@article{MTMT:30339265,
	title = {Longevity and life history coevolve with oxidative stress in birds},
	url = {https://m2.mtmt.hu/api/publication/30339265},
	author = {Vágási, István Csongor and Vincze, Orsolya and Pătraș, Laura and Osváth, Gergely and Pénzes, Janka and Haussmann, Mark F. and Barta, Zoltán and Pap, Péter László},
	doi = {10.1111/1365-2435.13228},
	journal-iso = {FUNCT ECOL},
	journal = {FUNCTIONAL ECOLOGY},
	volume = {33},
	unique-id = {30339265},
	issn = {0269-8463},
	year = {2019},
	eissn = {1365-2435},
	pages = {152-161},
	orcid-numbers = {Barta, Zoltán/0000-0002-7121-9865}
}

@article{MTMT:3315414,
	title = {Oxidative physiology of reproduction in a passerine bird: a field experiment},
	url = {https://m2.mtmt.hu/api/publication/3315414},
	author = {Pap, Péter László and Vincze, Orsolya and Fülöp, Attila and Székely-Béres, O and Pătraș, L and Pénzes, J and Vágási, István Csongor},
	doi = {10.1007/s00265-017-2434-x},
	journal-iso = {BEHAV ECOL SOCIOBIOL},
	journal = {BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY},
	volume = {72},
	unique-id = {3315414},
	issn = {0340-5443},
	year = {2018},
	eissn = {1432-0762},
	orcid-numbers = {Fülöp, Attila/0000-0001-5337-336X}
}

@article{MTMT:30374386,
	title = {Exploring the mechanistic link between corticosterone and insulin-like growth factor-1 in a wild passerine bird},
	url = {https://m2.mtmt.hu/api/publication/30374386},
	author = {Tóth, Zsófia and Ouyang, Jenny Q. and Lendvai, Ádám Zoltán},
	doi = {10.7717/peerj.5936},
	journal-iso = {PEERJ},
	journal = {PEERJ},
	volume = {6},
	unique-id = {30374386},
	issn = {2167-8359},
	abstract = {Background. Physiological regulators of life history trade-offs need to be responsive to sudden changes of resource availability. When homeostasis is challenged by unpredictable stressors, vertebrates respond through a set of physiological reactions, which can promote organismal survival. Glucocorticoids have been traditionally recognized as one of the main regulators of the physiological stress response, but the role of an evolutionarily more conserved pathway, the hypothalamic-pituitary-somatotropic (HPS) axis producing insulin-like growth factor-1 (IGF-1) has received much less attention. Although IGF-1 is known to affect several life history traits, little is known about its role in the physiological stress response and it has never been studied directly in adult wild animals.},
	keywords = {glucocorticoid; stress response; IGF-1; Panurus biarmicus; HPS axis; Life-history trade offs},
	year = {2018},
	eissn = {2167-8359},
	orcid-numbers = {Lendvai, Ádám Zoltán/0000-0002-8953-920X}
}

@article{MTMT:3334016,
	title = {Experimental increase in baseline corticosterone level reduces oxidative damage and enhances innate immune response},
	url = {https://m2.mtmt.hu/api/publication/3334016},
	author = {Vágási, István Csongor and Pătraș, Laura and Pap, Péter László and Vincze, Orsolya and Mureșan, Cosmin and Németh, József and Lendvai, Ádám Zoltán},
	doi = {10.1371/journal.pone.0192701},
	journal-iso = {PLOS ONE},
	journal = {PLOS ONE},
	volume = {13},
	unique-id = {3334016},
	issn = {1932-6203},
	abstract = {Glucocorticoid (GC) hormones are significant regulators of homeostasis. The physiological effects of GCs critically depend on the time of exposure (short vs. long) as well as on their circulating levels (baseline vs. stress-induced). Previous experiments, in which chronic and high elevation of GC levels was induced, indicate that GCs impair both the activity of the immune system and the oxidative balance. Nonetheless, our knowledge on how mildly elevated GC levels, a situation much more common in nature, might influence homeostasis is limited. Therefore, we studied whether an increase in GC level within the baseline range suppresses or enhances condition (body mass, hematocrit and coccidian infestation) and physiological state (humoral innate immune system activity and oxidative balance). We implanted captive house sparrows Passer domesticus with either 60 days release corticosterone (CORT) or control pellets. CORT-treated birds had elevated baseline CORT levels one week after the implantation, but following this CORT returned to its pre-treatment level and the experimental groups had similar CORT levels one and two months following the implantation. The mass of tail feathers grown during the initial phase of treatment was smaller in treated than in control birds. CORT implantation had a transient negative effect on body mass and hematocrit, but both of these traits resumed the pre-treatment values by one month post-treatment. CORT treatment lowered oxidative damage to lipids (malondialdehyde) and enhanced constitutive innate immunity at one week and one month post-implantation. Our findings suggest that a relatively short-term (i.e. few days) elevation of baseline CORT might have a positive and stimulatory effect on animal physiology.},
	year = {2018},
	eissn = {1932-6203},
	orcid-numbers = {Lendvai, Ádám Zoltán/0000-0002-8953-920X}
}

