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Article: New record of the viviparous lizard Zootoca vivipara (Jacquin, 1787) in Hungary

Szűcs, Boldizsár / Horváth, Győző F. / Purger, Jenő J.

Herpetozoa. 2022 Jan. 13, v. 35

2022

Abstract: AbstractThe lowland populations of the viviparous lizard Zootoca vivipara in the Carpathian Basin occur in cold, marshy relict habitats. In one of the largest wetlands in Hungary, Kis-Balaton, in 2016 its presence was confirmed by catching an individual ...

Abstract	AbstractThe lowland populations of the viviparous lizard Zootoca vivipara in the Carpathian Basin occur in cold, marshy relict habitats. In one of the largest wetlands in Hungary, Kis-Balaton, in 2016 its presence was confirmed by catching an individual with a small mammal live-trap. This new record is significant, since the nearest known sites of occurrence are at great distance and it is situated between the lowland viviparous populations of the north-northeast and the oviparous populations of the south (in Croatia).
Keywords	basins ; cold ; lizards ; ovipary ; small mammals ; Croatia ; Hungary
Language	English
Dates of publication	2022-0113
Size	p. 21-23.
Publishing place	Pensoft Publishers
Document type	Article
ZDB-ID	2474932-1
ISSN	2682-955X
ISSN	2682-955X
DOI	10.3897/herpetozoa.35.e73994
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Variation in the diet and breeding biology of the Common Barn-owl (Tyto alba) in a demographic cycle of Common Vole (Microtus arvalis) between two outbreaks×

Horváth Adrienn / Bank László / Horváth Győző F.

Ornis Hungarica, Vol 28, Iss 2, Pp 37-

2020 Volume 65

Abstract: In the present study, we analysed the variation of breeding parameters and the diet composition of the Common Barn-owl (Tyto alba) in three different demographic phases of the Common Vole (Microtus arvalis) in a complete population cycle between two ... ...

Abstract	In the present study, we analysed the variation of breeding parameters and the diet composition of the Common Barn-owl (Tyto alba) in three different demographic phases of the Common Vole (Microtus arvalis) in a complete population cycle between two outbreaks. The study was conducted in the south-eastern part of the Transdanubian region in South Hungary. For the analysis, we used data of 81 randomly selected first clutches from 2015 to 2019, a time period which represented a full demographic cycle of the Common Vole after the 2014 outbreak with an exceptionally high peak. We tested the impact of prey abundance and diversity of diet composition as continuous predictors as well as the demographic phase of Common Vole and the mesoregion as categorical explanatory variables on the measured reproductive outputs as response variables using Generalized Linear Models (GLM). Considering the breeding parameters, the number of fledglings, and fledging and reproductive success were significantly higher in the increase phase than during the vole crash phase. Based on GLM models, our results demonstrated that the clutch size of the Common Barn-owl is determined ultimately by the availability and consumption rate of the Common Vole as main prey, while other small mammal prey categories did not affect the clutch size. These results support the finding that the clutch size of vole-eating raptors and owls, which begin breeding periods in early spring predicts the vole abundance in this early spring period. Considering the other investigated small mammal prey groups, the alternative prey role was confirmed only in case of the Murid rodent prey categories (Apodemus spp., Muridae).
Keywords	reproductive output ; food consumption ; alternative prey ; outbreak ; Ecology ; QH540-549.5
Subject code	590
Language	English
Publishing date	2020-12-01T00:00:00Z
Publisher	Sciendo
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: The impact of the striped field mouse's range expansion on communities of native small mammals.

Tulis, Filip / Ševčík, Michal / Jánošíková, Radoslava / Baláž, Ivan / Ambros, Michal / Zvaríková, Lucia / Horváth, Gyözö

Scientific reports

2023 Volume 13, Issue 1, Page(s) 753

Abstract: Understanding species expansion as an element of the dispersal process is crucial to gaining a better comprehension of the functioning of the populations and the communities. Populations of the same species that are native in one area could be considered ...

