TY - CONF AU - Boross, N AU - Markó, Gábor AU - Laczi, Miklós AU - Garamszegi, L Z AU - Hegyi, Gergely AU - Herényi, Márton AU - Kiss, D AU - Nagy, Gergely AU - Rosivall, Balázs AU - Szöllősi, Eszter AU - Török, János ED - Kőrösi, Ádám TI - A hematokrit repetabilitása és szezonális változása az örvös légykapónál (Ficedula albicollis) T2 - Szüszi 2013, 5. Szünzoológiai Szimpózium PY - 2013 SP - 10 EP - 10 PG - 1 UR - https://m2.mtmt.hu/api/publication/2502670 ID - 2502670 AB - A vér hematokritértéke az egyed fiziológiai állapotáról nyújt információt. Feltehetőleg a magas hematokritszint jó egészségi állapotot tükröz, mivel a vörösvérsejtek megemelkedett szintje nagyobb oxigén felvételi kapacitást és hatékonyabb oxigénszállítást tesz lehetővé a szövetekhez, mely az egyed jobb teljesítőképességét eredményezi. Azonban a hematokritérték növekedésének felső határt szab a vér viszkozitásának fenntartása. A Pilis hegységben mesterséges odútelepeken költő örvös légykapókon (Ficedula albicollis) vizsgáltuk három évben (2008-2010) a hematokritérték évek és ivarok közötti eltérését, továbbá hímek esetén udvarlás és fiókanevelés stádiumban mért mintázatát. Vizsgáltuk az egyedek hematokritértékének és kondíciójának kapcsolatát. Továbbá számoltuk az egyedek hematokritértékének évek közötti repetabilitását. A hímek udvarlás alatti hematokritértékei jelentős eltérést mutattak az évek között. A fiókákat nevelő tojóknál szintén erős volt az év hatása, a hímek fiókanevelés alatti hematokritértékei ellenben nem különböztek évek között. 2009-ben a tojókat magasabb hematokrit jellemezte, mint a hímeket. 2010-ben nem tapasztaltunk eltérést a két ivar között. A két szaporodási stádium összehasonlítása során a hímek udvarlás alatti hematokritszintje magasabbnak bizonyult, mint fiókanevelés alatt. Bár az egyedek kondíciója nem mutatott kapcsolatot hematokritértékükkel, a hematokrit évek közötti eltérése mégis pozitív összefüggésben állt kondíciójuk változásával. Emellett az egyedek hematokritértékeit évek között magas repetabilitás jellemezte. Az évek közötti varianciát az eltérő környezeti feltételek okozhatták. A hematokrit udvarlás alatt mért magas szintje az azt megelőző vonulás nagy energiaigényének következménye lehet, mely megerősíti az elméletet, hogy a hematokrit értéke az energiaigénynek megfelelően változik, tükrözve a metabolikus aktivitást. Az egyedek kondíciójával való összehasonlítás azt mutatja, hogy bár közvetlen kapcsolatot nem kaptunk a hematokritértékkel, a hematokrit évek közötti változására hasonló faktorok lehettek hatással, melyek az állatok kondíciójára is befolyással bírtak. Bár a hematokritérték változása volt megfigyelhető az évek és a szaporodási stádiumok között, az egyeden belül évek között mégis repetabilitást mutatott. Eredményünk alapján a hematokrit értéke nem csak az egyed aktuális állapotát tükrözheti, hanem annak általános egészségi állapotáról is informálhat. LA - Hungarian DB - MTMT ER - TY - CONF AU - Boross, Nóra AU - Markó, Gábor AU - Laczi, Miklós AU - Garamszegi, László Zsolt AU - Hegyi, Gergely AU - Herényi, Márton AU - Kiss, Dorottya AU - Nagy, Gergely AU - Rosivall, Balázs AU - Szöllősi, Eszter AU - Török, János TI - A hematokrit szezonális mintázata és kapcsolata az egyedi minőséggel örvös légykapónál (Ficedula albicollis) T2 - 14. Kolozsvári Biológus Napok : Kolozsvár, 2013. április 12-14. : kivonatfüzet = [14th Biology Days : Cluj-Napoca, 12-14 April 2013 : abstracts] PB - Kolozsvári Akadémiai Bizottság C1 - Kolozsvár PY - 2013 SP - 15 EP - 15 PG - 1 UR - https://m2.mtmt.hu/api/publication/2502464 ID - 2502464 AB - The haematocrit rate of the blood shows the physiological state of an individual. As the haematocrit grows, the higher erythrocyte number results in more efficient oxygen uptake capacity which can lead better performance and probably better survival of an individual. We studied a wild collared flycatcher population during a period of three years (2008-2010). We measured the difference in haematocrit between years, sexes and breeding stadiums (after arriving from migration and when fledlings were about 6 days old in the nests). The haematocrit values differed between most years, between sexes in 2009 and during the breeding period. We tried to elucidate the relationship between the haematocrit value and the measured fitness related traits of individuals. Haematocrit of birds were unrelated to age, wing patch size, forehead patch size, body condition and clutch size. Analysing the changes between two years, there was a positive relationship between changes in condition index and haematocrit of individuals. Between years, the haematocrit values of an individual showed repeatability. The different environmental effects and energy demands of individuals may be the driving force behind the observed changes in haematocrit level. As the haematocrit value shows no correlation with the studied fitness related traits, it might indicate a different aspect of individual’s quality. The repeatable haematocrit level of individuals suggests that haematocrit may inform us about the individual’s general health state instead only its current status. LA - English DB - MTMT ER - TY - CONF AU - Boross, Nóra AU - Markó, Gábor AU - Hargitai, Rita AU - Nagy, Gergely AU - Török, János TI - Környezeti stressz hatása a széncinegék (Parus major) fiziológiai mutatóira T2 - A Magyar Etológiai Társaság XVI. Kongresszusa PB - Magyar Etológiai Társaság C1 - Tihany PY - 2014 SP - 13 EP - 13 PG - 1 UR - https://m2.mtmt.hu/api/publication/2805044 