@article{MTMT:3190057,
	title = {Do Hormones, Telomere Lengths, and Oxidative Stress form an Integrated Phenotype? A Case Study in Free-Living Tree Swallows},
	url = {https://m2.mtmt.hu/api/publication/3190057},
	author = {Ouyang, JQ and Lendvai, Ádám Zoltán and Moore, IT and Bonier, F and Haussmann, MF},
	doi = {10.1093/icb/icw044},
	journal-iso = {INTEGR COMP BIOL},
	journal = {INTEGRATIVE AND COMPARATIVE BIOLOGY},
	volume = {56},
	unique-id = {3190057},
	issn = {1540-7063},
	abstract = {All organisms must anticipate and balance energetic demands and available resources in order to maximize fitness. As hormones coordinate many interactions between an organism's internal condition and the external environment, they may be key in mediating the allocation of resources to meet these demands. However, given that individuals differ considerably in how they react to changes in energetic demand, we asked whether variations in endocrine traits also correspond with life history variation. We tested whether natural variation in glucocorticoid hormone levels, oxidative stress measurements, and condition related to reproductive effort in a free-living songbird, the tree swallow, Tachycineta bicolor. We then tested whether any of these traits predicted the probability of a particular individual's return to the local population in the following two years, an indicator of survival in this philopatric species. We found that males and females with longer telomeres had lighter nestlings. Moreover, individuals with lower plasma antioxidant capacity and higher reactive oxygen metabolites (i.e., greater oxidative stress) were less likely to return to the population. However, none of these traits were related to glucocorticoid levels. Our findings suggest a trade-off between reproduction and survival, with individuals with shorter telomeres having heavier nestlings but potentially paying a cost in terms of higher oxidative stress and lower survival. Interestingly, the evidence of this trade-off was unrelated to natural variation in glucocorticoids.},
	keywords = {SURVIVAL; CORTICOSTERONE; EVOLUTION; ECOLOGY; GLUCOCORTICOIDS; BIRDS; LONG; TRADE-OFFS; BASE-LINE; GALLUS-GALLUS-DOMESTICUS},
	year = {2016},
	eissn = {1557-7023},
	pages = {138-145},
	orcid-numbers = {Lendvai, Ádám Zoltán/0000-0002-8953-920X}
}

@article{MTMT:3092352,
	title = {Large-brained birds suffer less oxidative damage},
	url = {https://m2.mtmt.hu/api/publication/3092352},
	author = {Vágási, István Csongor and Vincze, Orsolya and Pătraș, L and Osváth, Gergely and Marton, Attila and Bărbos, L and Sol, D and Pap, Péter László},
	doi = {10.1111/jeb.12920},
	journal-iso = {J EVOLUTION BIOL},
	journal = {JOURNAL OF EVOLUTIONARY BIOLOGY},
	volume = {29},
	unique-id = {3092352},
	issn = {1010-061X},
	year = {2016},
	eissn = {1420-9101},
	pages = {1968-1976}
}

@article{MTMT:2922300,
	title = {Seasonal patterns and relationships among coccidian infestations, measures of oxidative physiology, and immune function in free-living house sparrows over an annual cycle},
	url = {https://m2.mtmt.hu/api/publication/2922300},
	author = {Pap, Péter László and Pătraș, L and Osváth, Gergely and Buehler, DM and Versteegh, MA and Sesarman, A and Banciu, M and Vágási, István Csongor},
	doi = {10.1086/681243},
	journal-iso = {PHYSIOL BIOCHEM ZOOL},
	journal = {PHYSIOLOGICAL AND BIOCHEMICAL ZOOLOGY},
	volume = {88},
	unique-id = {2922300},
	issn = {1522-2152},
	year = {2015},
	eissn = {1537-5293},
	pages = {395-405}
}