Abstract	Understanding species expansion as an element of the dispersal process is crucial to gaining a better comprehension of the functioning of the populations and the communities. Populations of the same species that are native in one area could be considered nonindigenous, naturalised or invasive somewhere else. The striped field mouse has been expanding its range in south-western Slovakia since 2010, although the origin of the spread has still not been clarified. In light of the striped field mouse's life history, the recent range expansion is considered to be the expansion of a native species. This study analyses the impact of the striped field mouse's expansion on the native population and small mammal communities and confronts the documented stages of striped field mouse expansion with the stages of invasion biology. Our research replicates the design and compares results from past research of small mammals prior to this expansion at the same three study areas with the same 20 study sites and control sites. Several years after expansion, the striped field mouse has a 100% frequency of occurrence in all study sites and has become the dominant species in two of the study areas. The native community is significantly affected by the striped field mouse's increasing dominance, specifically: (i) we found a re-ordering of the species rank, mainly in areas with higher dominance, and (ii) an initial positive impact on diversity and evenness during low dominance of the striped field mouse turned markedly negative after crossing the 25% dominance threshold. Results suggested that the variation in the striped field mouse's dominance is affected by the northern direction of its spread. Our findings show that establishment in a new area, spread and impact on the native community are stages possibly shared by both invasive and native species during their range expansion.
MeSH term(s)	Animals ; Mammals ; Murinae ; Slovakia
Language	English
Publishing date	2023-01-14
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2615211-3
ISSN	2045-2322 ; 2045-2322
ISSN (online)	2045-2322
ISSN	2045-2322
DOI	10.1038/s41598-022-26919-z
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Author Correction: The impact of the striped field mouse's range expansion on communities of native small mammals.

Tulis, Filip / Ševčík, Michal / Jánošíková, Radoslava / Baláž, Ivan / Ambros, Michal / Zvaríková, Lucia / Horváth, Gyözö

Scientific reports

2023 Volume 13, Issue 1, Page(s) 10006

Language	English
Publishing date	2023-06-20
Publishing country	England
Document type	Published Erratum
ZDB-ID	2615211-3
ISSN	2045-2322 ; 2045-2322
ISSN (online)	2045-2322
ISSN	2045-2322
DOI	10.1038/s41598-023-36731-y
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Food-niche pattern of the Barn Owl (Tyto alba) in intensively cultivated agricultural landscape

Horváth Adrienn / Morvai Anita / Horváth Győző F.

Ornis Hungarica, Vol 26, Iss 1, Pp 27-

2018 Volume 40

Abstract: This study investigated the dietary niche of the Barn Owl (Tyto alba) in an intensively farmed landscape, based on pellet samples from 12 nesting pairs containing 25 animal taxa and 1,994 prey items after the breeding season in 2016. Based on land use ... ...

Abstract	This study investigated the dietary niche of the Barn Owl (Tyto alba) in an intensively farmed landscape, based on pellet samples from 12 nesting pairs containing 25 animal taxa and 1,994 prey items after the breeding season in 2016. Based on land use categories of the buffer area around each nest, three landscape types (agricultural, mosaic, urban) were considered, to analyse the diet composition and food-niche parameters. Niche breadth was calculated at the local and landscape level. Small mammals were the most frequent in the diet than other prey in each of the landscape types. The Common Vole (Microtus arvalis), considered to be an important agricultural pest was the most numerous prey in all landscape groups. The trophic niche of Barn Owl varied between 0.69 – 0.86 at the local level, and the overall value of niche breadth was significantly higher in the urban than in the other two landscape types. Our results showed that the increase of Common Vole frequency lead to a decrease in niche breadth; significantly negative relationship was detected between these parameters. Despite differences in niche breadth, similarly high niche overlaps were detected by the randomisation test in the three landscapes. Our results suggest that the diet composition of Barn Owls, mainly their food-niche pattern, reflected prey availability in the comparison of the studied landscapes, which pointed out that it is necessary to examine the dietary difference of Barn Owls at the finer scale of land use.
Keywords	feeding ecology ; niche breadth ; pellet analysis ; land use ; Ecology ; QH540-549.5
Subject code	710 ; 590
Language	English
Publishing date	2018-06-01T00:00:00Z
Publisher	Sciendo
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: Genetic variability and conservation of the endangered Pannonian root vole in fragmented habitats of an agricultural landscape

