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001-es BibID:BIBFORM061801
Első szerző:Ács Zoltán
Cím:Phylogenetic patterns of a nightingale population in a contact zone of Luscinia megarhynchos and L. luscinia in Hungary / Zoltán Ács, Dávid Kováts
Dátum:2013
ISSN:1584-9074 1843-5629
Megjegyzések:Phylogenetic patterns of two closely related nightingale species the Luscinia megarhynchos and the L.luscinia were investigated in north-eastern part of Hungary. The mitochondrial cytochrome-c oxidase subunitI (COI) gene amplified by polymerase chain reaction (PCR) and sequenced directly to set up theirphylogenetic relationships. In eastern Hungary (Szatmár-Beregi Landscape Protected Area, Vámosatya, Bockerek forest 48(degree)11'N, 22(degree)23'E), a new haplotype of L. luscinia is discovered. Based on our molecular result, however, no individual of L. luscinia was found in the Upper-Tisza Region (especially between Tiszabercel and Tiszatelek), where its old breeding stands formerly occurred. It suggests its population might extinctfrom this region, or partially shifted to undisturbed territories, probably due to ecological impoverishment offloodplain forest associations. Furthermore, it appears that range expansion of L. megarhynchos increased inthose of fragmented habitats.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
distribution
new haplotype
habitat requirements
habitat loss
interspecific competition
climate change
Megjelenés:North-Western Journal of Zoology. - 9 : 2 (2013), p. 365-373. -
További szerzők:Kováts Dávid (1979-) (környezetgazdálkodási agrármérnök)
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2.

001-es BibID:BIBFORM118012
035-os BibID:(Scopus)85132531492 (WoS)000814087800010 (cikkazonosító)e221503
Első szerző:Gál Zoltán (ökológus)
Cím:Exploration of a hybrid zone between two toad species in Central Europe`s Carpathian region with a new molecular marker / Zoltán Gál, Tibor Kovács, János Ujszegi, Brandon P. Anthony, Balázs Vági Orsolya I.Hoffmann
Dátum:2024
ISSN:1584-9074 1843-5629
Megjegyzések:Analyzing hybrid zones allows insight into interactions between previously isolated lineages. The distributions of firebellied toads (Bombina bombina) and yellow-bellied toads (B. variegata) meet in the Carpathian Basin. We aimed to explore the genetic composition of a transient zone between the two sister species along a transect in the Carpathian foothill region. We collected 230 specimens from 21 locations and sampled them using buccal swabs. We used mitochondrial markers and designed a novel test based on the restriction of the nuclear Ncx-1 gene to distinguish between the two species and determine hybrid individuals. According to our results, the complete Börzsöny Hills and many locations in Krupinská Planina were colonized by B. bombina, including typical B. variegata habitats at higher elevations. However, in Krupinská Planina, the most remote sites still harbor B. variegata populations, often mixed with hybrid individuals. This pattern may indicate the northward and altitudinal range expansion of B. bombina. Our results warrant enhanced attention to hybrid zones, where introgression and other changes in the populations` genetic composition may reflect recent rapid environmental alterations.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Bombina bombina
Bombina variegata
contact zone
distribution mapping
introgression
Megjelenés:North-western Journal of Zoology. - 18 : 1 (2024), p. 51-57. -
További szerzők:Kovács Tibor Ujszegi János (ökológus) Brandon P. Anthony Vági Balázs (1984-) (biológus, herpetológus) Hoffman Orsolya Ivett
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3.

001-es BibID:BIBFORM083824
035-os BibID:(cikkazonosító)e181102
Első szerző:Szanyi Szabolcs (biológus, ökológus)
Cím:Flower visiting preferences of bumblebees (Apidae: Bombus spp.) in grasslands of the Velyka Dobron' Game Reserve (Transcarpathia, Ukraine) / Szabolcs Szanyi, Anikó Kovács-Hostyánszki, Zoltán Varga, Antal Nagy
Dátum:2020
ISSN:1584-9074 1843-5629
Megjegyzések:Frequency of flower visitations of six bumble bee (Bombus) species was surveyed in Transcarpathia (Ukraine). In four areas of the Game Reserve of Nagydobrony and surroundings five-five sampling quadrates were designated. The frequency of flower visitations of 16 dominant plant species (7 spp. in Fabaceae, 3 spp. in Asteraceae, 3 spp. in Lamiaceae, and 3 species from other families) were registered in four repetitions in mid-summer. The most frequent large bumble bee species, B. terrestris, exploited the widest spectrum of flower sources, with insignificant preference for Lotus corniculatus, Prunella vulgaris and Lythrum salicaria. The flower visitation of B. lapidarius was characterised by the high frequency of L. salicaria and Medicago sativa. The small bumble bee species, B. pascuorum, B. sylvarum and B. humilis, also showed significantly different preferences. Generally, the three most frequently visited plant species belonged to Fabaceae, followed by Symphytum officinale (Boraginaceae). We did not observe any significant difference between large vs. small bumble bees, either concerning the nectar source families or in length and shape of the visited flower corollas. Significant influence of flower colours, both as they are experienced by bumble bees (blue, bluish-green) and according to the visible colours (purple), was found on the flower visitation by nearly all bumble bee species. Since practically all species have shown somewhat different preferences for nectar sources, we could not observe any genuine communities of bumble bees; however, accidental feeding assemblages can exist based on high preferences of species in Fabaceae.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
colour preferences
corolla length
Fabaceae
large and small species
Megjelenés:North-Western Journal of Zoology. - 16 : 1 (2020), p. 21-28. -
További szerzők:Kovács-Hostyánszki Anikó Varga Zoltán (1939-) (professor emeritus, evolúcióbiológus, zoológus) Nagy Antal (1976-) (biológus)
Pályázati támogatás:TÁMOP-4.2.4.A/ 2-11/1-2012-0001
TÁMOP
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