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001-es BibID:	BIBFORM067599
Első szerző:	Nagy Jenő (biológus)
Cím:	Life history traits, bio-climate and migratory systems of accipitrid birds of prey (Aves: Accipitriformes) / Jenő Nagy, Zsolt Végvári, Zoltán Varga
Dátum:	2017
ISSN:	0024-4066
Megjegyzések:	Although migration is a widespread phenomenon across a range of taxa, the evolution of migratory behaviour remains insufficiently understood. Therefore, the aim of this study was to examine the relationships between migratory behaviour and life history traits of diurnal birds of prey (Accipitriformes) in a phylogenetic context and also to investigate the bioclimatic suitability of geographical ranges for migratory raptors. We performed phylogenetic generalized least square analysis, using a previously published phylogenetic tree of 179 accipitrid raptors, to identify relationships among distribution patterns, diet, hunting strategies, body measurements, clutch size, and migratory behaviour. Bioclimatic data were employed into computer learning maximum entropy modelling (Maxent) to specify differences between climatic conditions on breeding and wintering grounds. Clutch size and hunting strategies have been proved to be the most important variables in shaping distribution areas, and also the geographic dissimilarities may mask important relationships between life history traits and migratory behaviours. However, this result supports the need for distinctions among the three major migratory routes in raptors. Indeed, the West Palearctic-Afrotropical and the North-South American migratory systems are fundamentally different from the East Palearctic-Indomalayan system, owing to the presence versus absence of ecological barriers. This suggests that the migratory behaviours differ among the three main migratory routes for these species. Future studies could uncover the causes of differences among the three main flyways in more detail.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban biogeography clutch size comparative phylogenetic methods ecology barriers habitat hunting strategies maximum entropy modelling raptors
Megjelenés:	Biological Journal of the Linnean Society. - 121 : 1 (2017), p. 63-71. -
További szerzők:	Végvári Zsolt (1969-) (biológus) Varga Zoltán (1939-) (professor emeritus, evolúcióbiológus, zoológus)
Pályázati támogatás:	NTP-EFÖ-P-15-A-0495 Egyéb
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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001-es BibID:	BIBFORM018936
Első szerző:	Pecsenye Katalin (biológus)
Cím:	Genetic differentiation among the Maculinea species (Lepidoptera: Lycaenidae) in eastern Central Europe / Pecsenye Katalin, Bereczki Judit, Tihanyi Borbála, Tóth Andrea, Peregovits László, Varga Zoltán
Dátum:	2007
Megjegyzések:	The present study aimed to analyse the level of genetic variation in the eastern Central European (Slovenia, Hungary, and Romania/Transylvania) populations of the Large Blues (Maculinea) to analyse the pattern of differentiation both between and within the species. One objective was to compare the level of differentiation between the two disputed species (Maculinea alcon and Maculinea rebeli) with that among the other species. Imagos were collected from 23 localities in eastern Central Europe in 2002. Enzyme polymorphism was analysed using polyacrylamide gel electrophoresis. Fourteen enzyme loci were studied in all samples. In the analysis of the data, F-statistics and Nei's genetic distances were calculated and a dendrogram (unweighted pair group method with arithmetic mean) was constructed on the basis of the distance matrix. A multivariate analysis of variance was performed to study the pattern of genetic differentiation among the samples. Principal component analysis analysis was also carried out using the allele frequency data of the samples. Our results indicated that the large blues are generally less polymorphic than other European lycaenid butterflies studied. At the same time, the level of genetic differentiation was high, even among local populations within the species. A low level of genetic variation within the populations coupled with strong differentiation among them implies the effect of genetic drift. Strong genetic differentiation of four Maculinea species (M. alcon, Maculinea teleius, Maculinea nausithous, and Maculinea arion) was confirmed. Significant differentiation was not found between M. alcon and M. rebeli.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban allozyme polymorphism Maculinea alcon Maculinea arion Maculinea nausithous Maculinea rebeli Maculinea teleius structure of genetic variation
Megjelenés:	Biological Journal of the Linnean Society. - 91 : 1 (2007), p. 11-21. -
További szerzők:	Bereczki Judit (1979-) (biológus) Tihanyi Borbála Tóth Andrea Peregovits László Varga Zoltán (1939-) (professor emeritus, evolúcióbiológus, zoológus)
Internet cím:	Intézményi repozitóriumban (DEA) tárolt változat DOI
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001-es BibID:	BIBFORM019185
Első szerző:	Varga Zoltán (professor emeritus, evolúcióbiológus, zoológus)
Cím:	Types of oreal and oreotundral disjunctions in the western Palearctic / Zoltan S. Varga, Thomas Schmitt
Dátum:	2008
ISSN:	0024-4066
Megjegyzések:	The cyclic changes of the Pleistocene between cold and warm periods resulted in antagonistic responses within two different groups of organisms: one expanding during the warm periods and retracting during the cold phases and another with opposed responses. The latter group is composed of so-called arctic and alpine species. These species have recently become the focus of phylogeographical research. However, we still lack a comprehensive characterization of the different types of alpine and arctic-alpine disjunctions in the western Palearctic. Such an overview might facilitate the selection of different model species to test the different patterns of disjunctions for congruences revealing their past distribution. Therefore, we list all alpine and arctic-alpine disjunction types of the western Palearctic using butterflies and moths as a model group. We distinguish between (1) endemics of the Alps (a) with strongly restricted and (b) with broader distributions; (2) alpine disjunct species (a) with perialpine disjunctions and (b) with a wide western Palearctic distribution; (3) oro-Mediterranean species; and (4) arctic-alpine disjunct species. These types of distributions and further subtypes are exemplified using chorological data of butterfly and moth species. In this context, we discuss the intraspecific differentiation and the differentiation among siblingspecies within and among disjunct parts of the distribution area. We also formulate hypotheses of the distribution patterns during the last ice age which might best explain the actual patterns. Finally, we suggest some case studies of genetic analyses to test the above mentioned hypotheses.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban arctic regions biogeography butterflies chorology endemisms lepidoptera moths mountain regions phylogeography
Megjelenés:	Biological Journal of the Linnean Society. - 93 (2008), p. 415-430. -
További szerzők:	Schmitt, Thomas
Internet cím:	Intézményi repozitóriumban (DEA) tárolt változat
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