Kelemen, Krisztina A. / Urzi, Felicita / Buzan, Elena / Horváth, Győző F. / Tulis, Filip / Baláž, Ivan

Nature conservation. 2021 May 07, v. 43

2021

Abstract: The distribution of the endangered glacial relict subspecies, the Pannonian root vole Alexandromys oeconomus mehelyi Éhik, 1928, is restricted to scattered localities in south-western Slovakia, which belong to the north-eastern zone of its range. Human- ... ...

Abstract	The distribution of the endangered glacial relict subspecies, the Pannonian root vole Alexandromys oeconomus mehelyi Éhik, 1928, is restricted to scattered localities in south-western Slovakia, which belong to the north-eastern zone of its range. Human-induced changes and fragmentation of the landscape have led to the gradual loss of suitable habitats and threaten its long-term survival. The study area in the Danubian Lowland is characterised by small habitat fragments and temporal fluctuations of the habitat area. Root voles were sampled at nine sites to study the level of genetic variability and structure of local subpopulations by scoring 13 microsatellite loci in 69 individuals. Genetic differentiation varied amongst local populations and we did not find a significant isolation-by-distance pattern. Bayesian clustering analysis suggested that dispersal effectively prevents marked genetic subdivision between studied habitat fragments. Significant pairwise differentiation between some subpopulations, however, may be the result of putatively suppressed gene flow. Low genetic diversity in the recent populations probably reflects the isolated location of the study area in the agricultural landscape, suggesting that long-term survival may not be assured. In order to maintain genetic diversity, it is essential to preserve (or even restore) habitats and ensure the possibility of gene flow; habitat protection is, therefore, recommended. Continuous assessment is necessary for effective conservation management and to predict the long-term survival chances of the Pannonian root vole in the study area.
Keywords	Bayesian theory ; Microtus oeconomus ; agricultural landscapes ; gene flow ; genetic variation ; habitat conservation ; habitats ; microsatellite repeats ; Slovakia
Language	English
Dates of publication	2021-0507
Size	p. 167-191.
Publishing place	Pensoft Publishers
Document type	Article
ZDB-ID	2667603-5
ISSN	1314-3301
ISSN	1314-3301
DOI	10.3897/natureconservation.43.58798
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Nesting success and productivity of the Common Barn-owl Tyto alba

Bank László / Haraszthy László / Horváth Adrienn / Horváth Győző F.

Ornis Hungarica, Vol 27, Iss 1, Pp 1-

results from a nest box installation and long-term breeding monitoring program in Southern Hungary

2019 Volume 31

Abstract: In this study, the results of a long-term nest box installation program of the Common Barn-owl Tyto alba (Scopoli, 1769) in Southern Hungary were evaluated, which program was conducted during a 24-year period (1995–2018). The percentages of occupied nest ...

