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001-es BibID:BIBFORM077160
Első szerző:Nagy Jenő (biológus)
Cím:Phylogeny, migration and life history: filling the gaps in the origin and biogeography of the Turdus thrushes / Nagy Jenő, Végvári Zsolt, Varga Zoltán
Dátum:2019
ISSN:0021-8375 2193-7206
Megjegyzések:Although the biogeographic history of thrushes (Turdidae) has been extensively studied, a concise discussion of this topic is still lacking. Therefore, in this study we aimed to investigate: (1) the evolutionary origin of the migratory behaviour of the Turdus thrushes in a biogeographic context including (2) trans-Atlantic dispersal events, (3) possible colonization routes into the Nearctic, and (4) relationships among life history traits, ecological factors, and migratory strategies within the most comprehensive taxon set of 72 Turdus thrushes to date. We estimated the ancestral ranges of the studied species, primarily by comparing main biogeographic models (dispersal-vicariance, dispersal-extinction-cladogenesis, BayArea models), and performed phylogenetic generalized least squares analyses to identify relationships among distribution patterns, diet, body measurements, clutch size, and migratory behaviour. We found that the most probable ancestral regions for all Turdus species were located in the East Palearctic realm, followed by early colonization of the western Palearctic and Africa, and that several trans-Atlantic movements occurred between 11 and 4 million years ago, which is earlier than previously thought. Migration emerged as an ancestral behaviour of the genus Turdus, and differences in clutch size and main food types were significant between migratory and non-migratory species. Correlated evolution was found between migration and along-latitudinal mobility, main food type, and the shift in main food type between the seasons. We conclude that along-latitudinal movements may have evolved earlier, simultaneously with the radiation of the Turdus thrushes, followed by the appearance of meridional migration, associated with orographic and climatic changes. The increased clutch sizes observed in migratory species and documented here for thrushes could serve as an important mechanism to compensate for losses due to mortality during migration.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
clutch size
comparative phylogeny
evolution
Foraging strategies
migratory behaviour
Turdidae
Megjelenés:Journal of Ornithology. - 160 (2019), p. 1-15. -
További szerzők:Végvári Zsolt (1969-) (biológus) Varga Zoltán (1939-) (professor emeritus, evolúcióbiológus, zoológus)
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2.

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
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3.

001-es BibID:BIBFORM059318
Első szerző:Végvári Zsolt (biológus)
Cím:Life-history traits and climatic responsiveness in noctuid moths / Zsolt Végvári, Edit Juhász, János Pál Tóth, Zoltán Barta, Sándor Boldogh, Sándor Szabó, Zoltán Varga
Dátum:2015
ISSN:0030-1299
Megjegyzések:Emergence phenology has been shown to advance considerably in the past decades in many lepidopterans. Noctuid moths (Noctuidae) constitute a species-rich family of lepidopterans with a large diversity of life history traits presumably driving climatic responsiveness. In our study we aim to assess the role of life-history and ecological traits in climatic responsiveness of noctuid moths, whilst controlling for phylogenetic dependence. We used a long-term dataset of European noctuid moths collected from a light-trap in northeastern Hungary. As the study site is located at the intersection of several biogeographical zones harbouring a large number of noctuid moth species, our dataset provides a unique possibility to investigate the moths' climatic sensitivity. To estimate the role of life-history traits and ecological factors in driving lepidopterans' response to climatic trends, we employed three proxies related to the species' ecology (habitat affinity, food plant specialization and food type) and two robust types of life-history traits (migration strategy and hibernation form). The degree of temporal shifts of various measures of emergence phenology was related to hibernation stage, food type and migration strategy. Large-scale phylogenetic relatedness exerted little constraint in all models fitted on each measure of phenology. Our results imply that noctuid moths overwintering as adults exhibited greater degrees of phenological shifts than species hibernating as larvae or pupae. It implies that moths hibernating as adults are forced to suspend activity in our climate and the prolongation of autumn activity might be the result of increased plasticity in flight periods.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Élettudományok - Biológiai tudományok
Megjelenés:Oikos. - 124 : 2 (2015), p. 235-242. -
További szerzők:Juhász Edit Tóth János Pál (1981-) Barta Zoltán (1967-) (biológus, zoológus) Boldogh Sándor Szabó Sándor Varga Zoltán (1939-) (professor emeritus, evolúcióbiológus, zoológus)
Pályázati támogatás:MTA-DE Lendület
MTA
Viselkedésökológiai Kutatócsoport
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