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1.

001-es BibID:BIBFORM096419
035-os BibID:(cikkazonosító)38 (WoS)000611543600001 (Scopus)85099821531
Első szerző:Fülöp Attila (biológus)
Cím:Sex-specific signalling of individual personality by a mutual plumage ornament in a passerine / Attila Fülöp, Dóra Lukács, Péter Imre Fábián, Bianka Kocsis, Gabriella Csöppü, Judit Bereczki, Zoltán Barta
Dátum:2021
ISSN:0340-5443
Megjegyzések:The significance of colour signals in species with strong sexual dimorphism and/or elaborated visual ornaments is rather well-understood. Less attention has, however, been devoted to study colour signals in species with weak or no apparent sexual dimorphism. In such species, an interesting possibility arises as both sexes can bear the same colour ornament(s) (i.e. sexes are mutually ornamented), but their signalling value might differ in males and females. We aimed to explore this possibility by investigating the phenotypic correlates of the black bib, a melanin-based plumage ornament, in the Eurasian tree sparrow (Passer montanus). More specifically, we studied the sex-dependent relationships between bib size and three aspects of individuals' phenotype: body condition (i.e. size-corrected body mass), physiology (i.e. cellular innate immunity/inflammation status, expressed through total leucocyte counts, and chronic physiological stress, expressed through the ratio of heterophils to lymphocytes) and individual personality (i.e. activity in a novel environment). We found that bib size was not associated with body condition and cellular innate immunity/inflammation status, but was positively related to physiological stress levels independent of sex. Furthermore, bib size was negatively associated with activity in males but positively in females. Our findings bring important correlative evidence that mutual ornamental traits may have sex-specific signalling value.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Melanin-based ornament
Personality
Physiology
Melanocortin hypothesis
Phenotypic integration
Passer montanus
Megjelenés:Behavioral Ecology And Sociobiology. - 75 : 2 (2021), p. 1-13. -
További szerzők:Lukács Dóra Fábián Péter Imre Kocsis Bianka Csöppü Gabriella Bereczki Judit (1979-) (biológus) Barta Zoltán (1967-) (biológus, zoológus)
Pályázati támogatás:OTKA-112527
OTKA
EFOP-3.6.1-16-2016-00022
EFOP
NKFIH-1150-6/2019
FIKP
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DOI
Intézményi repozitóriumban (DEA) tárolt változat
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2.

001-es BibID:BIBFORM084992
035-os BibID:(WoS)000408051500007 (Scopus)85025163686
Első szerző:Rácz Rita (biológus)
Cím:Additional polymorphic microsatellite loci for detailed population genetic studies of Lethrus apterus (Coleoptera: Geotrupidae) / Rácz Rita, Bereczki Judit, Kosztolányi András, Horváth Attila, Sziráki Szabolcs, Barta Zoltán
Dátum:2017
ISSN:1217-8837
Megjegyzések:In this study we attempted to isolate 13 additional microsatellites from the beetle Lethrus apterus and then to use them to screen for polymorphisms in 35 specimens collected from the northern Hungarian mountains. The newly developed markers presented in this paper are polymorphic, including between two and seven detected alleles per locus. The observed and expected heterozygosity per locus ranged between 0.057 and 0.686 and between 0.056 and 0.756, respectively, while two loci showed significant deviations from Hardy-Weinberg equilibrium. These deviations can be explained by the presence of null alleles. All loci cross-amplified in at least two out of four congeneric Lethrus species (L. bituberculatus, L. scoparius, L. strymonensis and L. perun). The polymorphic microsatellite markers we present for L. apterus will be valuable for future population genetic studies.
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény hazai lapban
folyóiratcikk
dinucleotide repeats
trinucleotide repeats
fragmentation
species conservation
parentage
Megjelenés:Acta Zoologica Academiae Scientiarum Hungaricae. - 63 : 3 (2017), p. 355-360. -
További szerzők:Bereczki Judit (1979-) (biológus) Kosztolányi András (1971-) (biológus) Horváth Attila (orvos) Sziráki Szabolcs Barta Zoltán (1967-) (biológus, zoológus)
Pályázati támogatás:K112670
OTKA
TÁMOP-4.2.4.A/2-11/1-2012-0001
TÁMOP
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Intézményi repozitóriumban (DEA) tárolt változat
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3.

