that only initial clutch size affected nest desertion of parasitized nests in our experiments. Therefore, we conclude that post-ejection nest-desertion is not a second antiparasite mechanism, which might serve as a redundant antiparasite defense, but a reaction to typically small and further decreased clutch size.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:	Behavioral Ecology And Sociobiology. - 65 : 5 (2010), p. 1045-1053. -
További szerzők:	Rosendaal, Erik C. Boers, Myra Zölei Anikó Bán Miklós (1975-) (biológus) Komdeur, Jan
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001-es BibID:	BIBFORM005419
Első szerző:	Moskát Csaba
Cím:	Experimental support for the use of egg uniformity in parasite egg discrimination by cuckoo hosts / Csaba Moskát, Jesús M. Avilés, Miklós Bán, Rita Hargitai, Anikó Zölei
Dátum:	2008
Megjegyzések:	Common cuckoo (Cuculus canorus) parasitism drastically reduces the reproductive success of their hosts and selects for host discrimination of cuckoo eggs. In a second stage of anti-parasite adaptation, once cuckoos can lay eggs that mimic those of their hosts, a high uniformity of host egg appearance within a clutch may favour cuckoo egg discrimination. Comparative evidence provides indirect support for this hypothesis although experimental support is currently lacking. Here, we studied the effect of experimentally decreased uniformity of host egg appearance on cuckoo egg discrimination by great reed warbler (Acrocephalus arundinaceus) hosts in a population in which long-term cuckoo parasitism has led to high levels of cuckoo?host egg mimesis. We manipulated host clutch uniformity by adding extra spots to fresh host eggs just after they were laid. Rejection of non-mimetic experimental eggs added to these nests was compared with those in control nests in which uniformity was not altered. Previously, by over-painting real spots in a control group of nests, we showed a negligible effect of our paints on hosts' perception of their eggs. We show that for the great reed warbler, non-mimetic experimental eggs were relatively more tolerated in experimental nests, i.e. with lower unifor- mity (40%) than in control nests (5%). This is the first experimental study, to our knowledge, which demonstrates a reduced discrimination of foreign eggs as a consequence of an increase of egg phenotypes variation perception in a cuckoo host.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:	Behavioral Ecology and Sociobiology. - 62 (2008), p. 1885-1890. -
További szerzők:	Avilés, Jesús M. Bán Miklós (1975-) (biológus) Hargitai Rita Zölei Anikó
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001-es BibID:	BIBFORM060674
Első szerző:	Zölei Anikó
Cím:	No change in common cuckoo parasitism and great reed warblers' egg rejection after seven decades / Anikó Zölei, Miklós Bán, Csaba Moskát
Dátum:	2015
ISSN:	0908-8857
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:	Journal Of Avian Biology. - 46 (2015), p. 1-7. -
További szerzők:	Bán Miklós (1975-) (biológus) Moskát Csaba
Internet cím:	DOI Intézményi repozitóriumban (DEA) tárolt változat
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