@article{MTMT:2473775,
	title = {Necessity or capacity? Physiological state predicts problem-solving performance in house sparrows},
	url = {https://m2.mtmt.hu/api/publication/2473775},
	author = {Bókony, Veronika and Lendvai, Ádám Zoltán and Vágási, István Csongor and Pătraș, L and Pap, Péter László and Németh, J and Vincze, Ernő and Papp, S and Preiszner, Bálint and Seress, Gábor and Liker, András},
	doi = {10.1093/beheco/art094},
	journal-iso = {BEHAV ECOL},
	journal = {BEHAVIORAL ECOLOGY},
	volume = {25},
	unique-id = {2473775},
	issn = {1045-2249},
	abstract = {Innovative behaviors such as exploiting novel food sources can grant significant fitness benefits for animals, yet little is known about the mechanisms driving such phenomena, and the role of physiology is virtually unexplored in wild species. Two hypotheses predict opposing effects of physiological state on innovation success. On one hand, poor physiological condition may promote innovations by forcing individuals with poor competitive abilities to invent alternative solutions. On the other hand, superior physiological condition may ensure greater cognitive capacity and thereby better problem-solving and learning performance. To test these hypotheses, we studied the behavior of wild-caught house sparrows (Passer domesticus) in 4 novel tasks of food acquisition, one of which was presented
		to the birds in repeated trials, and we investigated the relationships of individual performance with relevant physiological traits. We found that problem-solving performance across the 4 tasks was moderately consistent within individuals. Birds with lower integrated levels of corticosterone, the main avian stress hormone, solved the most difficult task faster and were more efficient learners in
		the repeated task than birds with higher corticosterone levels. Birds with higher concentration of total glutathione, a key antioxidant, solved 2 relatively easy tasks faster, whereas birds with fewer coccidian parasites tended to solve the difficult task more quickly. Our results, thus, indicate that aspects of physiological state influence problem-solving performance in a context-dependent manner, and these effects on problem-solving capacity, probably including cognitive abilities, are more likely to drive individual innovation success than necessity due to poor condition.},
	year = {2014},
	eissn = {1465-7279},
	pages = {124-135},
	orcid-numbers = {Bókony, Veronika/0000-0002-2136-5346; Lendvai, Ádám Zoltán/0000-0002-8953-920X; Seress, Gábor/0000-0001-9828-4934; Liker, András/0000-0001-8545-4869}
}

@article{MTMT:2801259,
	title = {No evidence for parasitism-linked changes in immune function or oxidative physiology over the annual cycle of an avian species.},
	url = {https://m2.mtmt.hu/api/publication/2801259},
	author = {Pap, Péter László and Sesarman, A and Vágási, István Csongor and Buehler, DM and Patras, L and Versteegh, MA and Banciu, M},
	doi = {10.1086/676934},
	journal-iso = {PHYSIOL BIOCHEM ZOOL},
	journal = {PHYSIOLOGICAL AND BIOCHEMICAL ZOOLOGY},
	volume = {87},
	unique-id = {2801259},
	issn = {1522-2152},
	abstract = {Temporally changing environmental conditions occur in most parts of the world and can exert strong pressure on the immune defense of organisms. Seasonality may result in changes in physiological traits over the year, and such changes may be essential for the optimization of defense against infections. Evidence from field and laboratory studies suggest the existence of links between environmental conditions, such as infection risk, and the ability of animals to mount an immune response or to overcome infections; however, the importance of parasites in mediating seasonal change in immune defense is still debated. In this study, we test the hypothesis that seasonal change in immune function and connected physiological traits is related to parasite infection. We sampled captive house sparrows (Passer domesticus) once every 2 mo over 14 mo and compared the annual variation in 12 measures of condition, immune function, antioxidant status, and oxidative damage among birds naturally infested with coccidians or medicated against these parasites. We found significant variation in 10 of 12 traits over the year. However, we found little support for parasite-mediated change in immune function and oxidative status in captive house sparrows. Of the 12 measures, only one was slightly affected by parasite treatment. In support of the absence of any effect of coccidians on the annual profile of the condition and physiological traits, we found no consistent relationships between the intensity of infestation and these response variables over the year. Our results show that chronic coccidian infections have limited effect on the seasonal changing of physiological traits and that the patterns of these measures are probably more affected by acute infection and/or virulent parasite strains.},
	year = {2014},
	eissn = {1537-5293},
	pages = {729-739}
}