001-es BibID:BIBFORM059314
Első szerző:Rácz Rita (biológus)
Cím:Isolation and Characterisation of 15 Microsatellite Loci from Lethrus apterus (Coleoptera: Geotrupidae) / Rita Rácz, Judit Bereczki, Gábor Sramkó, András Kosztolányi, János P. Tóth, Szilárd Póliska, Attila Horváth, Endre Barta, Zoltán Barta
Dátum:2015
ISSN:0003-455X 1797-2450
Megjegyzések:Fifteen new microsatellite markers for the beetle Lethrus apterus were developed and tested in 45 specimens from the North Hungarian Mountains. Fourteen of the markers developed were polymorphic, and the number of alleles per locus ranged from two to nine. The observed and expected heterozygosities of the polymorphic markers ranged from 0.178 to 0.578, and 0.201 to 0.698, respectively. One locus showed significant deviation from the Hardy-Weinberg equilibrium, probably due to null alleles. The primers were tested on four other Lethrus species (L. bituberculatus, L. scoparius, L. strymonensis and L. perun) and six other coleopteran species (Copris hispanus, Geotrupes stercorarius, Melolontha melolontha, Onthophagus taurus, Oryctes nasicornis and Protaetia affinis). Thirteen loci showed cross-amplification in the Lethrus species and only three loci could be amplified in some of the six other coleopteran species. The developed markers will be valuable in investigating the population genetic structure, behaviour and reproductive biology of L. apterus.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Élettudományok - Biológiai tudományok
Megjelenés:Annales Zoologici Fennici. - 52 : 1-2 (2015), p. 45-50. -
További szerzők:Bereczki Judit (1979-) (biológus) Sramkó Gábor (1981-) (biológus) Kosztolányi András (1971-) (biológus) Tóth János Pál (1981-) Póliska Szilárd (1978-) (biológus) Horváth Attila (1988-) (programtervező informatikus) Barta Endre (1963-) (molekuláris biológus) Barta Zoltán (1967-) (biológus, zoológus)
Pályázati támogatás:MTA-DE Lendület
MTA
Viselkedésökológiai Kutatócsoport
Internet cím:Szerző által megadott URL
DOI
Intézményi repozitóriumban (DEA) tárolt változat
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4.

001-es BibID:BIBFORM073444
035-os BibID:(Scopus)85026906262 (WOS)000406789200009
Első szerző:Sebestyén Flóra (biológus)
Cím:Insulin/IGF Signaling and Life History Traits in Response to Food Availability and Perceived Density in the Cnidarian Hydra vulgaris / Sebestyén Flóra, Póliska Szilárd, Rácz Rita, Bereczki Judit, Lénárt Kinga, Barta Zoltán, Lendvai Z. Ádám, Tökölyi Jácint
Dátum:2017
ISSN:0289-0003
Megjegyzések:Insulin/insulin-like growth factor signaling (IIS) is thought to be a central mediator of life history traits, but the generality of its role is not clear. Here, we investigated mRNA expression levels of three insulin-like peptide genes, the insulin-like receptor htk7, as well as several antioxidant genes, and the heat-shock protein hsp70 in the freshwater cnidarian Hydra vulgaris. Hydra polyps were exposed to a combination of different levels of food and perceived population density to manipulate life history traits (asexual reproduction and oxidative stress tolerance). We found that stress tolerance and the rate of asexual reproduction increased with food, and that these two effects were in significant interaction. Exposing animals to high perceived density resulted in increased stress tolerance or reduced reproduction only on lower food levels, but not on high food. The insulin-like receptor htk7 and the antioxidant gene catalase were significantly upregulated in the high density treatments. However, the expression level of insulin-like peptide genes, most antioxidant genes, and hsp70 were not affected by the experimental treatments. The higher expression level of htk7 may suggest that animals maintain a higher level of preparedness for insulin-like ligands at high population densities. However, the lack of difference between food levels suggests that IIS is not involved in regulating asexual reproduction and stress tolerance in hydra, or that its role is more subtle than a simple model of life history regulation would suggest.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Insulin signaling, Hydra vulgaris
Megjelenés:Zoological Science. - 34 : 4 (2017), p. 318-325. -
További szerzők:Póliska Szilárd (1978-) (biológus) Rácz Rita (1989-) (biológus) Bereczki Judit (1979-) (biológus) Lénárt Kinga (1994-) (biológus) Barta Zoltán (1967-) (biológus, zoológus) Lendvai Ádám Zoltán (1977-) (biológus) Tökölyi Jácint (1984-) (biológus)
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Intézményi repozitóriumban (DEA) tárolt változat
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5.

