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1.

001-es BibID:BIBFORM028112
Első szerző:Anderson, Michael G.
Cím:Egg Eviction Imposes a Recoverable Cost of Virulence in Chicks of a Brood Parasite / Michael G. Anderson, Csaba Moskát, Miklós Bán, Tomáš Grim, Phillip Cassey, Mark E. Hauber
Dátum:2009
ISSN:1932-6203
Megjegyzések:Background: Chicks of virulent brood parasitic birds eliminate their nestmates and avoid costly competition for foster parental care. Yet, efforts to evict nest contents by the blind and naked common cuckoo Cuculus canorus hatchling are counterintuitive as both adult parasites and large older cuckoo chicks appear to be better suited to tossing the eggs and young of the foster parents. Methodology/Principal Findings: Here we show experimentally that egg tossing imposed a recoverable growth cost of mass gain in common cuckoo chicks during the nestling period in nests of great reed warbler Acrocephalus arundinaceus hosts. Growth rates of skeletal traits and morphological variables involved in the solicitation of foster parental care remained similar between evictor and non-evictor chicks throughout development. We also detected no increase in predation rates for evicting nests, suggesting that egg tossing behavior by common cuckoo hatchlings does not increase the conspicuousness of nests. Conclusion: The temporary growth cost of egg eviction by common cuckoo hatchlings is the result of constraints imposed by rejecter host adults and competitive nestmates on the timing and mechanism of parasite virulence.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Plos One. - 4 : 11 (2009), p. 1-7. -
További szerzők:Moskát Csaba Bán Miklós (1975-) (biológus) Grim, Tomáš Cassey, Phillip Hauber, Mark E.
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2.

001-es BibID:BIBFORM028111
Első szerző:Avilés, Jesús M.
Cím:Common Cuckoos (Cuculus canorus) Do Not Rely on Indicators of Parental Abilities When Searching for Host Nests: The Importance of Host Defenses / Jesús M. Avilés, Csaba Moskát, Miklós Bán, Rita Har gitai, Deseada Parejo
Dátum:2009
ISSN:0004-8038
Megjegyzések:There is widespread evidence that individuals within and among host populations are not evenly parasitized by Common Cuckoos (Cuculus canorus). We first investigated whether the song and nest size of a host species, the Great Reed Warbler (Acrocephalus arundinaceus), reveal information on parental abilities and level of defense against Common Cuckoos. Second, we analyzed whether female Common Cuckoos' preference for host nests is predicted by the degree of song expression and the nest size of the host. Earlier-breeding hosts built bigger nests, were more active singers, and had less rich syllable repertoires than late breeders. Host nestlings raised in a big nest received more feedings than those raised in a small nest. Host males that were active singers were paired with females that built bigger nests. All host pairs rejected nonmimetic artificial eggs, but those with a big nest were more prone to reject natural Common Cuckoo eggs. Thus, Great Reed Warbler pairs with a big nest were more willing to feed nestlings, but also had higher discriminatory abilities against Common Cuckoo eggs, than those with a small nest. These findings, and female Common Cuckoos' inability to capture the information provided by Great Reed Warblers' sexual signals, may explain why the females followed a simple rule of selecting the more visible host nests in the population.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:The auk. - 126 : 2 (2009), p. 431-438. -
További szerzők:Moskát Csaba Bán Miklós (1975-) (biológus) Hargitai Rita Parejo, Deseada
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3.

001-es BibID:BIBFORM078303
Első szerző:Bán Miklós (biológus)
Cím:Return migration of Common Cuckoos (Cuculus canorus) between breeding grounds in Hungary and wintering grounds in Africa as documented by non-PTT GPS technology / Bán Miklós, Moskát Csaba, Fülöp Attila, Hauber Márk E.
Dátum:2018
ISSN:0021-8375 2193-7206
Megjegyzések:We tagged 12 adult Common Cuckoos (Cuculus canorus) with non-platform terminal transmitter (non-PTT) GPS-UHF telemetry at their breeding grounds in Hungary. One male and two female Cuckoos (one of them twice) were again observed in subsequent years, and GPS fixes documented their migration routes to and from Africa, as far south as Namibia. All four routes showed the species-typical clockwise loop migration. Although currently non-PPT GPS tracking with remotely downloadable data as an ornithological method is primarily suitable to map home ranges of birds, it could be a complement to PTT technology in migration research, especially for delivery of higher spatial accuracy.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Journal of Ornithology. - 159 : 2 (2018), p. 337-344. -
További szerzők:Moskát Csaba Fülöp Attila (1987-) (biológus) Hauber, Mark E.
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4.

