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001-es BibID:	BIBFORM049459
Első szerző:	Bán Miklós (biológus)
Cím:	Simultaneous viewing of own and parasitic eggs is not required for egg rejection by a cuckoo host / Miklós Bán, Csaba Moskát, Zoltán Barta, Márk E. Haube
Dátum:	2013
ISSN:	1045-2249
Megjegyzések:	Many hosts have evolved diverse cognitive mechanism to recognize and reduce the cost of social parasitism. For example, great reed warblers Acrocephalus arundinaceus can accurately reject closely mimetic eggs of brood parasitic common cuckoos Cuculus canorus. Yet, these same hosts are less effective at identifying and rejecting parasitism when the clutch is parasitized by multiple cuckoo eggs, suggesting a role for discordancy (the rejection of the egg type in the minority of the clutch) and/or online self-referent phenotype matching (the simultaneous viewing of cuckoo and own egg in the nest) to reject foreign egg. We tested whether the presence of host's own eggs is required for the discrimination of foreign eggs by dyeing hosts' own eggs with one of several colors so that clutches contained (a) 1 dyed and 4 unmanipulated eggs, (b) 3 dyed and 2 unmanipulated eggs, or 5 eggs dyed either (c1) differently or (c2) similarly. Rejection rates of dyed eggs varied widely between different colors and were highest in treatment (a), with 1 dyed egg, compared with treatments with the majority (b) or all (c1 and c2) dyed eggs. However, relative rejection rates of dyed eggs were also consistent among specific colors across treatments, including (c1) and (c2), where no unmanipulated own eggs were available for viewing and irrespectiveof whether eggs were dyed all different colors (c1) or the same colors (c2). We conclude that these hosts can rely on comparisons of foreign egg colors against an internal recognition template of acceptable (own) egy phenotypes.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban brood parasitism egg recognition egg rejection multiple parasitism phenotype matching recognition template Élettudományok - Biológiai tudományok
Megjelenés:	Behavioral Ecology. - 24 : 4 (2013), p. 1014-1021. -
További szerzők:	Moskát Csaba Barta Zoltán (1967-) (biológus, zoológus) Hauber, Mark E.
Pályázati támogatás:	MTA-DE Lendület MTA Viselkedésökológiai Kutatócsoport
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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001-es BibID:	BIBFORM028105
Első szerző:	Bán Miklós (biológus)
Cím:	The analysis of common cuckoo's egg shape in relation to its hosts' in two geographically distant areas / Miklós Bán, Zoltán Barta, Antonio R. Munoz, Fugo Takasu, Hiroshi Nakamura, Csaba Moskát
Dátum:	2011
Megjegyzések:	Evolutionary adaptations are required by common cuckoos Cuculus canorus to match host eggs. Hosts may discriminate against alien eggs; hence, accurate matching of the parasite egg to the hosts' is essential. Egg shape is the least-studied component of egg mimicry, and it may also have other functions: an optimal egg shape is necessary for effective incubation. For this reason, cuckoo eggs may show a wide range of variations in shape to a set of host species. Here, we compare cuckoo and host eggs by using egg shape parameters in two distant areas: from the nests of great reed warblers Acrocephalus arundinaceus, robins Erithacus rubecula and marsh warblers Acrocephalus palustris in Hungary, and oriental reed warblers Acrocephalus orientalis, bull-headed shrikes Lanius bucephalus and black-faced buntings Emberiza spodocephala from Japan. Our results suggest the lack of evolutionary adaptation of different cuckoo gentes to their corresponding hosts in terms of egg shape. However, our analyses revealed that cuckoo eggs showed a geographical difference in egg shape.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban Egészség- és Környezettudomány
Megjelenés:	Journal of Zoology. - 284 : 2 (2011), p. 77-83. -
További szerzők:	Barta Zoltán (1967-) (biológus, zoológus) Munoz, Antonio R. Takasu, Fugo Nakamura, Hiroshi Moskát Csaba
