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1.

001-es BibID:BIBFORM030944
Első szerző:Bátori Edit
Cím:Patterns of genetic and taxonomic differentiation in three Melitaea (subg. Mellicta) species (Lepidoptera, Nymphalidae, Nymphalinae) / E. Bátori, K. Pecsenye, J. Bereczki, Z. Varga
Dátum:2012
ISSN:1366-638X
Megjegyzések:In conservation genetics the existence of Evolutionarily Significant Units (ESU) is a crucial question in threatened or vulnerable species. It is of particular concern to determine whether different subspecies or ecotypes of a species can be considered as separate ESUs. Some melitae subg. Mellicta species (e.g. Mellicta aurelia, Mellicta britomartis) are declining or scarce in Europe. Therefore, the level of genetic differentiation and pattern of genetic variation were surveyed in three Melitaea (subg. Mellicta)species. Their habitat requirements and food plants partly overlap; accordingly they often re-occur in the same habitat. M. britomartis and M. aurelia have one brood per year in Hungary, while Mellicta athalia has a monovoltine and a bivoltine ecotype. The purpose of the study was to estimate the number of genetically differentiated ESUs among these species in the Carpathian basin. Samples were taken from 5 Hungarian regions and a few samples were collected in Transylvania as well. Enzyme polymorphism was studied using polyacrylamide gel electrophoresis. The structure of genetic variation was analysed by F-statistics, AMOVA, PCA and Bayesian clustering method. UPGMA dendrogram was constructed on the basis of Cavalli- Sforza and Edwards chord distances. The three species are clearly differentiated from each other in all statistical analyses. They are evidently different Evolutionary Significant Units. The two ecotypes of M. athalia, however, do not show any genetic differentiation.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Genetic differentiation
Evolutionary Significant Unit
Functional Conservation Unit
mellicta species
Megjelenés:Journal of Insect Conservation. - 16 : 5 (2012), p. 647-656. -
További szerzők:Pecsenye Katalin (1954-) (biológus) Bereczki Judit (1979-) (biológus) Varga Zoltán (1939-) (professor emeritus, evolúcióbiológus, zoológus)
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2.

001-es BibID:BIBFORM079618
Első szerző:Pecsenye Katalin (biológus)
Cím:Regional pattern of genetic variation in the Eastern Central European populations of Euphydryas maturna (Lepidoptera: Nymphalidae) / Katalin Pecsenye, Andrea Tóth, János P. Tóth, Judit Bereczki, Zoltán Varga
Dátum:2017
ISSN:1366-638X 1572-9753
Megjegyzések:The aim of this study was to delineate functional conservation units (FCUs) in Scarce Fritillary Euphydryas maturna (Linnaeus, 1758) populations in eastern Central Europe. We analyzed the level and structure of genetic variation using allozymes as markers in 26 Scarce Fritillary populations originating from nine geographic regions. Considering the reproductive strategy of E. maturna, we assumed that populations are strongly exposed to genetic drift. Accordingly, we hypothesized: (i) A low level of genetic variation within populations, and; (ii) A high level of differentiation among them with little evidence of geographic pattern. The results of this study mostly fulfilled our expectations: (i) Scarce Fritillary populations of eastern Central Europe exhibited a relatively low level of polymorphism at investigated enzyme loci, and; (ii) Comparatively strong differentiation was detected among populations. As opposed to our expectation, however, a more-or-less clear pattern of differentiation was revealed by the results of our Bayesian-clustering analysis. Four genetic regions were distinguished on the basis of their average cluster membership coefficients, specifically Dobrogea (Romania), North and East Hungary (composed of four geographic regions), Central and West Hungary (involving three geographic regions), and Transylvania. Three of these genetic regions were previously distinguished as separate subspecies, comprising E. maturna idunides (Central and West Hungary), E. maturna partiensis (North and East Hungary including Transylvania), and E. maturna opulenta (Dobrogea, Romania). These three putative subspecies can be considered as Scarce Fritillary FCUs in eastern Central Europe.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Functional conservation unit
Allozyme polymorphism
Regional differentiation
Megjelenés:Journal of Insect Conservation. - 21 : 2 (2017), p. 171-181. -
További szerzők:Tóth Andrea Tóth János Pál (1981-) Bereczki Judit (1979-) (biológus) Varga Zoltán (1939-) (professor emeritus, evolúcióbiológus, zoológus)
Pályázati támogatás:NKFP-3 B/023/2004
egyéb
OTKA K84071
OTKA
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3.

001-es BibID:BIBFORM059330
Első szerző:Pecsenye Katalin (biológus)
Cím:Loss of genetic variation in declining populations of Aricia artaxerxes in Northern Hungary / Katalin Pecsenye, Rita Rácz, Judit Bereczki, Edit Bátori, Zoltán Varga
Dátum:2014
ISSN:1366-638X 1572-9753
Megjegyzések:Rapid decline of population size often gives rise to loss of genetic variation and may result in a reduction in fitness. It is, therefore, essential to detect past demographic changes in populations of endangered species. Aricia artaxerxes occurs in two regions of Northern Hungary: Bükk Mts. and the Aggtelek Karst region. The species prefers short-grass habitats, which are subject to succession. Due to climatic differences between the two regions succession is more rapid in the Bükk plateau resulting in the decline and isolation of A. artaxerxes populations there. In contrast, most populations have remained rather large and stable in the Karst region. This situation provides an excellent possibility to compare the genetic composition of stable and declining populations. A. artaxerxes was collected in four populations of the Bükk Mountains and in ten in the Aggtelek Karst region in 2002 and 2005. We analysed 19 polymorphic allozyme loci in all samples. The results revealed an extremely high level of enzyme polymorphism in A. artaxerxes. Most parameters of polymorphism proved to be significantly higher in the Karst region compared to the Bükk. The shape of the distribution of alleles among the frequency classes indicated the effect of bottleneck in three Bükk and one Karst population. Though heterozygote excess was only significant in one Bükk population a tendency was observed for higher values of standardised heterozygote excess in those populations that had a typical bottleneck distribution of alleles. Our results clearly demonstrated that those populations/subpopulations that compose a network with intense migration are able to maintain their genetic diversity in a long run, while the isolated small populations of the Bükk plateau have lost a sizeable part of their variation.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Enzyme polymorphism, small pupolation, bottleneck, loss of variation
Élettudományok - Biológiai tudományok
Megjelenés:Journal of Insect Conservation. - 18 : 2 (2014), p. 233-243. -
További szerzők:Rácz Rita (1989-) (biológus) Bereczki Judit (1979-) (biológus) Bátori Edit Varga Zoltán (1939-) (professor emeritus, evolúcióbiológus, zoológus)
Pályázati támogatás:MTA-DE Lendület
MTA
Viselkedésökológiai Kutatócsoport
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4.