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.
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5.

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
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6.

001-es BibID:BIBFORM028110
Első szerző:Birkhead, T. R.
Cím:Internal incubation and early hatching in brood parasitic birds / T. R. Birkhead, N. Hemmings, C. N. Spottiswoode, O. Mikulica, C. Moskát, M. Bán, K. Schulze-Hagen
Dátum:2010
ISSN:0962-8452
Megjegyzések:The offspring of brood parasitic birds benefit from hatching earlier than host young. A proposed but little-known strategy to achieve this is 'internal incubation', by retaining the egg in the oviduct for an additional 24 h. To test this, we quantified the stage of embryo development at laying in four brood parasitic birds (European cuckoo, Cuculus canorus; African cuckoo, Cuculus gularis; greater honeyguide, Indicator indicator; and the cuckoo finch, Anomalospiza imberbis). For the two cuckoos and the honeyguide, all of which lay at 48 h intervals, embryos were at a relatively advanced stage at laying; but for the cuckoo finch (laying interval: 24 h) embryo stage was similar to all other passerines laying at 24 h intervals. The stage of embryo development in the two cuckoos and honeyguide was similar to that of a non-parasitic species that lay at an interval of 44-46 h, but also to the eggs of the zebra finch Taeniopygia guttata incubated artificially at body temperature immediately after laying, for a further 24 h. Comparison with the zebra finch shows that internal incubation in the two cuckoos and honeyguide advances hatching by 31 h, a figure consistent with the difference between the expected and the observed duration of incubation in the European cuckoo predicted from egg mass. Rather than being a specific adaptation to brood parasitism, internal incubation is a direct consequence of a protracted interval between ovulation (and fertilization) and laying, but because it results in early hatching may have predisposed certain species to become brood parasitic.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Proceedings of the Royal Society. Series B. Biological sciences. - 278 : 1708 (2010), p. 1019-1024. -
További szerzők:Hemmings, N. Spottiswoode, C. N. Mikulica, O. Moskát Csaba Bán Miklós (1975-) (biológus) Schulze-Hagen, K.
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7.

001-es BibID:BIBFORM097704
Első szerző:Elek Z.
Cím:Call rate in Common Cuckoos does not predict body size and responses to conspecific playbacks / Elek Zoltán, Bán Miklós, Fülöp Attila, Marton Attila, Hauber Márk E., Moskát Csaba
Dátum:2021
ISSN:0021-8375 2193-7206
Megjegyzések:The brood parasitic Common Cuckoo Cuculus canorus is best known for its two-note "cu-coo" call which is almost continuously uttered by male during the breeding season and can be heard across long distances in the field. Although the informative value of the cuckoo call was intensively investigated recently, it is still not clear whether call characteristic(s) indicate any of the phenotypic traits of the respective vocalising individuals. To fill this gap, we studied whether the call rate of male cuckoos (i.e., the number of calls uttered per unit of time) provides information on their body size, which might be a relevant trait during intrasexual territorial conflicts. We captured free-living male cuckoos and measured their body size parameters (mass, wing, tail and tarsus lengths). Each subject was then radio-tagged, released, and its individual "cu-coo" calls were recorded soon after that in the field. The results showed that none of the body size parameters covaried statistically with the call rates of individual male Common Cuckoos. In addition, we experimentally tested whether the "cu-coo" call rates affect behavioural responses of cuckoos using playbacks of either a quicker or a slower paced call than the calls with natural rates. Cuckoos responded similarly to both types of experimental playback treatments by approaching the speaker with statistically similar levels of responses as when presented with calls at the natural rate. We conclude that male Common Cuckoos do not advertise reliable information acoustically regarding their body size, and so, cuckoo calls are neither useful to characterize cuckoos' phenotypic traits directly nor to indicate environmental quality indirectly.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Call rate
Body size
Playback
Territorial signalling
Megjelenés:Journal Of Ornithology. - 162 : 4 (2021), p. 1183-1192. -
További szerzők:Bán Miklós (1975-) (biológus) Fülöp Attila (1987-) (biológus) Marton Attila (1990-) (biológus) Hauber, Mark E. Moskát Csaba
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8.

