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001-es BibID:BIBFORM104477
035-os BibID:(WoS)000837155300003 (Scopus)85136153178 (cikkazonosító)e13660
Első szerző:Fülöp Attila (biológus)
Cím:Fighting ability, personality and melanin signalling in free-living Eurasian tree sparrows (Passer montanus) / Attila Fülöp, Zoltán Németh, Bianka Kocsis, Bettina Deák-Molnár, Tímea Bozsoky, Gabriella Csöppü, Zoltán Barta
Dátum:2022
ISSN:2167-8359
Megjegyzések:Background Individuals' access to resources is often decided during dyadic contests the outcome of which is determined by the fighting (or competitive) ability of the participants. Individuals' fighting ability (termed also as resource-holding power or potential, RHP) is usually associated with individual features (e.g., sex, age, body size) and is also frequently signalled through various ornaments like the black throat patch (bib) in many birds. Individual personality is a behavioural attribute often linked to fighting ability as well. Based on earlier studies, however, the relationship between personality and fighting ability is far from being straightforward. While accounting for sex and body size, we studied whether exploratory behaviour, an aspect of personality, predicts fighting ability when competing for food during winter in free-living Eurasian tree sparrows (Passer montanus). We also investigated whether the bib can serve as a potential indicator of individual competitiveness in this species. Methods We captured adult tree sparrows, marked them with a unique combination of colour rings, and collected data about the individuals' sex, body size, bib size and exploratory behaviour. Birds were then released and the agonistic behaviour of the marked individuals was recorded while foraging in groups on bird feeding platforms. Results The probability of winning a fight, a proxy for fighting ability of individuals, was not related to exploratory behaviour, in either of the sexes. However, bib size was positively related to probability of winning in females, but not in males. Body size was not associated with probability of winning neither in males, nor in females. Conclusions Our results suggest that, at least in tree sparrows, the outcome of dyadic encounters over food during the non-breeding period are not determined by the exploratory personality of individuals. However, our findings provide further support for a status signalling role of the black bib in tree sparrows, and hint for the first time that bib size might function as a status signal in females as well. Finally, our results do not confirm that body size could serve as an indicator of fighting ability (i.e., RHP) in this species.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Competition
Contest
Resource-holding potential
Exploratory behaviour
Sex differences
Badge of status
Passer montanus
Megjelenés:PeerJ. - 10 (2022), p. 1-24. -
További szerzők:Németh Zoltán (1976-) (biológus) Kocsis Bianka Deák-Molnár Bettina Bozsoky Tímea Csöppü Gabriella Barta Zoltán (1967-) (biológus, zoológus)
Pályázati támogatás:OTKA-112527
OTKA
EFOP-3.6.1-16-2016-00022
EFOP
TKP2020-IKA-04
Egyéb
MAEO 2021-22/166661
Egyéb
FK124414
OTKA
János Bolyai Research Scholarship
MTA
ÚNKP-21-5
Egyéb
Magyar Vidékért (Pro Regione) Alapítvány
Egyéb
MTA-DE
MTA
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DOI
Intézményi repozitóriumban (DEA) tárolt változat
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2.