@article{MTMT:1473058,
	title = {Coping with novelty and stress in free-living house sparrows},
	url = {https://m2.mtmt.hu/api/publication/1473058},
	author = {Lendvai, Ádám Zoltán and Bókony, Veronika and Chastel, O},
	doi = {10.1242/jeb.047712},
	journal-iso = {J EXP BIOL},
	journal = {JOURNAL OF EXPERIMENTAL BIOLOGY},
	volume = {214},
	unique-id = {1473058},
	issn = {0022-0949},
	year = {2011},
	eissn = {1477-9145},
	pages = {821-828},
	orcid-numbers = {Lendvai, Ádám Zoltán/0000-0002-8953-920X; Bókony, Veronika/0000-0002-2136-5346}
}

@article{MTMT:1473059,
	title = {Natural variation in stress response is related to post-stress parental effort in male house sparrows},
	url = {https://m2.mtmt.hu/api/publication/1473059},
	author = {Lendvai, Ádám Zoltán and Chastel, O},
	doi = {10.1016/j.yhbeh.2010.09.004},
	journal-iso = {HORM BEHAV},
	journal = {HORMONES AND BEHAVIOR},
	volume = {58},
	unique-id = {1473059},
	issn = {0018-506X},
	year = {2010},
	eissn = {1095-6867},
	pages = {936-942},
	orcid-numbers = {Lendvai, Ádám Zoltán/0000-0002-8953-920X}
}

@article{MTMT:3306802,
	title = {New perspectives for estimating body condition from mass/length data: the scaled mass index as an alternative method},
	url = {https://m2.mtmt.hu/api/publication/3306802},
	author = {Peig, Jordi and Green, Andy J.},
	doi = {10.1111/j.1600-0706.2009.17643.x},
	journal-iso = {OIKOS},
	journal = {OIKOS},
	volume = {118},
	unique-id = {3306802},
	issn = {0030-1299},
	year = {2009},
	eissn = {1600-0706},
	pages = {1883-1891}
}

@article{MTMT:1144055,
	title = {Experimental mate-removal increases the stress response of female house sparrows: The effects of offspring value?},
	url = {https://m2.mtmt.hu/api/publication/1144055},
	author = {Lendvai, Ádám Zoltán and Chastel, O},
	doi = {10.1016/j.yhbeh.2007.11.011},
	journal-iso = {HORM BEHAV},
	journal = {HORMONES AND BEHAVIOR},
	volume = {53},
	unique-id = {1144055},
	issn = {0018-506X},
	year = {2008},
	eissn = {1095-6867},
	pages = {395-401},
	orcid-numbers = {Lendvai, Ádám Zoltán/0000-0002-8953-920X}
}

@article{MTMT:1144054,
	title = {Reproduction and modulation of the stress response: an experimental test in the house sparrow},
	url = {https://m2.mtmt.hu/api/publication/1144054},
	author = {Lendvai, Ádám Zoltán and Giraudeau, M and Chastel, O},
	doi = {10.1098/rspb.2006.3735},
	journal-iso = {P ROY SOC B-BIOL SCI},
	journal = {PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES},
	volume = {274},
	unique-id = {1144054},
	issn = {0962-8452},
	year = {2007},
	eissn = {1471-2954},
	pages = {391-397},
	orcid-numbers = {Lendvai, Ádám Zoltán/0000-0002-8953-920X}
}

@article{MTMT:1144053,
	title = {An investigation of mate choice based on manipulation of multiple ornaments in Kentish plovers},
	url = {https://m2.mtmt.hu/api/publication/1144053},
	author = {Lendvai, Ádám Zoltán and Kis, János and Székely, Tamás and Cuthill, IC},
	doi = {10.1016/j.anbehav.2003.08.010},
	journal-iso = {ANIM BEHAV},
	journal = {ANIMAL BEHAVIOUR},
	volume = {67},
	unique-id = {1144053},
	issn = {0003-3472},
	year = {2004},
	eissn = {1095-8282},
	pages = {703-709},
	orcid-numbers = {Lendvai, Ádám Zoltán/0000-0002-8953-920X; Kis, János/0000-0001-9354-1292}
}