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1.

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
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2.

001-es BibID:BIBFORM111735
035-os BibID:(WoS)000985005800001 (Scopus)85159430604
Első szerző:Kiss Johanna (zoológus)
Cím:Behavioural repertoire and the effect of male removal in a geotrupid beetle with parental care / Kiss, J., Rosa, M. E., Rácz, R., Kosztolányi, A., Barta, Z.
Dátum:2023
ISSN:0952-8369
Megjegyzések:Although biparental care is thought to be rare among insects, it has evolved independently numerous times resulting in diverse forms and varying levels of parental involvement. Several theoretical studies address potential factors promoting biparental care in beetles; however, empirical studies target principally only species of Scarabaeidae and Silphidae families. Here, we investigated the behavioural repertoire of the breeding pairs in two natural populations of a geotrupid beetle Lethrus apterus with parental care. Changes in female care as a response to the male`s absence were also investigated by experimentally removing males from pairs. We found that males spend the majority of their time at the nest entrance, while females leave their nest and collect leaves at a significantly higher rate than males. We also showed that males often desert their nests and were usually replaced by new males in a short time. The desertion of males, however, does not seem to influence females` behaviour. These findings indicate that L. apterus may have a dynamic mating system with typically short-term mate fidelity. Furthermore, our results have advanced our understanding of parental roles and nesting behaviour and contributed to the description of the distinct roles of parents in different phases of nesting events in L. apterus beetles.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
beetles
cooperation
nesting behaviour
male removal
parental care
sex roles
Lethrus apterus
parental behaviour
Megjelenés:Journal Of Zoology. - [Epub ahead of print] (2023), p. 1-12. -
További szerzők:Rosa Márta Erzsébet Rácz Rita (1989-) (biológus) Kosztolányi András (1971-) (biológus) Barta Zoltán (1967-) (biológus, zoológus)
Pályázati támogatás:K112670
Egyéb
OKTF-KP/791-51/2016
Egyéb
TKP2021-NKTA-32
Egyéb
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DOI
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3.

001-es BibID:BIBFORM018992
Első szerző:Pap Péter László (ökológus)
Cím:Diet quality affects postnuptial molting and feather quality of the house sparrow (Passer domesticus) : interaction with humoral immune function? / Péter László Pap, Csongor István Vágási, Gábor Árpád Czirják, Zoltán Barta
Dátum:2008
ISSN:0008-4301
Megjegyzések:We investigated the effects of nutritional limitation, humoral immune activation, and their interaction on postnuptial molting of aviary-kept house sparrows (Passer domesticus (L., 1758. In a 2*2 experimental design, we measured the progress of molting and the quality of feathers produced during molting by house sparrow exposed to different diet qualities (high and low9 and humoral immune activation with sheep red blood cells (SRBC). Food quality, but not the activation of humoral immunity, affected significantly the body mass and the process of molting.Sparrows feeding on low-quality food had decreased body mass and longer molts than the high-quality group.Low-quality food, but not the activation of humoral immunity, reduced significantly the length and mass (i.e.,the quality) of primaries grown during molting. birds responded significantly to injection with SRBC compared with the control group, but the immune response was similar between nutritional groups. The absence of a negative effect of humoral immunity on molting in house sparrows might be related to the low energy and nutritional requirements of mounting and maintaining a humoral immune response.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Canadian Journal of Zoology. - 86 : 8 (2008), p. 834-842. -
További szerzők:Vágási Csongor István Czirják Gábor Árpád Barta Zoltán (1967-) (biológus, zoológus)
Internet cím:DOI
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4.

001-es BibID:BIBFORM087510
Első szerző:Rosa Márta Erzsébet
Cím:Size-dependent investment in tusk length, testis size and sperm length in a biparental geotrupid beetle / M. E. Rosa, J. Kiss, Z. Barta, A. Kosztolányi
Dátum:2019
ISSN:0952-8369
Megjegyzések:Males of extreme small or large sizes often experience different levels of pre- and postcopulatory sexual selection that result in alternative ways to gain fertilization success. Here, we investigated such alternative mating tactics in Lethrus apterus, a biparental geotrupid beetle species with noticeable intermale size variation by comparing tusk (mandibular process) length, testis size and sperm length between large and small males. Firstly, we demonstrated evidence for male polymorphism as extremely large males had longer tusks relative to their body size than extremely small individuals. Secondly, large males had bigger testes than small males throughout the breeding season, however, a significant decrease was observed overtime in large but not in small individuals. Thirdly, sperm length did not differ between the two size categories. Although these results do not explain how the observed large body size variation can be maintained in L. apterus, the non allo-metric relationship found between tusk length and body size and the lower decrease in testis size over the breeding season in case of small individuals might refer to the presence of alternative mating tactics in this species.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
body size
sperm competition
reproductive strategies
insects
Geotrupidae
polymorphism
testis size
Lethrus apterus
Megjelenés:Journal of Zoology. - 309 : 2 (2019), p. 106-113. -
További szerzők:Kiss Johanna (1989-) (zoológus) Barta Zoltán (1967-) (biológus, zoológus) Kosztolányi András (1971-) (biológus)
Pályázati támogatás:EFOP-3.6.1-16-2016-00022
EFOP
NKFIH K112670
egyéb
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DOI
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