Pályázati támogatás:	TÁMOP-4.2.1/B-09/1-KONV-2010-0007 TÁMOP Viselkedésökológiai Kutatócsoport
Internet cím:	DOI Intézményi repozitóriumban (DEA) tárolt változat
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001-es BibID:	BIBFORM042011
Első szerző:	Moskát Csaba
Cím:	Cuckoo parasitism on two closely-related Acrocephalus warblers in distant areas: a case of parallel coevolution? / Csaba Moskát, Fugo Takasu, A. Roman Muñoz, Hiroshi Nakamura, Miklós Bán, Zoltán Barta
Dátum:	2012
ISSN:	1674-7674
Megjegyzések:	Common Cuckoos (Cuculus canorus) parasitize nests of small passerines. The Cuckoochicks cause the death of their nest-mates when evicting eggs or nestlings from the nests; consequently,hosts suffer from a high loss of reproduction. Host adaptations against parasitism, e.g., byegg discrimination behavior, and cuckoo counter-adaptations to hosts, e.g., by mimetic eggs, are oftenregarded as a result of the arms race between the two interacting species. In Hungary Great ReedWarblers (Acrocephalus arundinaceus) are the main hosts of cuckoos, suffering from heavy parasitism(ca. 40-65%). The Oriental Reed Warbler (A. orientalis), formerly a subspecies of the Great ReedWarbler (A. a. orientalis), is also a highly parasitized host in Japan (25-40%). We compared maincharacteristics of Cuckoo parasitism in these two distant areas from the Western and Eastern Palearcticby comparing cuckoo egg mimicry. We measured color characteristics of host and parasitic eggsby spectrophotometer. Visual modeling revealed lower chromatic distances between Cuckoo and hosteggs in Hungary than in Japan, but high variation both in host and Cuckoo eggs may cause matchingproblems in Hungary. Achromatic (brightness) difference between host and Cuckoo eggs were lowerin Japan than in Hungary, and it proved to be the most important factor affecting egg rejection. Hostsrejected Cuckoo eggs at similar frequencies (37% and 35% in Hungary and Japan, respectively). Hostadaptation, i.e., egg rejection behavior, seems to be preceding Cuckoo counter-adaptations to hosts inJapan. We suggest that the Cuckoo-Great/Oriental Reed Warbler relationships developed in alternativeways in Japan and Hungary, and they represent different stages of their arms race.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk Acrocephalus arundinaceus Acrocephalus orientalis arms race brood parasitism Cuculus canorus egg discrimination parallel coevolution Élettudományok - Biológiai tudományok
Megjelenés:	Chinese Birds. - 3 : 4 (2012), p. 320-329. -
További szerzők:	Takasu, Fugo Muñoz, A. Roman Nakamura, Hiroshi Bán Miklós (1975-) (biológus) Barta Zoltán (1967-) (biológus, zoológus)
Internet cím:	Intézményi repozitóriumban (DEA) tárolt változat DOI
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001-es BibID:	BIBFORM022984
Első szerző:	Moskát Csaba
Cím:	Adaptations by Great Reed Warblers to Brood Parasitism : A Comparison of Populations in Sympatry and Allopatry with the Common Cuckoo / C. Moskát, J. Szentpéteri, Z. Barta
Dátum:	2002
Megjegyzések:	population, but not in the Greek population. Spottedness of eggs were similar in both populations. Generally, a tendency for a higher interclutch variation was found in Hungary. Intraclutch variation was more similar in the two populations, but for the colour variables it showed a lower value in Hungary than in Greece. The heavy cuckoo parasitism in Hungary is suggested to be the main cause for the increased interclutch variation in relation to intraclutch variation in egg appearance among great reed warbler clutches. The high interclutch variation reduces the chance that the parasite egg's appearance matches that of the hosts', which facilitates hosts' egg discrimination.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban brood parasitism adaptation egg rejection interclutch variation Cuculus canorus Acrocephalus arundinaceus.
Megjelenés:	Behaviour. - 139 : 10 (2002), p. 1313-1329. -
További szerzők:	Szentpéteri J. Barta Zoltán (1967-) (biológus, zoológus)
Internet cím:	Intézményi repozitóriumban (DEA) tárolt változat
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