Abstract	In this study, the results of a long-term nest box installation program of the Common Barn-owl Tyto alba (Scopoli, 1769) in Southern Hungary were evaluated, which program was conducted during a 24-year period (1995–2018). The percentages of occupied nest boxes ranged from 9.72 to 73.44% in the first breeding periods while this varied between 0 and 41.46% in the case of repeated clutches in the same nest boxes with second broods. A total of 1,265 breeding attempts were recorded including 1,020 (80.63%) in the first and 245 (19.36%) in the second breeding periods, from which a total of 210 (16.6%) clutches did not produce any fledglings. The modal clutch size was 7 eggs in both first and second annual clutches. However, the value of productivity was higher in the case of larger clutch sizes and we found significant linear relationship between initial clutch size and fledgling production per nesting attempt in both breeding periods. Significant variation of reproductive parameters was observed among the years. The proportion of egg loss showed significant decline, while the change of hatching success and the variation of annual productivity showed significant slight positive linear trend during the 24 years. Our results suggested that despite the outlier values of reproduction characteristics in the extreme years with negative effect, a relatively stable Common Barn-owl population can be maintained by the placement of nest boxes in the investigated region.
Keywords	nest box occupancy ; clutch size ; eggs and hatching losses ; productivity ; Ecology ; QH540-549.5
Subject code	590
Language	English
Publishing date	2019-06-01T00:00:00Z
Publisher	Sciendo
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: First Results on the Presence of Mycotoxins in the Liver of Pregnant Fallow Deer (

Lakatos, István / Babarczi, Bianka / Molnár, Zsófia / Tóth, Arnold / Skoda, Gabriella / Horváth, Győző F / Horváth, Adrienn / Tóth, Dániel / Sükösd, Farkas / Szemethy, László / Szőke, Zsuzsanna

Animals : an open access journal from MDPI

2024 Volume 14, Issue 7

Abstract: Reproductive abnormalities have been observed in fallow deer populations in Hungary. We supposed mycotoxin contamination to be one of the possible causes because multi-mycotoxin contamination is known to be dangerous even at low toxin levels, especially ... ...

Abstract	Reproductive abnormalities have been observed in fallow deer populations in Hungary. We supposed mycotoxin contamination to be one of the possible causes because multi-mycotoxin contamination is known to be dangerous even at low toxin levels, especially for young animals. We investigated the spatial pattern of mycotoxin occurrences and the relationship between maternal and fetal mycotoxin levels. A total of 72 fallow deer embryos and their mothers were sampled in seven forested regions in Hungary in the 2020/2021 hunting season. We analyzed Aflatoxin (AF), Zearalenone (ZEA), Fumonizin B1 (FB1), DON, and T2-toxin concentrations in maternal and fetal livers by ELISA. AF was present in 70% and 82%, ZEA in 41% and 96%, DON in 90% and 98%, T2-toxin in 96% and 85%, and FB1 in 84% and 3% of hind and fetus livers, respectively. All mycotoxins passed into the fetus, but only Fumonizin B1 rarely passed. The individual variability of mycotoxin levels was extremely high, but the spatial differences were moderate. We could not prove a relation between the maternal and fetal mycotoxin concentrations, but we found an accumulation of ZEA and DON in the fetuses. These results reflect the possible threats of mycotoxins to the population dynamics and reproduction of wild fallow deer.
Language	English
Publishing date	2024-03-28
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2606558-7
ISSN	2076-2615
ISSN	2076-2615
DOI	10.3390/ani14071039
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Book ; Online: Ranking and benchmarking framework for sampling algorithms on synthetic data streams

Gáspár, József Dániel / Horváth, Martin / Horváth, Győző / Zvara, Zoltán

2020

Abstract: In the fields of big data, AI, and streaming processing, we work with large amounts of data from multiple sources. Due to memory and network limitations, we process data streams on distributed systems to alleviate computational and network loads. When ... ...

Abstract	In the fields of big data, AI, and streaming processing, we work with large amounts of data from multiple sources. Due to memory and network limitations, we process data streams on distributed systems to alleviate computational and network loads. When data streams with non-uniform distributions are processed, we often observe overloaded partitions due to the use of simple hash partitioning. To tackle this imbalance, we can use dynamic partitioning algorithms that require a sampling algorithm to precisely estimate the underlying distribution of the data stream. There is no standardized way to test these algorithms. We offer an extensible ranking framework with benchmark and hyperparameter optimization capabilities and supply our framework with a data generator that can handle concept drifts. Our work includes a generator for dynamic micro-bursts that we can apply to any data stream. We provide algorithms that react to concept drifts and compare those against the state-of-the-art algorithms using our framework.
Keywords	Computer Science - Distributed ; Parallel ; and Cluster Computing ; Computer Science - Artificial Intelligence
Subject code	006
Publishing date	2020-06-17
Publishing country	us
Document type	Book ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: Temporal Dynamics of Two Pathogenic Hantaviruses Among Rodents in Hungary