ID - 2805044 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Boross, Nóra AU - Markó, Gábor AU - Laczi, Miklós AU - Garamszegi, László Zsolt AU - Hegyi, Gergely AU - Herényi, Márton AU - Kiss, Dorottya AU - Nagy, Gergely AU - Rosivall, Balázs AU - Szöllősi, Eszter AU - Török, János TI - Sources of variation in haematocrit in the Collared Flycatcher (Ficedula albicollis) JF - ORNIS HUNGARICA J2 - ORNIS HUNG VL - 20 PY - 2012 IS - 2 SP - 64 EP - 72 PG - 9 SN - 1215-1610 DO - 10.2478/orhu-2013-0008 UR - https://m2.mtmt.hu/api/publication/2502458 ID - 2502458 N1 - Behavioural Ecology Group, Department of Systematic Zoology and Ecology, Eötvös Loránd University, Pázmány Péter sétány 1/c, Budapest, 1117, Hungary Department of Plant Pathology, Corvinus University of Budapest, Ménesi út 44., Budapest, 1118, Hungary Department of Evolutionary Ecology, Estación Biológica de Doñana (CSIC), c/Americo Vespucio, s/n, Seville, 41092, Spain Cited By :3 Export Date: 22 November 2022 AB - The haematocrit rate of the blood shows the individual physiological state. As the haematocrit grows, the higher erythrocyte number results in more efficient oxygen uptake capacity which can lead to better performance and probably a better survival rate of an individual. Hence we assume that the high value of haematocrit reflects good health state. Altogether 308 blood samples were collected from a wild population of Collared Flycatchers (Ficedula albicollis) in two breeding stages during a period of 2008–2010. We tried to elucidate the relationship between condition and haematocrit level of an individual and studied the haematocrit changes of an individual between years. The haematocrit values differed between years. Females had higher haematocrit values than males in 2010 but not in 2009. At courtship the haematocrit level of males was higher, than during nestling care. The different environmental effects and energy demands of the individuals may be the driving force behind the observed changes in haematocrit level. Analysing the changes between two years, there was a positive correlation between changes in condition index and haematocrit of individuals. The haematocrit values of an individual were repeatable between years. This finding suggests that haematocrit can be informative about the individual’s general health state. LA - English DB - MTMT ER - TY - JOUR AU - Canal, David AU - Jablonszky, Mónika AU - Krenhardt, Katalin AU - Markó, Gábor AU - Nagy, Gergely AU - Szász, Eszter AU - Török, János AU - Zsebők, Sándor AU - Garamszegi, László Zsolt TI - Male and female identity and environmental contexts influence courtship behaviour in a songbird JF - ANIMAL BEHAVIOUR J2 - ANIM BEHAV VL - 186 PY - 2022 SP - 11 EP - 19 PG - 9 SN - 0003-3472 DO - 10.1016/j.anbehav.2022.01.006 UR - https://m2.mtmt.hu/api/publication/32598355 ID - 32598355 N1 - Institute of Ecology and Botany, Centre for Ecological Research, Vácrátót, Hungary Behavioural Ecology Group, Department of Systematic Zoology and Ecology, ELTE Eötvös Loránd University, Budapest, Hungary Department of Plant Pathology, Institute of Plant Protection, Hungarian University of Agriculture and Life Sciences, Budapest, Hungary ELKH-ELTE, Theoretical Biology and Evolutionary Ecology Research Group, Department of Plant Systematics, Ecology and Theoretical Biology, Eötvös Loránd University, Budapest, Hungary Export Date: 21 April 2022 CODEN: ANBEA Correspondence Address: Canal, D.; Institute of Ecology and Botany, Hungary; email: dav.canal.p@gmail.com LA - English DB - MTMT ER - TY - JOUR AU - Markó, Gábor AU - Manuel, Azcárate AU - Hegyi, Gergely AU - Herczeg, Gábor AU - Laczi, Miklós AU - Nagy, Gergely AU - Juan, Carlos Señar AU - Török, János AU - Garamszegi, László Zsolt TI - Behavioural responses to handling stress in the Great Tit: within-individual consistency and the effect of age, sex and body condition JF - ORNIS HUNGARICA J2 - ORNIS HUNG VL - 21 PY - 2013 IS - 1 SP - 12 EP - 25 PG - 14 SN - 1215-1610 DO - 10.2478/orhu-2013-0012 UR - https://m2.mtmt.hu/api/publication/2495127 ID - 2495127 N1 - Ecology Research Group, Hungarian Academy of Sciences, Hungarian Natural History Museum, Eötvös Loránd University, Pázmány Péter sétány 1/c, Budapest, 1117, Hungary Department of Plant Pathology, Corvinus University of Budapest, Ménesi út 44, Budapest, 1118, Hungary Behavioral Ecology Group, Department of Systematic Zoology and Ecology, Eötvös Loránd University, Pázmány Péter sétány 1/c, Budapest, 1117, Hungary Department of Evolutionary Ecology, Estación Biológica de Doñana-CSIC, c/Americo Vespucio, s/n, Seville, 41092, Spain University of Cordoba, Medina Azahara Avenue, Cordoba, 5 14071, Spain Behavioural & Evolutionary Ecology Associate Research Unit, CSIC, Museu de Ciències Naturals de Barcelona, Passeig Picasso s/n, Barcelona, 08003, Spain Cited By :9 Export Date: 11 April 2024 Correspondence Address: Markó, G.; Ecology Research Group, Pázmány Péter sétány 1/c, Hungary; email: magvacska@gmail.com LA - English DB - MTMT ER - TY - JOUR AU - Garamszegi, László Zsolt AU - Kubinyi, Enikő AU - Czeibert, Kálmán AU - Nagy, Gergely AU - Csörgő, Tibor AU - Kolm, Niclas TI - Evolution of relative brain size in dogs - no effects of selection for breed function, litter size or longevity JF - EVOLUTION J2 - EVOLUTION VL - 77 PY - 2023 IS - 7 SP - 1591 EP - 1606 PG - 16 SN - 0014-3820 DO - 10.1093/evolut/qpad063 UR - https://m2.mtmt.hu/api/publication/33765817 ID - 33765817 AB - Domestication is a well-known