001-es BibID:BIBFORM062203
Első szerző:Geltsch Nikoletta
Cím:When should Common Cuckoos Cuculus canorus lay their eggs in host nests? / Nikoletta Geltsch, Miklós Bán, Mark E. Hauber, Csaba Moskát
Dátum:2016
ISSN:0006-3657
Megjegyzések:Capsule Brood parasitic Common Cuckoo Cuculus canorus chicks hatch erlier than the nestlingsof their Great Reed Warbler Acrocephalus arundinaceus hosts, but hatching priority is less consistent whwn Cuckoo eggs are laid after the onset of host incubation.Aim To reveal by field observations what the optimal stage is for Cuckoos to lay their eggs in relation to the host laying cycle to ensure prior hatching of the parasitic chicks.Methods We monitored the hatching of Cuckoo chicks in relation to the hosts' laying stage at which the cuckoo eggs appeared and also monitored host incubation behaviour.Results GreatReed Warblers incubated more on day 5 after the host's onset of laying relative to day 3. All Cuckoo eggs hatched earlier htan hosts when they were laid prior to the onset of host incubation (day 4). Cuckoo eggs also maintained hatching priority in about 2/3 of the nests when laid on days 5-6.Conclusions Most Cuckoo eggs are laid prior to the onset of host incubation and this, together with other adaptive mechanisms, ensures the prior hatching of Cuckoo eggs. Cuckoo eggs laid after the onset of incubation lose the advantage of prior hatching in approximately 30% of nests.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Élettudományok - Biológiai tudományok
Megjelenés:Bird Study 63 : 1 (2016), p. 46-51. -
További szerzők:Bán Miklós (1975-) (biológus) Hauber, Mark E. Moskát Csaba
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9.

001-es BibID:BIBFORM042542
Első szerző:Hargitai Rita
Cím:Variation in Plasma Oxidative Status and Testosterone Level in Relation to Egg-Eviction Effort and Age of Brood-Parasitic Common Cuckoo Nestlings / Rita Hargitai, David Costantini, Csaba Moskát, Miklós Bán, Jaime Muriel, Mark E. Hauber
Dátum:2012
ISSN:0010-5422
Megjegyzések:To avoid competition for parental care, brood-parasitic Common Cuckoo (Cuculus canorus)nestlings evict all of the host's eggs and nestlings within a few days after hatching. Little is known about the physiological effects of eviction behavior on the cuckoo nestling's oxidative balance or about age-related variation in plasma oxidative status and testosterone level of developing birds. We examined whwther the cuckoo nestling' plasma oxidative status was related to prior effort in eviction and quantified variation in the level of reactive oxygen metabolites, of nonenzymatic antioxidant capacity, and of testosterone concentration in plasma at various phases of the cuckoo's development. Levels of both reactive oxygen metabolites and antioxidant capacity were greater in older than in younger nestlings, suggesting that younger nestlings effectively counterbalance their increased production of free radicals, whereas, near fledging, levels of reactive oxygen metabolites increase despite improved antioxidant capacity. Possibly, overall energy expenditure increases with age and elevates the production of reactive oxygen species to a rate higher than what the antioxidant system could eliminate. Plasma testosterone level was the highest at nestling's intermediate phase of growth. High levels of testosterone may be required during the period of fastest growth, and when the growth rate levels off near fledging, testosterone levels may also decline. Cuckoo chicks that evicted more host eggs from steeper nests had higher plasma levels of reactive oxygen metabolites shortly after the eviction period, suggesting that eviction is costly in terms of an increased level of oxidative stress.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
antioxidant capacity
brood parasitism
eviction behavior
oxidative stress
plasma testosterone
Élettudományok - Biológiai tudományok
Megjelenés:Condor. - 114 : 4 (2012), p. 782-791. -
További szerzők:Costantini, David Moskát Csaba Bán Miklós (1975-) (biológus) Muriel, Jaime Hauber, Mark E.
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10.

001-es BibID:BIBFORM028109
Első szerző:Hargitai Rita
Cím:Eggshell characteristics and yolk composition in the common cuckoo Cuculus canorus: are they adapted to brood parasitism? / Rita Hargitai, Csaba Moskát, Miklós Bán, Diego Gil, Isabel López-Rull, Emese Solymos
Dátum:2010
ISSN:0908-8857
Megjegyzések:The developmental rate of cuckoo embryos and their hatching size is greater than that of host species, which may require more nutrient resources in the egg and more intensive gas exchange during development. In the present study, we compared various egg characteristics of a brood parasite, the common cuckoo Cuculus canorus, and its frequent host, the great reed warbler Acrocephalus arundinaceus. As maternally-derived testosterone is known to enhance growth rate of embryos and hatchlings, cuckoo eggs are expected to contain higher concentration of testosterone than host eggs. In addition, we expected higher concentration of antioxidants in cuckoo eggs to protect embryos from oxidative stress associated with accelerated growth. Our results showed that cuckoo eggs had thicker shells and higher pore density than great reed warbler eggs. Yolk was significantly heavier in cuckoo eggs and contained higher concentrations of carotenoids and vitamin E, however, yolk androgen and immunoglobulin concentrations were lower in cuckoo eggs as compared to great reed warbler eggs. We also examined whether eggshell colour was associated to egg quality, and detected a positive association between blue-green chroma and yolk antioxidant concentration in both species, suggesting that eggshell colour reflects the antioxidant investment of the female into the eggs. Our results suggest that cuckoo females increase the size, growth rate and competitive ability of their young by providing them with more nutrients and more dietary antioxidants for embryonic development, and not through elevated yolk testosterone or antibody levels. In addition, increased porosity of cuckoo eggshells may allow embryos to develop more rapidly because of a greater capacity of gas exchange.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Journal Of Avian Biology. - 41 : 2 (2010), p. 177-185. -
További szerzők:Moskát Csaba Bán Miklós (1975-) (biológus) Gil, Diego López-Rull, Isabel Solymos Emese
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11.