001-es BibID:BIBFORM096488
035-os BibID:(WoS)000493378300004 (Scopus)85072370499
Első szerző:Fülöp Attila (biológus)
Cím:Personality and social foraging tactic use in free-living Eurasian tree sparrows (Passer montanus) / Fülöp Attila, Németh Zoltán, Kocsis Bianka, Deák-Molnár Bettina, Bozsoky Tímea, Barta Zoltán
Dátum:2019
ISSN:1045-2249
Megjegyzések:Group-foraging individuals often use alternative behavioral tactics to acquire food: some individuals, the producers, actively search for food, whereas others, the scroungers, look for opportunities to exploit the finders' discoveries. Although the use of social foraging tactics is partly flexible, yet some individuals tend to produce more, whereas others largely prefer to scrounge. This between-individual variation in tactic use closely resembles the phenomenon of animal personality; however, the connection between personality and social foraging tactic use has rarely been investigated in wild animals. Here, we studied this relationship in free-living Eurasian tree sparrows (Passer montanus) during 2 winters. We found that in females, but not in males, social foraging tactic use was predicted by personality: more exploratory (i.e., more active in a novel environment) females scrounged more. Regardless of sex, the probability of scrounging increased with the density of individuals foraging on feeders and the time of feeding within a foraging bout, that is, the later the individual foraged within a foraging bout the higher the probability of scrounging was. Our results demonstrate that consistent individual behavioral differences are linked, in a sex-dependent manner, to group-level processes in the context of social foraging in free-living tree sparrows, suggesting that individual behavioral traits have implications for social evolution.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
exploration
open-field test
producer
scrounger
social behavior
Megjelenés:Behavioral Ecology. - 30 : 4 (2019), p. 894-903. -
További szerzők:Németh Zoltán (1976-) (biológus) Kocsis Bianka Deák-Molnár Bettina Bozsoky Tímea Barta Zoltán (1967-) (biológus, zoológus)
Pályázati támogatás:OTKA-112527
OTKA
PD121013
OTKA
FK124414
OTKA
EFOP-3.6.1-16-2016-00022
EFOP
Internet cím:Szerző által megadott URL
DOI
Intézményi repozitóriumban (DEA) tárolt változat
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3.

001-es BibID:BIBFORM087511
Első szerző:Kiss Johanna (zoológus)
Cím:Differential movement and activity patterns of sexes in a biparental beetle during the reproductive season / Kiss Johanna, Németh Zoltán, Kosztolányi András, Barta Zoltán
Dátum:2020
ISSN:0307-6946
Megjegyzések:Biparental care is stabilised if parents perform different tasks during care. Specialised parental roles may require different time and energy budgets that in turn are expected to influence the activity and space use of sexes. Here we investigate movement patterns of the biparental Lethrus apterus beetle using a grid of pitfall traps in their natural habitat. Sexes of the burrow building L. apterus perform different roles during caregiving, as females collect most of the leaves, which serve as food for the offspring while paired males stay mostly in the burrow. We hypothesised that sex differences in mate search and parental activities are reflected in movement patterns. We found that females frequently travelled short distances, whereas males were detected less often but when detected, they travelled significantly longer distances than females. Our results are consistent with the notion that efficient parental food provisioning requires more localised movement and activity patterns. Furthermore, the long distance movements of some males may indicate active mate searching behaviour.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Biparental care
Geotrupidae
insect
movement activity
sex role
Megjelenés:Ecological Entomology. - 45 : 6 (2020), p. 1504-1508. -
További szerzők:Németh Zoltán (1976-) (biológus) Kosztolányi András (1971-) (biológus) Barta Zoltán (1967-) (biológus, zoológus)
Pályázati támogatás:K 112670
Egyéb
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Intézményi repozitóriumban (DEA) tárolt változat
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4.

001-es BibID:BIBFORM096412
035-os BibID:(cikkazonosító)104253 (WoS)000674562700013 (Scopus)85107153228
Első szerző:Nagy Nikoletta Andrea (biológus)
Cím:Inotocin, a potential modulator of reproductive behaviours in a biparental beetle, Lethrus apterus / Nikoletta A. Nagy, Zoltán Németh, Edit Juhász, Szilárd Póliska, Rita Rácz, Johanna Kiss, András Kosztolányi, Zoltán Barta
Dátum:2021
ISSN:0022-1910
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Journal Of Insect Physiology. - 132 (2021), p. 1-9. -
További szerzők:Németh Zoltán (1976-) (biológus) Juhász Edit Póliska Szilárd (1978-) (biológus) Rácz Rita (1989-) (biológus) Kiss Johanna (1989-) (zoológus) Kosztolányi András (1971-) (biológus) Barta Zoltán (1967-) (biológus, zoológus)
Pályázati támogatás:K112670
Egyéb
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Intézményi repozitóriumban (DEA) tárolt változat
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5.