example of the relaxation of environmentally-based cognitive selection that leads to reductions in brain size. However, little is known about how brain size evolves after domestication and whether subsequent directional/artificial selection can compensate for domestication effects. The first animal to be domesticated was the dog, and recent directional breeding generated the extensive phenotypic variation among breeds we observe today. Here we use a novel endocranial dataset based on high-resolution CT scans to estimate brain size in 159 dog breeds and analyze how relative brain size varies across breeds in relation to functional selection, longevity, and litter size. In our analyses, we controlled for potential confounding factors such as common descent, gene flow, body size, and skull shape. We found that dogs have consistently smaller relative brain size than wolves supporting the domestication effect, but breeds that are more distantly related to wolves have relatively larger brains than breeds that are more closely related to wolves. Neither functional category, skull shape, longevity, nor litter size was associated with relative brain size, which implies that selection for performing specific tasks, morphology, and life history do not necessarily influence brain size evolution in domesticated species. LA - English DB - MTMT ER - TY - JOUR AU - Garamszegi, László Zsolt AU - Zagalska-Neubauer, M AU - Canal, David AU - Blázi, György AU - Laczi, Miklós AU - Nagy, Gergely AU - Szöllősi, Eszter AU - Vaskuti, Éva AU - Török, János AU - Zsebők, Sándor TI - MHC-mediated sexual selection on birdsong: Generic polymorphism, particular alleles and acoustic signals JF - MOLECULAR ECOLOGY J2 - MOL ECOL VL - 27 PY - 2018 IS - 11 SP - 2620 EP - 2633 PG - 14 SN - 0962-1083 DO - 10.1111/mec.14703 UR - https://m2.mtmt.hu/api/publication/3397465 ID - 3397465 N1 - Funding Agency and Grant Number: Polish Ministry of Science and Higher EducationMinistry of Science and Higher Education, Poland [N N304 401338]; National Research, Development and Innovation Office [K105517, K115970, PD 115730, PD124043]; Ministry of Economy and Competitiveness [CGL2015-70639-P]; Hungarian Scientific Research FundOrszagos Tudomanyos Kutatasi Alapprogramok (OTKA) [K101611, K75618] Funding text: Polish Ministry of Science and Higher Education, Grant/Award Number: N N304 401338; National Research, Development and Innovation Office, Grant/Award Number: K105517, K115970, PD 115730, PD124043; Ministry of Economy and Competitiveness, Grant/Award Number: CGL2015-70639-P; Hungarian Scientific Research Fund, Grant/Award Number: K101611, K75618 Department of Evolutionary Ecology, Estación Biológica de Doñana-CSIC, Seville, Spain Department of Plant Systematics, Ecology and Theoretical Biology, MTA-ELTE, Theoretical Biology and Evolutionary Ecology Research Group, Eötvös Loránd University, Budapest, Hungary Ornithological Station, Museum and Institute of Zoology, Polish Academy of Sciences, Warsaw, Poland Centro para el Estudio y Conservación de las Aves Rapaces en Argentina (CECARAUNLPam), Instituto de las Ciencias de la Tierra y Ambientales de La Pampa (INCITAP), Santa Rosa, Argentina Department of Systematic Zoology and Ecology, Behavioural Ecology Group, Eötvös Loránd University, Budapest, Hungary Ecology Research Group, Hungarian Academy of Sciences, Budapest, Hungary Cited By :2 Export Date: 5 December 2019 CODEN: MOECE Correspondence Address: Garamszegi, L.Z.; Department of Evolutionary Ecology, Estación Biológica de Doñana-CSIC, c/Americo Vespucio, 26, Spain; email: laszlo.garamszegi@ebd.csic.es Department of Evolutionary Ecology, Estación Biológica de Doñana-CSIC, Seville, Spain Department of Plant Systematics, Ecology and Theoretical Biology, MTA-ELTE, Theoretical Biology and Evolutionary Ecology Research Group, Eötvös Loránd University, Budapest, Hungary Ornithological Station, Museum and Institute of Zoology, Polish Academy of Sciences, Warsaw, Poland Centro para el Estudio y Conservación de las Aves Rapaces en Argentina (CECARAUNLPam), Instituto de las Ciencias de la Tierra y Ambientales de La Pampa (INCITAP), Santa Rosa, Argentina Department of Systematic Zoology and Ecology, Behavioural Ecology Group, Eötvös Loránd University, Budapest, Hungary Ecology Research Group, Hungarian Academy of Sciences, Budapest, Hungary Cited By :2 Export Date: 9 December 2019 CODEN: MOECE Correspondence Address: Garamszegi, L.Z.; Department of Evolutionary Ecology, Estación Biológica de Doñana-CSIC, c/Americo Vespucio, 26, Spain; email: laszlo.garamszegi@ebd.csic.es Department of Evolutionary Ecology, Estación Biológica de Doñana-CSIC, Seville, Spain Department of Plant Systematics, Ecology and Theoretical Biology, MTA-ELTE, Theoretical Biology and Evolutionary Ecology Research Group, Eötvös Loránd University, Budapest, Hungary Ornithological Station, Museum and Institute of Zoology, Polish Academy of Sciences, Warsaw, Poland Centro para el Estudio y Conservación de las Aves Rapaces en Argentina (CECARAUNLPam), Instituto de las Ciencias de la Tierra y Ambientales de La Pampa (INCITAP), Santa Rosa, Argentina Department of Systematic Zoology and Ecology, Behavioural Ecology Group, Eötvös Loránd University, Budapest, Hungary Ecology Research Group, Hungarian Academy of Sciences, Budapest, Hungary Cited By :4 Export Date: 8 October 2020 CODEN: MOECE Correspondence Address: Garamszegi, L.Z.; Department of Evolutionary Ecology, Estación Biológica de Doñana-CSIC, c/Americo Vespucio, 