CCL

Összesen 3 találat.
#/oldal:
Részletezés:
Rendezés:

1.

001-es BibID:BIBFORM021579
Első szerző:Barta Zoltán (biológus, zoológus)
Cím:Annual routines of non-migratory birds : optimal moult strategies / Zoltán Barta, Alasdair I. Houston, John M. McNamara, Robert K. Welham, Anders Hedenström, Thomas P. Weber, Orsolya Feró
Dátum:2006
ISSN:0030-1299
Megjegyzések:In a periodically changing environment it is important for animals to properly time the major events of their life in order to maximise their lifetime fitness. For a non-migratory bird the timing of breeding and moult are thought to be the most crucial. We develop a state-dependent optimal annual routine model that incorporates explicit density dependence in the food supply. In the model the birds' decisions depend on the time of year, their energy reserves, breeding status, experience, and the quality of two types of feathers (outer and inner primaries). Our model predicts that, under a seasonal environment, feathers with large effects on flight ability, higher abrasion rate and lower energetic cost of moult should be moulted closer to the winter (i.e. later) than those with the opposite attributes. Therefore, we argue that the sequence of moult may be an adaptive response to the problem of optimal timing of moult of differing feathers within the same feather tract. The model also predicts that environmental seasonality greatly affects optimal annual routines. Under high seasonality birds breed first then immediately moult, whereas under low seasonality an alternation occurs between breeding and moulting some of the feathers in one year and having a complete moult but no breeding in the other year. Increasing food abundance has a similar effect.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Oikos. - 112 (2006), p. 580-593. -
További szerzők:Houston, Alasdair I. McNamara, John M. Welham, Robert K. Hedenström, Anders Weber, Thomas P. Feró Orsolya
Internet cím:Intézményi repozitóriumban (DEA) tárolt változat
DOI
Borító:

2.

001-es BibID:BIBFORM013708
Első szerző:Tökölyi Jácint (biológus)
Cím:Breeding phenology determines evolutionary transitions in migratory behaviour in finches and allies / Jácint Tökölyi, Zoltán Barta
Dátum:2011
ISSN:0030-1299
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Oikos. - 120 : 2 (2011), p. 184-193. -
További szerzők:Barta Zoltán (1967-) (biológus, zoológus)
Internet cím:Intézményi repozitóriumban (DEA) tárolt változat
DOI
Borító:

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
Internet cím:Szerző által megadott URL
DOI
Intézményi repozitóriumban (DEA) tárolt változat
Borító:
Rekordok letöltése1