001-es BibID:BIBFORM104119
035-os BibID:(WoS)000483716900016 (Scopus)85065097799
Első szerző:Tóth János Pál
Cím:Phylogenetic relationships in the genus (Coleoptera: Geotrupidae) reveal contrasting evolutionary history in Europe / János P. Tóth, Judit Bereczki, Rita Rácz, Zoltán Varga, Zoltán Barta, Gábor Sramkó
Dátum:2019
ISSN:0307-6970
Megjegyzések:In this study we analysed for the first time the phylogenetic relationshipsamong the EuropeanLethrusspecies based on mitochondrial (COI, 16S) and nuclear(H3, wingless) markers. The phylogenetic inference based on these genes indicated thatthe EuropeanLethrusspecies form a monophyletic group with two main lineages. Oneof them is distributed in the central part of the Balkan Peninsula (North Macedonia,northwestern Greece and southwestern Bulgaria) and includes five species (L. perun,L. raymondi,L. strymonensis,L. halkidikiensisandL. elephas). Three species of theother clade (L. schaumii,L. aresandL. schneideri) occur in the eastern part of the BalkanPeninsula (southeastern Bulgaria and northeastern Greece) while its fourth member,L. apterus, could colonize much larger areas in central and eastern Europe. Despite itslarge geographic distribution,L. apterusproved to be a single species. By contrast, wefound strong intraspecific differentiation in bothL. schaumiiandL. halkidikiensisinspite of their restricted distribution. Surprisingly, two highly divergent mitogroups werealso detected within a singleL. schneideripopulation. As the microsatellite markersdid not show any differentiation between them, this finding is likely to be accountedfor by a unidirectional hybridization event. These findings highlight that phylogeneticstudies or species descriptions should not be based on mitochondrial markers alone. Ourstudy clearly demonstrates that allopatric speciation is the most important speciationmechanism in the European species of the genusLethrus, although we also hypothesizethat other well-known factors, such as hybridization or the glacial-interglacial dynamics,could significantly affect the speciation patterns of certain lineages.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Élettudományok - Biológiai tudományok
Megjelenés:Systematic Entomology. - 44:4 (2019), p. 899-910. -
További szerzők:Bereczki Judit (1979-) (biológus) Rácz Rita (1989-) (biológus) Varga Zoltán (1939-) (professor emeritus, evolúcióbiológus, zoológus) Barta Zoltán (1967-) (biológus, zoológus) Sramkó Gábor (1981-) (biológus)
Pályázati támogatás:MTA-DE Lendület
MTA
Viselkedésökológiai Kutatócsoport
OTKA-109223
OTKA
Internet cím:Szerző által megadott URL
DOI
Intézményi repozitóriumban (DEA) tárolt változat
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