26, Spain; email: laszlo.garamszegi@ebd.csic.es Funding Agency and Grant Number: Polish Ministry of Science and Higher EducationMinistry of Science and Higher Education, Poland [N N304 401338]; National Research, Development and Innovation OfficeNational Research, Development & Innovation Office (NRDIO) - Hungary [K105517, K115970, PD 115730, PD124043]; Ministry of Economy and Competitiveness [CGL2015-70639-P]; Hungarian Scientific Research FundOrszagos Tudomanyos Kutatasi Alapprogramok (OTKA) [K101611, K75618] Funding text: Polish Ministry of Science and Higher Education, Grant/Award Number: N N304 401338; National Research, Development and Innovation Office, Grant/Award Number: K105517, K115970, PD 115730, PD124043; Ministry of Economy and Competitiveness, Grant/Award Number: CGL2015-70639-P; Hungarian Scientific Research Fund, Grant/Award Number: K101611, K75618 AB - Several hypotheses predict that the major histocompatibility complex (MHC) drives mating preference in females. Olfactory, colour or morphological traits are often found as reliable signals of the MHC profile, but the role of avian song mediating MHC-based female choice remains largely unexplored. We investigated the relationship between several MHC and acoustic features in the collared flycatcher (Ficedula albicollis), a European passerine with complex songs. We screened a fragment of the class IIB second exon of the MHC molecule, of which individuals harbour 4-15 alleles, while considerable sequence diversity is maintained at the population level. To make statistical inferences from a large number of comparisons, we adopted both null-hypothesis testing and effect size framework in combination with randomization procedures. After controlling for potential confounding factors, neither MHC allelic diversity nor the presence of particular alleles was associated remarkably with the investigated qualitative and quantitative song traits. Furthermore, genetic similarity among males based on MHC sequences was not reflected by the similarity in their song based on syllable content. Overall, these results suggest that the relationship between features of song and the allelic composition and diversity of MHC is not strong in the studied species. However, a biologically motivated analysis revealed that individuals that harbour an MHC allele that impairs survival perform songs with broader frequency range. This finding suggests that certain aspects of the song may bear reliable information concerning the MHC profile of the individuals, which can be used by females to optimize mate choice. LA - English DB - MTMT ER - TY - JOUR AU - Hargitai, Rita AU - Nagy, Gergely AU - Herényi, Márton AU - Nyiri, Zoltán AU - Laczi, Miklós AU - Hegyi, Gergely AU - Eke, Zsuzsanna AU - Török, János TI - Darker eggshell spotting indicates lower yolk antioxidant level and poorer female quality in the Eurasian Great Tit (Parus major) JF - AUK J2 - AUK VL - 133 PY - 2016 IS - 2 SP - 131 EP - 146 PG - 16 SN - 0004-8038 DO - 10.1642/AUK-15-128.1 UR - https://m2.mtmt.hu/api/publication/3045260 ID - 3045260 N1 - Behavioural Ecology Group, Department of Systematic Zoology and Ecology, Eötvös Loránd University, Budapest, Hungary Joint Research and Training Laboratory on Separation Techniques, Eötvös Loránd University, Budapest, Hungary Cited By :18 Export Date: 22 April 2022 CODEN: AUKJA Correspondence Address: Hargitai, R.; Behavioural Ecology Group, Hungary; email: rita.hargitai@gmail.com AB - Protoporphyrin pigment causes the red-brown eggshell colors; however, for many species, the function of this pigment is unknown. It has been proposed that eggshell pigmentation may strengthen the shell or that it may be a sexually selected signal, which advertises the quality of the female and that of her offspring to the male parent. In this study, we aimed to discover whether protoporphyrin-based eggshell pigmentation patterns of Eurasian Great Tits (Parus major) were related to female or egg quality. Additionally, we tested whether different methods of eggshell pigmentation estimation could be reliable predictors of eggshell protoporphyrin levels. We found that spot intensity, spot size, spotting coverage, and brown spot chroma indicated the protoporphyrin pigment concentration of the eggshell. Our results revealed that Eurasian Great Tit females that laid eggs with darker pigmentation had more lymphocytes in their circulation and had paler yellow breast and lower UV plumage reflectance, possibly indicating poorer health and individual quality. However, we did not find evidence that eggshell pigmentation patterns indicated the body condition, body size, or plasma oxidative status of females. Furthermore, we found that eggs with darker spots contained lower concentrations of antioxidants in the yolk. High protoporphyrin levels may be detrimental to females as they may cause oxidative damage, and this may be why birds that laid eggs with darker spots deposited lower amounts of antioxidants into the egg yolk. Shell spot darkness may also indicate territory quality, as females that laid smaller clutches also laid eggs with higher eggshell pigmentation levels. Thus, our results suggest that shell spot darkness may indicate the state of health of the female, egg yolk antioxidant level, and possibly also the quality of the territory. © 2016 American Ornithologists' Union. LA - English DB - MTMT ER - TY - JOUR AU - Hargitai, Rita AU - Nagy, Gergely AU - Nyiri, Zoltán AU - Bervoets, L AU - Eke, Zsuzsanna AU - Eens, M