001-es BibID:BIBFORM057523
Első szerző:Hauber, Mark E.
Cím:The Value of Artificial Stimuli in Behavioral Research : Making the Case for Egg Rejection Studies in Avian Brood Parasitism / Márk E. Hauber, Lainga Tong, Miklós Bán, Rebecca Croston, Tomáš Grim, Geoffrey I. N. Waterhouse, Matthew D. Shawkey, Andrew B. Barron, Csaba Moskát
Dátum:2015
ISSN:0179-1613
Megjegyzések:Experimentation is at the heart of classical and modern behavioral ecologyresearch. The manipulation of natural cues allows us to establish causa-tion between aspects of the environment, both internal and external toorganisms, and their effects on animals' behaviors. In recognition systemsresearch, including the quest to understand the coevolution of sensorycues and decision rules underlying the rejection of foreign eggs by hosts ofavian brood parasites, artificial stimuli have been used extensively, butnot without controversy. In response to repeated criticism about the valueof artificial stimuli, we describe four potential benefits of using them inegg recognition research, two each at the proximate and ultimate levels ofanalysis: (1) the standardization of stimuli for developmental studies and(2) the disassociation of correlated traits of egg phenotypes used for sensory discrimination, as well as (3) the estimation of the strength of selection on parasitic egg mimicry and (4) the establishment of the evolved limits of sensory and cognitive plasticity. We also highlight constraints ofthe artificial stimulus approach and provide a specific test of whetherresponses to artificial cues can accurately predict responses to naturalcues. Artificial stimuli have a general value in ethological research beyondresearch in brood parasitism and may be especially critical in field studiesinvolving the manipulation of a single parameter, where other, confoundingvariables are difficult or impossible to control experimentally or statistically.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
artificial stimuli
brood parasitism
egg rejection
recognition systems
research methods
unnatural
Élettudományok - Biológiai tudományok
Megjelenés:Ethology 121 : 6 (2015), p. 521-528. -
További szerzők:Tong, Lainga Bán Miklós (1975-) (biológus) Croston, Rebecca Grim, Tomáš Waterhouse, Geoffrey I. N. Shawkey, Matthew D. Barron, Andrew B. Moskát Csaba
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12.

001-es BibID:BIBFORM005420
Első szerző:Hauber, Mark E.
Cím:Experimental shift in hosts acceptance threshold of inaccurate-mimic brood parasite eggs / Márk E. Hauber, Csaba Moskát and Miklós Bán
Dátum:2006
Megjegyzések:Hosts are expected to evolve resistance stra- tegies that efficiently detect and resist exposure to virulent parasites and pathogens. When rec- ognition is not error-proof, the acceptance threshold used by hosts to recognize parasites should be context dependent and become more restrictive with increasing predictability of parasitism. Here, we demonstrate that decisions of great reed warblers Acrocephalus arundinaceus to reject parasitism by the com- mon cuckoo Cuculus canorus vary adaptively within a single egg-laying bout. Hosts typically accept one of their own eggs with experimen- tally added spots and the background colour left visible. In contrast, hosts reject such spotted eggs when individuals had been previously exposed to and rejected one of their own eggs whose background colour had been entirely masked. These results support patterns of adaptive modulation of antiparasitic strategies through shifts in the acceptance threshold of hosts and suggest a critical role for experience in the discrimination decisions between inac- curate-mimic parasite eggs and hosts' own eggs.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Biology Letters. - 2 (2006), p. 177-180. -
További szerzők:Bán Miklós (1975-) (biológus) Moskát Csaba
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