001-es BibID:BIBFORM079614
035-os BibID:(cikkazonosító)e4047 (PMID)29201562 (PMCID)PMC5710163 (WoS)000416519100001 (Scopus)85035315063
Első szerző:Nagy Nikoletta Andrea (biológus)
Cím:Evaluation of potential reference genes for real-time qPCR analysis in a biparental beetle, Lethrus apterus (Coleoptera: Geotrupidae) / Nikoletta A. Nagy, Zoltán Németh, Edit Juhász, Szilárd Póliska, Rita Rácz, András Kosztolányi, Zoltán Barta
Dátum:2017
ISSN:2167-8359
Megjegyzések: Hormones play an important role in the regulation of physiological, developmental and behavioural processes. Many of these mechanisms in insects, however, are still not well understood. One way to investigate hormonal regulation is to analyse gene expression patterns of hormones and their receptors by real-time quantitative polymerase chain reaction (RT-qPCR). This method, however, requires stably expressed reference genes for normalisation. In the present study, we evaluated 11 candidate housekeeping genes as reference genes in samples of Lethrus apterus, an earth-boring beetle with biparental care, collected from a natural population. For identifying the most stable genes we used the following computational methods: geNorm, NormFinder, BestKeeper, comparative delta Ct method and RefFinder. Based on our results, the two body regions sampled (head and thorax) differ in which genes are most stably expressed. We identified two candidate reference genes for each region investigated: ribosomal protein L7A and RP18 in samples extracted from the head, and ribosomal protein L7A and RP4 extracted from the muscles of the thorax. Additionally, L7A and RP18 appear to be the best reference genes for normalisation in all samples irrespective of body region. These reference genes can be used to study the hormonal regulation of reproduction and parental care in Lethrus apterus in the future.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Insect
Parental care
Housekeeping gene
Megjelenés:PeerJ. - 5 (2017), p. 1-16. -
További szerzők:Németh Zoltán (1976-) (biológus) Juhász Edit Póliska Szilárd (1978-) (biológus) Rácz Rita (1989-) (biológus) Kosztolányi András (1971-) (biológus) Barta Zoltán (1967-) (biológus, zoológus)
Pályázati támogatás:NKFIH K112670
egyéb
NKFIH K112527
egyéb
EFOP-3.6.1-16-2016-00022
EFOP
NKFIH PD121013
egyéb
Internet cím:Szerző által megadott URL
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Intézményi repozitóriumban (DEA) tárolt változat
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6.

001-es BibID:BIBFORM074569
Első szerző:Rádai Zoltán (biológus)
Cím:Sex-dependent immune response in a semelparous spider / Rádai Zoltán, Németh Zoltán, Barta Zoltán
Dátum:2018
Megjegyzések:Previous studies on arthropods showed that seasonality and parity in breeding considerably impact the direction of sex differences in immunocompetence, and it has been suggested that life span and the time window available for breeding play key roles in shaping sex-differences in immunity. One proposed mechanism behind this phenomenon is differential investment into life history traits in sexes. Here, we tested whether in a seasonally breeding semelparous arthropod sexes differ in their immunocompetence, predicting that females would show weaker immune response than males. We compared encapsulation efficiency (a well-established and widely used method for assessing immunocompetence) of freshly matured, virgin males and females of the lycosid spider Pardosa agrestis (Westring, 1861). On average, males mounted stronger immune response than females and the extent of encapsulation was positively associated with prosoma length in males, but not in females. Also, time until maturation was positively related to the extent of encapsulation in both sexes, but did not significantly affect adult prosoma length. We propose that sex-difference in encapsulation is likely shaped by combined effects of relatively higher costs of reproduction in females, narrow time window of reproductive activity, and the absence of trade-off between current and future reproduction.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Sex-bias
Immunity
Reproductive strategy
Semelparity
Megjelenés:Naturwissenschaften. - 105 : 7-8 (2018), p. 39. -
További szerzők:Németh Zoltán (1976-) (biológus) Barta Zoltán (1967-) (biológus, zoológus)
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Intézményi repozitóriumban (DEA) tárolt változat
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