AU - Török, János TI - Effects of breeding habitat (woodland versus urban) and metal pollution on the egg characteristics of great tits (Parus major) JF - SCIENCE OF THE TOTAL ENVIRONMENT J2 - SCI TOTAL ENVIRON VL - 544 PY - 2016 SP - 31 EP - 38 PG - 8 SN - 0048-9697 DO - 10.1016/j.scitotenv.2015.11.116 UR - https://m2.mtmt.hu/api/publication/2988211 ID - 2988211 N1 - Behavioural Ecology Group, Department of Systematic Zoology and Ecology, Eötvös Loránd University, Pázmány P. st. 1/C, Budapest, H-1117, Hungary Joint Research and Training Laboratory on Separation Techniques, Eötvös Loránd University, Pázmány P. st. 1/A, Budapest, H-1117, Hungary Systemic Physiological and Ecotoxicological Research Laboratory, University of Antwerp, Groenenborgerlaan 171/U7, Antwerp, B-2020, Belgium Ethology Research Group, Department of Biology, University of Antwerp, Universiteitsplein 1, Wilrijk, B-2610, Belgium Cited By :29 Export Date: 16 October 2023 CODEN: STEVA Correspondence Address: Hargitai, R.; Behavioural Ecology Group, Pázmány P. st. 1/C, Hungary; email: rita.hargitai@gmail.com LA - English DB - MTMT ER - TY - JOUR AU - Hargitai, Rita AU - Nagy, Gergely AU - Herényi, Márton AU - Török, János TI - Effects of experimental calcium availability, egg parameters and laying order on Great Tit Parus major eggshell pigmentation patterns JF - IBIS J2 - IBIS VL - 155 PY - 2013 IS - 3 SP - 561 EP - 570 PG - 10 SN - 0019-1019 DO - 10.1111/ibi.12054 UR - https://m2.mtmt.hu/api/publication/2361659 ID - 2361659 N1 - Institute of Environmental Sciences, College of Nyíregyháza, Nyíregyháza, Hungary Behavioural Ecology Group, Department of Systematic Zoology and Ecology, Eötvös Loránd University, Budapest, Hungary Cited By :17 Export Date: 17 November 2022 CODEN: IBISA Correspondence Address: Hargitai, R.; Institute of Environmental Sciences, , Nyíregyháza, Hungary; email: rita.hargitai@gmail.com AB - Many bird species lay eggs speckled with protoporphyrin-based spots, however, for most of them the function of eggshell spotting is unknown. A plausible hypothesis is that protoporphyrin might have a structural function in strengthening the eggshell and is therefore deposited when calcium is scarce. In this study, we experimentally provided Great Tit Parus major females with supplemental calcium to examine its effect on the protoporphyrin-based maculation of their eggs. In addition, we studied variation in eggshell pigmentation patterns in relation to other egg parameters and laying order. Calcium-supplemented females laid larger eggs but shell thickness was not significantly affected by the treatment. Calcium supplementation may reduce the time and energy females devote to searching for calcium-rich material, so that they can collect more nutrients and so lay larger eggs. Furthermore, pigment darkness was associated with egg volume and shape, which suggests that female quality and environmental food availability may also influence the shell pigmentation pattern. Within clutches, later-laid eggs had larger and darker spots that were distributed more unevenly on the shell surface. This within-clutch pattern could be explained by the increase in egg volume and egg shape and a decline in shell thickness with egg-laying order, which characteristics were all related to shell-spotting pattern. Eggs with a coronal ring had thinner shells, but pigment intensity and spot size were not related to shell thickness. Thus, our results suggest that concentrated spotting distribution may have a mechanical function, supporting the structural-function hypothesis. LA - English DB - MTMT ER - TY - JOUR AU - Hargitai, Rita AU - Herényi, Márton AU - Nagy, Gergely AU - Török, János TI - Eggshell spotting pattern is related to hatching asynchrony, hematocrit value and growth of nestling great tits Parus major JF - JOURNAL OF AVIAN BIOLOGY J2 - J AVIAN BIOL VL - 49 PY - 2018 IS - 11 PG - 13 SN - 0908-8857 DO - 10.1111/jav.01827 UR - https://m2.mtmt.hu/api/publication/30344941 ID - 30344941 N1 - doi: 10.1111/jav.01827 Export Date: 14 December 2018 CODEN: JAVBE Correspondence Address: Hargitai, R.; Behavioural Ecology Group, Dept of Systematic Zoology and Ecology, Eötvös Loránd UnivHungary; email: rita.hargitai@gmail.com Cited By :1 Export Date: 3 September 2019 CODEN: JAVBE Correspondence Address: Hargitai, R.; Behavioural Ecology Group, Dept of Systematic Zoology and Ecology, Eötvös Loránd UnivHungary; email: rita.hargitai@gmail.com Cited By :1 Export Date: 24 October 2019 CODEN: JAVBE Correspondence Address: Hargitai, R.; Behavioural Ecology Group, Dept of Systematic Zoology and Ecology, Eötvös Loránd UnivHungary; email: rita.hargitai@gmail.com WoS:hiba:000451572800003 2020-08-30 16:28 cikkazonosító nem egyezik AB - Eggshell pigmentation may signal the quality of the egg, that of the female and the environment, and thus nestling development may be related to this egg trait. However, so far, few studies have investigated the relationship between eggshell pigmentation and nestling development. Our aim was to study in a partial cross-fostering experiment whether the protoporphyrin-based eggshell pigmentation (spot intensity and spot distribution) showed any significant associations with several traits related to the development of nestling great tits Parus major. We found that nestlings from clutches with darker spotted eggshells hatched more synchronously, had higher hematocrit value and shorter wings. Females under adverse environmental circumstances were previously shown to lay