Madai, Mónika / Németh, Viktória / Oldal, Miklós / Horváth, Győző / Herczeg, Róbert / Kelemen, Krisztina / Kemenesi, Gábor / Jakab, Ferenc

Vector borne and zoonotic diseases. 2020 Mar. 01, v. 20, no. 3

2020

Abstract: Hantaviruses are worldwide pathogens, which often cause serious or even fatal diseases in humans. Hosts are predominantly in the form of rodents and soricomorphs; however, bats are also described as an important reservoir. In Hungary, representatives of ... ...

Abstract	Hantaviruses are worldwide pathogens, which often cause serious or even fatal diseases in humans. Hosts are predominantly in the form of rodents and soricomorphs; however, bats are also described as an important reservoir. In Hungary, representatives of two human pathogenic species of the genus Orthohantavirus are present: the Dobrava-Belgrade orthohantavirus and Puumala orthohantavirus. In Hungarian forests, the dominant rodent species are Apodemus flavicollis, Apodemus agrarius, Apodemus sylvaticus, and Myodes glareolus, all of which are natural reservoirs comprising different hantaviruses. The aim of the study was to survey the prevalence of hantaviruses among rodent populations and examine the potential relationship regarding population densities, years, sex, and seroprevalence. Rodents were trapped at 13 sampling plots in a forest reserve located in the Mecsek Mountain range, Hungary, from March to October between 2011 and 2014. Rodent serum samples were tested for IgG antibodies against Dobrava-Belgrade virus and Puumala virus by enzyme-linked immunosorbent assay (ELISA) using a recombinant nucleocapsid protein. During the 4-year sampling period, 2491 specimens were tested and 254 (10.2%) proved seropositive for orthohantaviruses. In 2011, the seroprevalence among Apodemus spp. and M. glareolus was 17.2% (114/661) and 3.9% (3/77), respectively, although this rate had reversed itself in 2014. Seropositivity was substantiated in 18.4% (12/65) of Myodes voles, while only 3.6% (13/359) of the tested Apodemus rodents were found to be IgG positive. Seroconversion was observed in 58 cases, while seroreversion was only detected in 3 individual cases. A significant difference among the number of infected males and females was identified in the first 2 years of our study. Winter survival with respect to rodents was not negatively affected due to the hantavirus infection. Hantavirus seroprevalence was not directly influenced by host abundance. Consequently, we assume that high rodent density alone does not lead to an increased risk of hantavirus infection among the rodent host population.
Keywords	Apodemus agrarius ; Apodemus flavicollis ; Apodemus sylvaticus ; Chiroptera ; Clethrionomys glareolus ; Myodes ; Puumala orthohantavirus ; antibodies ; blood serum ; enzyme-linked immunosorbent assay ; females ; forest reserves ; forests ; hosts ; humans ; immunoglobulin G ; males ; mountains ; nucleocapsid proteins ; overwintering ; pathogens ; population density ; risk ; seroconversion ; seroprevalence ; surveys ; temporal variation ; voles ; Hungary
Language	English
Dates of publication	2020-0301
Size	p. 212-221.
Publishing place	Mary Ann Liebert, Inc.
Document type	Article
ZDB-ID	2047199-3
ISSN	1557-7759 ; 1530-3667
ISSN (online)	1557-7759
ISSN	1530-3667
DOI	10.1089/vbz.2019.2438
Database	NAL-Catalogue (AGRICOLA)

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