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1.

001-es BibID:BIBFORM096246
035-os BibID:(cikkazonosító)jeb242481 (WoS)000681398200012 (Scopus)85111512253
Első szerző:Lendvai Ádám Zoltán (biológus)
Cím:Effects of experimental increase in insulin-like growth factor 1 on feather growth rate, moult intensity and feather quality in a passerine bird / Ádám Z. Lendvai, Zsófia Tóth, Katharina Mahr, Gergely Osváth, Sarah Vogel-Kindgen, Bruno A. Gander
Dátum:2021
ISSN:0022-0949
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Journal Of Experimental Biology. - 224 : 14 (2021), p. 1-27. -
További szerzők:Tóth Zsófia (1991-) (biológus) Mahr, Katharina Osváth Gergely (1985-) (biológus) Vogel-Kindgen, Sarah Gander, Bruno A.
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2.

001-es BibID:BIBFORM028106
Első szerző:Moskát Csaba
Cím:Discordancy or template-based recognition? : Dissecting the cognitive basis of the rejection of foreign eggs in hosts of avian brood parasites / Csaba Moskát, Miklós Bán, Tamás Székely, Jan Komdeur, Rim W. G. Lucassen, Lotte A. van Boheemen, Márk E. Hauber
Dátum:2010
ISSN:0022-0949
Megjegyzések:Many avian hosts have evolved antiparasite defence mechanisms, including egg rejection, to reduce the costs of brood parasitism. The two main alternative cognitive mechanisms of egg discrimination are thought to be based on the perceived discordancy of eggs in a clutch or the use of recognition templates by hosts. Our experiments reveal that the great reed warbler (Acrocephalus arundinaceus), a host of the common cuckoo (Cuculus canorus), relies on both mechanisms. In support of the discordancy mechanism, hosts rejected their own eggs (13%) and manipulated ('parasitic') eggs (27%) above control levels in experiments when manipulated eggs were in the majority but when clutches also included a minority of own eggs. Hosts that had the chance to observe the manipulated eggs daily just after laying did not show stronger rejection of manipulated eggs than when the eggs were manipulated at clutch completion. When clutches contained only manipulated eggs, in 33% of the nests hosts showed rejection, also supporting a mechanism of template-based egg discrimination. Rejection using a recognition template might be more advantageous because discordancy-based egg discrimination is increasingly error prone with higher rates of multiple parasitism.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Journal Of Experimental Biology. - 213 : 11 (2010), p. 1976-1983. -
További szerzők:Bán Miklós (1975-) (biológus) Székely Tamás (1959-) (biológus) Komdeur, Jan Lucassen, Rim W. G. Boheemen, Lotte A. van Hauber, Mark E.
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3.

001-es BibID:BIBFORM018775
Első szerző:Pap Péter László (ökológus)
Cím:Carotenoids modulate the effect of coccidian infection on the condition and immune response in moulting house sparrows / Péter László Pap, Csongor István Vágási, Gábor Árpád Czirják, Adriana Titilincu, Adela Pintea, Zoltán Barta
Dátum:2009
Megjegyzések:In the present study, we experimentally manipulated coccidian parasitism and dietary carotenoid availability in a fully factorial experiment in male house sparrows (Passer domesticus Linnaeus), and tested whether carotenoid supplementation reduces the cost of parasitism in terms of condition, moult and immune responses. We found that coccidians have a significant but transient negative effect on body mass, which can be reduced if birds have access to carotenoid supplementation in their diet. Experimental manipulation had no significant effect on the moulting parameters of the birds measured following coccidian infestation and during the whole moulting period. Carotenoid supplementation increased the plasma carotenoid concentration in both infested and medicated birds treated with a coccidiostatic drug; however, after two months exposure to parasites, plasma carotenoid concentration increased only in the carotenoid-supplemented and medicated group whereas no difference was observed between the carotenoid-supplemented and infested and non-supplemented groups. On the contrary, coccidian infestation was not affected by carotenoid supplementation. Experimental infestation decreased the antibody response to sheep red blood cells (SRBCs), although no significant effect was observed in the capacity of the birds to respond to a mitogenic challenge with phytohemagglutinin. Within the experimentally infested groups birds with carotenoid-supplemented food tended to have an increased anti-SRBC humoral immune response. The positive correlation between coccidian infestation and the strength of the humoral immune response against SRBCs in the non-supplemented and infested groups indicates that this part of the immune system plays an important role in defence against these parasites.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
aviary, carotenoid supplementation, experimental infection, humoral immune response, Isospora, Passer domesticus.
Megjelenés:Journal of Experimental Biology. - 212 (2009), p. 3228-3235. -
További szerzők:Vágási Csongor István Czirják Gábor Árpád Titilincu, Adriana Pintea, Adela Barta Zoltán (1967-) (biológus, zoológus)
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4.

001-es BibID:BIBFORM086279
035-os BibID:(cikkazonosító)jeb219659 (WoS)000541830200015 (Scopus)85082146757
Első szerző:Rádai Zoltán (biológus)
Cím:Consequences of rapid development owing to cohort splitting: just how costly is it to hurry? / Zoltán Rádai, Johanna Kiss, Agnieszka Babczyńska, Gábor Kardos, Ferenc Báthori, Ferenc Samu, Zoltán Barta
Dátum:2020
ISSN:0022-0949
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Journal Of Experimental Biology. - 223 : 6 (2020), p. 1-15. -
További szerzők:Kiss Johanna (1989-) (zoológus) Babczyńska, Agnieszka Kardos Gábor (1974-) (szakorvos, klinikai mikrobiológus) Báthori Ferenc (1988-) (biológus) Samu Ferenc (ökológus) Barta Zoltán (1967-) (biológus, zoológus)
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5.