darker-spotted eggs, and these females probably delayed the start of incubation due to energetic constraints, resulting in a more synchronous hatching. The shorter wings of fledglings originating from clutches with darker-spotted eggs may be caused by the lower general quality of their mothers, mediated through either genetic factors or early maternal effects. Darker spotted eggs may contain different levels of some biomolecules than paler spotted eggs, which could have an effect on nestling metabolism and activity, resulting in an elevated hematocrit value. More aggregated eggshell spotting was related to faster bone growth and slightly longer fledging tarsus length. Eggs with aggregated spotting may have thinner eggshells that could lead to hatchlings with smaller bones due to the lower availability of calcium during development. Nestlings may increase bone growth rate to compensate for their smaller initial size. Overall, our results indirectly suggest lower fitness for nestlings hatched from darker spotted eggs and for nestlings hatched from eggs with more aggregated spotting distribution due to the possible long-term costs of synchronous hatching, shorter wings, and accelerated tarsus growth rate. LA - English DB - MTMT ER - TY - JOUR AU - Hargitai, Rita AU - Herényi, Márton AU - Nagy, Gergely AU - Nyiri, Zoltán AU - Eke, Zsuzsanna AU - Török, János TI - Effects of environmental conditions on the egg mass, yolk antioxidant level, eggshell thickness and eggshell spotting patterns of Great Tits (Parus major) JF - JOURNAL OF ORNITHOLOGY J2 - J ORNITHOL VL - 157 PY - 2016 IS - 4 SP - 995 EP - 1006 PG - 12 SN - 2193-7192 DO - 10.1007/s10336-016-1348-0 UR - https://m2.mtmt.hu/api/publication/3105309 ID - 3105309 N1 - Behavioural Ecology Group, Department of Systematic Zoology and Ecology, Eötvös Loránd University, Pázmány P. st. 1/C, Budapest, 1117, Hungary Department of Zoology and Animal Ecology, Szent István University, Páter K.u.1, Gödöllő, 2100, Hungary Joint Research and Training Laboratory on Separation Techniques, Eötvös Loránd University, Pázmány P. st. 1/A, Budapest, 1117, Hungary Cited By :9 Export Date: 3 September 2019 Correspondence Address: Hargitai, R.; Behavioural Ecology Group, Department of Systematic Zoology and Ecology, Eötvös Loránd University, Pázmány P. st. 1/C, Hungary; email: rita.hargitai@gmail.com LA - English DB - MTMT ER - TY - JOUR AU - Hargitai, Rita AU - Hegyi, Gergely AU - Herényi, Márton AU - Laczi, Miklós AU - Nagy, Gergely AU - Rosivall, Balázs AU - Szöllősi, Eszter AU - Török, János TI - Winter body condition in the Collared Flycatcher: Determinants and carryover effects on future breeding parameters JF - AUK J2 - AUK VL - 131 PY - 2014 IS - 3 SP - 257 EP - 264 PG - 8 SN - 0004-8038 DO - 10.1642/AUK-13-158.1 UR - https://m2.mtmt.hu/api/publication/2728025 ID - 2728025 N1 - Cited By :2 Export Date: 24 January 2023 CODEN: AUKJA Correspondence Address: Hargitai, R.; Behavioral Ecology Group, Hungary LA - English DB - MTMT ER - TY - JOUR AU - Hegyi, Gergely AU - Laczi, Miklós AU - Nagy, Gergely AU - Szász, Eszter AU - Kötél, Dóra AU - Török, János TI - Stable correlation structure among multiple plumage colour traits: can they work as a single signal? JF - BIOLOGICAL JOURNAL OF THE LINNEAN SOCIETY J2 - BIOL J LINN SOC VL - 114 PY - 2015 IS - 1 SP - 92 EP - 108 PG - 17 SN - 0024-4066 DO - 10.1111/bij.12412 UR - https://m2.mtmt.hu/api/publication/2811238 ID - 2811238 N1 - Funding Agency and Grant Number: Orszagos Tudomanyos Kutatasi Alapprogramok (OTKA) grantsOrszagos Tudomanyos Kutatasi Alapprogramok (OTKA) [K75618, K101611]; Bolyai fellowshipHungarian Academy of Sciences; Erdok a Kozjoert Alapitvany; Pilis Park Forestry Funding text: We thank G. Blazi, R. Fozo, R. Hargitai, M. Herenyi, D. Kiss, G. Marko, B. Rosivall, B. Siklodi, A. Szegedi, and E. Szollosi for help with the fieldwork. We are grateful to eight anonymous reviewers for constructive comments. This work was supported by Orszagos Tudomanyos Kutatasi Alapprogramok (OTKA) grants K75618 to JT and K101611 to GH, a Bolyai fellowship to GH, the Erdok a Kozjoert Alapitvany, and the Pilis Park Forestry. LA - English DB - MTMT ER - TY - JOUR AU - Hegyi, Gergely AU - Laczi, Miklós AU - Herényi, Márton AU - Markó, Gábor AU - Nagy, Gergely AU - Rosivall, Balázs AU - Szász, Eszter AU - Török, János TI - Functional integration of multiple sexual ornaments: signal coherence and sexual selection JF - AMERICAN NATURALIST J2 - AM NAT VL - 200 PY - 2022 IS - 4 SP - 486 EP - 505 PG - 20 SN - 0003-0147 DO - 10.1086/720620 UR - https://m2.mtmt.hu/api/publication/32699650 ID - 32699650 N1 - Behavioral Ecology Group, Department of Systematic Zoology and Ecology, Eötvös Loránd University (ELTE), Pázmány Péter sétány 1/C, Budapest, H-1117, Hungary Barn Owl Foundation, Temesvári út 8, Orosztony, H-8744, Hungary Department of Zoology and Ecology, Hungarian University of Agriculture and Life Sciences, Páter Károly utca 1, Gödöllő, H-2100, Hungary Department of Plant Pathology, Institute of Plant Protection, Hungarian University of Agriculture and Life Sciences, Ménesi út 44, Budapest, H-1118, Hungary Evolutionary Ecology Group, Institute of Ecology and Botany, Centre for Ecological Research, Alkotmány utca 2-4, Vácrátót, H-2163, Hungary Ecology Research Group of the Hungarian Academy of Sciences, Pázmány Péter sétány 1/C, Budapest, H-1117, Hungary Export Date: 15 November 2022 CODEN: AMNTA Correspondence Address: Hegyi, G.; Behavioral Ecology Group, Pázmány Péter