001-es BibID:BIBFORM023523
Első szerző:Pecsenye Katalin (biológus)
Cím:Pattern of genetic differentiation in two Isophya species (Orthoptera: Tettigonoidea) in north-east Hungary / Katalin Pecsenye, Edit Vadkerti, Zoltán Varga
Dátum:2003
Megjegyzések:Allozyme polymorphism was studied in two populations of Isophya kraussi and Isophya stysi. Both species are flightless and have low dispersal ability. As a consequence, we expected high level of genetic differentiation among their local populations. Samples were collected in three regions of Hungary. Enzyme polymorphism was investigated at 10 loci (Aldox, Est, Got, [alpha]Gpdh, Hk, Idh, Mdh, Me, Pgi and Pgm) in both species. High levels of polymorphism were detected in all samples. [alpha]Gpdh proved to be diagnostic as there were no common alleles in the two species. At four further loci (Got, Hk, Mdh and Me), the two species had one common allele together with one or more differentiating alleles. We detected high FIT values implying a high level of genetic variation. The positive FIS values suggested a tendency of heterozygote deficiency in both species. The highly significant overall FST values indicated clear genetic differentiation among the local populations. Thus our results confirmed the taxonomic status of these two species. The dendrogram constructed on the basis of Nei's genetic distances and the results of the PCA analyses fully confirmed those obtained by F-statistics.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Enzyme polymorphism
Genetic differentiation
Hungary
Isophya
Megjelenés:Journal of Insect Conservation. - 7 : 4 (2003), p. 207-213. -
További szerzők:Vadkerti Edit Varga Zoltán (1939-) (professor emeritus, evolúcióbiológus, zoológus)
Internet cím:Intézményi repozitóriumban (DEA) tárolt változat
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5.

001-es BibID:BIBFORM103276
035-os BibID:(WoS)000840279300001 (Scopus)85136076142
Első szerző:Szanyi Kálmán (biológia, hidrobiológia, entomológia)
Cím:Attractivity of various artificial light sources to caddisfly (Trichoptera) species and its importance in their sampling and conservation / Kálmán Szanyi, Antal Nagy, Zoltán Varga, Ludvid Potish, Szabolcs Szanyi
Dátum:2022
ISSN:1366-638X 1572-9753
Megjegyzések:The artificial light sources are useful tools for sampling night active insects, however, they also possess potential environmental risks in their habitats. To test their applicability and evaluate environmental risk for caddisflies (Trichoptera), the attractivity of different portable light traps working with LED, UV and mixed-white light sources was studied and compared with attractivity of traditionally used mercury-vapour lamp (in Jermy-type light trap), which is tool of sampling and street-light. Analysing 1135 caught individuals of 19 species light sources emitting different wavelength spectra showed different attractivity and selectivity on caddisflies both on species and family levels. Attractivity of mercury-vapour lamp was generally lower than the other tested light sources. We found that the most attractive wavelength range for caddisflies is between 360 and 407 nm. One of the tested LED and mixed-white lamps together could cover this spectrum and a high and wide spectral peak of mixed-white light source between 375 and 391 nm resulted additional catches considering both species and number of individuals. Lamps emitting between 360 and 407 nm may be both a useful tool for sampling caddisflies and dangerous source of light pollution along lowland water courses where the sampled species are common and widespread.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Wavelength
Light trap
UV
Mercury vapour lamp
Transcarpathia
Environmental risk
Megjelenés:Journal of Insect Conservation. - 26 : 5 (2022), p. 839-849. -
További szerzők:Nagy Antal (1976-) (biológus) Varga Zoltán (1939-) (professor emeritus, evolúcióbiológus, zoológus) Potish, Ludvig Szanyi Szabolcs (1988-) (biológus, ökológus)
Pályázati támogatás:International Visegrad Found
Egyéb
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6.

001-es BibID:BIBFORM095982
Első szerző:Szanyi Szabolcs (biológus, ökológus)
Cím:Effect of dramatic alteration of landscape structure on the Orthoptera assemblages of Transcarpathian lowland meadows (West Ukraine) / Szanyi Sz., Potish L., Rácz I. A., Varga Z., Nagy A.
Dátum:2021
ISSN:1366-638X 1572-9753
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Journal of Insect Conservation. - 25 (2021), p. 759-768. -
További szerzők:Potish, Ludvig Rácz István András (1949-) (biológus) Varga Zoltán (1939-) (professor emeritus, evolúcióbiológus, zoológus) Nagy Antal (1976-) (biológus)
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