001-es BibID:BIBFORM107663
035-os BibID:(WOS)000397620100028 (Scopus)85016594854 (PUBMED)28183869
Első szerző:Ramenofsky, Marilyn
Cím:Behavioral and physiological traits of migrant and resident white-crowned sparrows: a common garden approach / Marilyn Ramenofsky, Andrew W. Campion , Jonathan H. Pérez, Jesse S. Krause, Zoltán Németh
Dátum:2017
ISSN:0022-0949
Megjegyzések:To accommodate a migratory life history, migrants express a greater number of physiological and behavioral stages per annum than residents and are thus considered to have higher finite state diversity (FSD). To investigate the physiological mechanisms and constraints associated with migration, direct comparison of two subspecies of white-crowned sparrow - migrant, Zonotrichia leucophrys gambelii, and resident, Z. l. nuttalli - were made under common garden conditions of photoperiod and housing, as birds progressed from winter through the vernal life history stages. We tested the hypothesis that migrants (higher FSD) respond differently than residents (lower FSD) to the initial predictive cue, photoperiod, to initiate and integrate the progression of vernal stages of prenuptial molt, migration and development of breeding. If differences in vernal phenology were noted, then the basis for the distinctions was considered genetic. Results indicate that (1) residents had a lower threshold to vernal photoperiod with elevations of plasma androgen, growth and development of reproductive structures preceding those of migrants; (2) only migrants displayed prenuptial molt, preparations for migration and migratory restlessness; and (3) neither baseline nor stress-induced plasma corticosterone differed across subspecies, suggesting energetic demands of the common garden were insufficient to induce a differential adrenocortical response in either subspecies, highlighting the impact of environmental conditions on corticosterone secretion. Thus, in a common garden experiment, Z. l. gambelii responds differently to the initial predictive cue, photoperiod, to initiate and execute the vernal stages of molt, migration and development of breeding in comparison to the shared stage of breeding with Z. l. nuttalli, confirming a genetic basis for the subspecies differences
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Finite state diversity
Flight muscle hypertrophy
Migratory restlessness
Prenuptial molt
Androgens
Corticosterone
Megjelenés:Journal Of Experimental Biology. - 220 : 7 (2017), p. 1330-1340. -
További szerzők:Campion, Andrew W. Pérez, Jonathan H. Krause, Jesse S. Németh Zoltán (1976-) (biológus)
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6.

001-es BibID:BIBFORM120372
Első szerző:Reda, Gebrehaweria Kidane (Phd hallgató)
Cím:Dietary restriction and life-history trade-offs: insights into mTOR pathway regulation and reproductive investment in Japanese quails / Gebrehaweria K. Reda, Sawadi F Ndunguru, Brigitta Csernus, Gabriella Gulyás, Renáta Knop,Csaba Szabó, Levente Czeglédi, Ádám Z. Lendvai
Dátum:2024
ISSN:0022-0949
Megjegyzések:Resources are needed for growth, reproduction and survival, and organisms must trade-off limited resources among competing processes. Nutritional availability in organisms is sensed and monitored by nutrient-sensing pathways that can trigger physiological changes or alter gene expression. Previous studies have proposed that one such signalling pathway, the mechanistic target of rapamycin (mTOR), underpins a form of adaptive plasticity when individuals encounter constraints in their energy budget. Despite the fundamental importance of this process in evolutionary biology, how nutritional limitation is regulated through the expression of genes governing this pathway and its consequential effects on fitness remains understudied, particularly in birds. We used dietary restriction to simulate resource depletion and examined its effects on body mass, reproduction and gene expression in Japanese quails (Coturnix japonica). Quails were subjected to feeding 20%, 30%, 40% restriction levels or ad libitum for two weeks. All restricted groups exhibited reduced body mass, whereas reductions in the number and mass of eggs were observed only under more severe restrictions. Additionally, dietary restriction led to decreased expression of mTOR and insulin-like growth factor 1 (IGF1), whereas the ribosomal protein S6 kinase 1 (RPS6K1) and autophagy-related genes (ATG9A and ATG5) were upregulated. The pattern in which mTOR respond to restriction was similar to what has been seen in body mass. Regardless of the treatment, proportionally higher reproductive investment was associated with individual variation in mTOR expression. These findings reveal the connection between dietary intake and the expression of mTOR and related genes in this pathway.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Journal Of Experimental Biology. - [Epub ahead of print] : - (2024), p. -. -
További szerzők:Ndunguru, Sawadi Fransisco (1980-) Csernus Brigitta (1991-) (élelmiszerbiztonsági és -minőségi mérnök) Gulyás Gabriella Knop Renáta (1983-) (állatorvos) Szabó Csaba Czeglédi Levente (1977-) (agrármérnök) Lendvai Ádám Zoltán (1977-) (biológus)
Pályázati támogatás:K139021
OTKA
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7.

001-es BibID:BIBFORM117213
Első szerző:Vágási Csongor István
Cím:Songbirds avoid the oxidative stress costs of high blood glucose levels: a comparative study / Csongor I. Vágási, Orsolya Vincze, Marie Adámková, Tereza Kauzálová, Ádám Z. Lendvai, Laura Pătraș, Janka Pénzes, Péter L. Pap , Tomáš Albrecht, Oldřich Tomášek
Dátum:2023
ISSN:0022-0949
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Journal Of Experimental Biology. - "Accepted by Publisher" : - (2023), p. -. -
További szerzők:Vincze Orsolya (1988-) (biológus) Adámková, Marie Kauzálová, Tereza Lendvai Ádám Zoltán (1977-) (biológus) Pătraş, Laura Pénzes Janka Pap Péter László (ökológus) Albrecht, Tomáš Tomášek, Oldřich
Pályázati támogatás:K139021
OTKA
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