sétány 1/C, Hungary; email: gergely.hegyi@ttk.elte.hu LA - English DB - MTMT ER - TY - JOUR AU - Hegyi, Gergely AU - Jenni-Eiermann, Susanne AU - Boross, Nóra AU - Garamszegi, László Zsolt AU - Laczi, Miklós AU - Kötél, Dóra AU - Krenhardt, Katalin AU - Jablonszky, Mónika AU - Markó, Gábor AU - Nagy, Gergely AU - Rosivall, Balázs AU - Szász, Eszter AU - Török, János TI - Ornaments and condition: plumage patch sizes, nutritional reserve state, reserve accumulation, and reserve depletion JF - BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY J2 - BEHAV ECOL SOCIOBIOL VL - 73 PY - 2019 IS - 6 PG - 10 SN - 0340-5443 DO - 10.1007/s00265-019-2701-0 UR - https://m2.mtmt.hu/api/publication/30708346 ID - 30708346 N1 - Behavioural Ecology Group, Department of Systematic Zoology and Ecology, ELTE Eötvös Loránd University, Pázmány Péter sétány 1/C, Budapest, H-1117, Hungary Schweizerische Vogelwarte, Seerose 1, Sempach, CH-6204, Switzerland Balaton Limnological Institute, Centre for Ecological Research, Hungarian Academy of Sciences, Klebelsberg Kuno utca 3, Tihany, H-8237, Hungary Institute of Ecology and Botany, Centre for Ecological Research, Hungarian Academy of Sciences, Alkotmány utca 2-4, Vácrátót, H-2163, Hungary Department of Evolutionary Ecology, Estación Biológica de Doñana-CSIC, c/Americo Vespucio, s/n, Seville, 41092, Spain MTA-ELTE Theoretical Biology and Evolutionary Ecology Research Group, Department of Plant Systematics, Ecology and Theoretical Biology, Eötvös Loránd University, Pázmány Péter sétány 1/C, Budapest, H-1117, Hungary The Barn Owl Foundation, Temesvári út 8, Orosztony, H-8744, Hungary Department of Plant Pathology, Szent István University, Ménesi út 44, Budapest, H-1118, Hungary Ecology Research Group of the Hungarian Academy of Sciences, Pázmány Péter sétány 1/C, Budapest, H-1117, Hungary Export Date: 30 September 2020 CODEN: BESOD Correspondence Address: Hegyi, G.; Behavioural Ecology Group, Department of Systematic Zoology and Ecology, ELTE Eötvös Loránd University, Pázmány Péter sétány 1/C, Hungary; email: gergely.hegyi@ttk.elte.hu Behavioural Ecology Group, Department of Systematic Zoology and Ecology, ELTE Eötvös Loránd University, Pázmány Péter sétány 1/C, Budapest, H-1117, Hungary Schweizerische Vogelwarte, Seerose 1, Sempach, CH-6204, Switzerland Balaton Limnological Institute, Centre for Ecological Research, Hungarian Academy of Sciences, Klebelsberg Kuno utca 3, Tihany, H-8237, Hungary Institute of Ecology and Botany, Centre for Ecological Research, Hungarian Academy of Sciences, Alkotmány utca 2-4, Vácrátót, H-2163, Hungary Department of Evolutionary Ecology, Estación Biológica de Doñana-CSIC, c/Americo Vespucio, s/n, Seville, 41092, Spain MTA-ELTE Theoretical Biology and Evolutionary Ecology Research Group, Department of Plant Systematics, Ecology and Theoretical Biology, Eötvös Loránd University, Pázmány Péter sétány 1/C, Budapest, H-1117, Hungary The Barn Owl Foundation, Temesvári út 8, Orosztony, H-8744, Hungary Department of Plant Pathology, Szent István University, Ménesi út 44, Budapest, H-1118, Hungary Ecology Research Group of the Hungarian Academy of Sciences, Pázmány Péter sétány 1/C, Budapest, H-1117, Hungary Export Date: 14 October 2020 CODEN: BESOD Correspondence Address: Hegyi, G.; Behavioural Ecology Group, Department of Systematic Zoology and Ecology, ELTE Eötvös Loránd University, Pázmány Péter sétány 1/C, Hungary; email: gergely.hegyi@ttk.elte.hu LA - English DB - MTMT ER - TY - JOUR AU - Hegyi, Gergely AU - Laczi, Miklós AU - Boross, Nóra AU - Jablonszky, Mónika AU - Kötél, D AU - Krenhardt, Katalin AU - Markó, Gábor AU - Nagy, Gergely AU - Rosivall, Balázs AU - Szász, Eszter AU - Garamszegi, László Zsolt AU - Török, János TI - When to measure plumage reflectance: A lesson from Collared Flycatchers Ficedula albicollis JF - IBIS J2 - IBIS VL - 161 PY - 2019 IS - 1 SP - 27 EP - 34 PG - 8 SN - 0019-1019 DO - 10.1111/ibi.12609 UR - https://m2.mtmt.hu/api/publication/3385332 ID - 3385332 N1 - Behavioural Ecology Group, Department of Systematic Zoology and Ecology, Eötvös Loránd University, Pázmány Péter sétány 1/C, Budapest, H-1117, Hungary The Barn Owl Foundation, Temesvári út 8, Orosztony, H-8744, Hungary Balaton Limnological Institute, Centre for Ecological Research, Hungarian Academy of Sciences, Klebelsberg Kuno utca 3, Tihany, H-8237, Hungary Department of Plant Pathology, Szent István University, Ménesi út 44, Budapest, H-1118, Hungary Department of Evolutionary Ecology, Estación Biológica de Doñana-CSIC, c/Americo Vespucio s/n, Seville, 41092, Spain MTA-ELTE Theoretical Biology and Evolutionary Ecology Research Group, Department of Plant Systematics, Ecology and Theoretical Biology, Eötvös Loránd University, Pázmány Péter sétány 1/C, Budapest, H-1117, Hungary Ecology Research Group of the Hungarian Academy of Sciences, Pázmány Péter sétány 1/C, Budapest, H-1117, Hungary Export Date: 23 September 2020 CODEN: IBISA Correspondence Address: Hegyi, G.; Behavioural Ecology Group, Department of Systematic Zoology and Ecology, Eötvös Loránd University, Pázmány Péter sétány 1/C, Hungary; email: gehegyi@caesar.elte.hu Behavioural Ecology Group, Department of Systematic Zoology and Ecology, Eötvös Loránd University, Pázmány Péter sétány 1/C, Budapest, H-1117, Hungary The Barn Owl Foundation, Temesvári út 8, Orosztony, H-8744, Hungary Balaton Limnological Institute, Centre for Ecological Research, Hungarian Academy of Sciences, Klebelsberg Kuno utca 3, Tihany, H-8237, Hungary Department of Plant Pathology, Szent István University, Ménesi út 44, Budapest, H-1118, Hungary Department of Evolutionary Ecology, Estación Biológica de Doñana-CSIC, c/Americo Vespucio s/n, Seville, 41092, Spain MTA-ELTE Theoretical Biology and Evolutionary Ecology Research Group, Department of Plant Systematics, Ecology and Theoretical Biology, Eötvös Loránd University, Pázmány Péter sétány 1/C, Budapest, H-1117, Hungary Ecology Research Group of the Hungarian Academy of Sciences, Pázmány Péter sétány 1/C, Budapest, H-1117, Hungary Export Date: 30 September 2020 CODEN: IBISA Correspondence Address: Hegyi, G.; Behavioural Ecology Group, Department of Systematic Zoology and Ecology, Eötvös Loránd University, Pázmány Péter sétány 1/C, Hungary; email: gehegyi@caesar.elte.hu AB - Sexually selected colour traits of bird plumage are widely studied. Although the plumage is replaced only at one or two yearly moults, plumage colour has long been shown to change between moults. Nevertheless, most studies measure colour weeks to months after the courtship period, typically at nestling rearing, and it is unclear whether these measurements yield relevant data concerning the primary process of sexual selection. Here we analyse repeated spectrometric data taken from male Collared Flycatchers during social courtship and nestling rearing. We show that some spectral traits are not correlated between the two measurements and that within-individual correlation declines significantly with the likely exposure of the plumage area to damage and soiling. There is an overall decline in spectral trait exaggeration during breeding, but trait decline is not closely related to measurement latency, especially not in the damage-exposed areas. Finally, sexual selection estimates differ depending on whether they are derived from spectra measured during courtship or during nestling rearing. These results suggest that, contrary to current practice, measurements of plumage reflectance should be made during the primary period of sexual signalling. Spectral trait decline during breeding could also be studied as a possible signal for mates and neighbours. © 2018 British Ornithologists' Union. LA - English DB - MTMT ER - TY - JOUR AU - Hegyi, Gergely AU - Nagy, Gergely AU - Török, János TI - Reduced compensatory growth capacity in mistimed broods of a migratory passerine. JF - OECOLOGIA J2 - OECOLOGIA VL - 172 PY - 2013 IS - 1 SP - 279 EP - 291 PG - 13 SN - 0029-8549 DO - 10.1007/s00442-012-2487-5 UR - https://m2.mtmt.hu/api/publication/2116737 ID - 2116737 N1 - Cited By :8 Export Date: 3 October 2022 CODEN: OECOB Correspondence Address: Hegyi, G.; Behavioural Ecology Group, Pázmány Péter sétany 1/C, Budapest, 1117, Hungary; email: gehegyi@yahoo.com AB - Phenotypic plasticity has recently been proposed to increase population viability when rapid anthropogenic environmental changes cannot be tracked by means of evolution. This assumes that environmental changes do not constrain phenotypic plasticity itself, which has rarely been examined in natural populations. In areas of climate warming, many long-distance migratory birds breed increasingly late relative to the period of peak food supply, and the temporal mismatch may constrain plastic life-history traits such as nestling growth. We combined 23 years of food availability and breeding data with a 3-year experimental manipulation of nestling growth trajectories in a Central European population of collared flycatchers (Ficedula albicollis) to examine the potential impact of climate-related mistimed breeding on nestling developmental plasticity. Timing of the food peak was predicted by winter climate, and the median hatching date of broods was earlier in springs with earlier food peaks. However, the adjustment of hatching date was incomplete and the population largely missed the food peak in years with very early food peaks. After imposing a temporary, experimental food shortage on nestlings, the extent of compensatory growth in body mass differed among years, and this difference was apparently related to the distance of hatching dates from the yearly food peak. Growth compensation declined with distance from the peak. These results suggest that mistimed phenology may not only create permanently adverse conditions for migratory species but it may also constrain the plastic responses of individuals to temporary disturbances. Therefore, climate change may not only favour but also restrict phenotypic plasticity. LA - English DB - MTMT ER - TY - JOUR AU - Herczeg, Gábor AU - Urszán, Tamás János AU - Orf, Stephanie AU - Nagy, Gergely AU - Kotrschal, Alexander AU - Kolm, Niclas TI - Yes, correct context is indeed the key: an answer to Haave‐Audet et al. 2019 JF - JOURNAL OF EVOLUTIONARY BIOLOGY J2 - J EVOLUTION BIOL VL - 32 PY - 2019 IS - 12 SP - 1450 EP - 1455 PG - 6 SN - 1010-061X DO - 10.1111/jeb.13548 UR - https://m2.mtmt.hu/api/publication/30854886 ID - 30854886 N1 - Funding Agency and Grant Number: Hungarian National Research, Development and Innovation Fund [SNN-125627]; Swedish Research CouncilSwedish Research CouncilEuropean Commission [2012-03624, 2016-03435]; Knut and Alice Wallenberg FoundationKnut & Alice Wallenberg Foundation [1022013.0072] Funding text: Hungarian National Research, Development and Innovation Fund, Grant/Award Number: SNN-125627; The Swedish Research Council, Grant/Award Number: 2012-03624 and 2016-03435; Knut and Alice Wallenberg Foundation, Grant/Award Number: 1022013.0072 LA - English DB - MTMT ER -