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001-es BibID:BIBFORM086279
035-os BibID:(cikkazonosító)jeb219659
Első szerző:Rádai Zoltán (biológus)
Cím:Consequences of rapid development owing to cohort splitting: just how costly is it to hurry? / Zoltán Rádai, Johanna Kiss, Agnieszka Babczyńska, Gábor Kardos, Ferenc Báthori, Ferenc Samu, Zoltán Barta
Dátum:2020
ISSN:0022-0949
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Journal Of Experimental Biology. - 223 : 6 (2020), p. 1-15. -
További szerzők:Kiss Johanna (1989-) (zoológus) Babczyńska, Agnieszka Kardos Gábor (1974-) (szakorvos, klinikai mikrobiológus) Báthori Ferenc (1988-) (biológus) Samu Ferenc (ökológus) Barta Zoltán (1967-) (biológus, zoológus)
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2.

001-es BibID:BIBFORM107663
035-os BibID:(WOS)000397620100028 (Scopus)85016594854 (PUBMED)28183869
Első szerző:Ramenofsky, Marilyn
Cím:Behavioral and physiological traits of migrant and resident white-crowned sparrows: a common garden approach / Marilyn Ramenofsky, Andrew W. Campion , Jonathan H. Pérez, Jesse S. Krause, Zoltán Németh
Dátum:2017
ISSN:0022-0949
Megjegyzések:To accommodate a migratory life history, migrants express a greater number of physiological and behavioral stages per annum than residents and are thus considered to have higher finite state diversity (FSD). To investigate the physiological mechanisms and constraints associated with migration, direct comparison of two subspecies of white-crowned sparrow - migrant, Zonotrichia leucophrys gambelii, and resident, Z. l. nuttalli - were made under common garden conditions of photoperiod and housing, as birds progressed from winter through the vernal life history stages. We tested the hypothesis that migrants (higher FSD) respond differently than residents (lower FSD) to the initial predictive cue, photoperiod, to initiate and integrate the progression of vernal stages of prenuptial molt, migration and development of breeding. If differences in vernal phenology were noted, then the basis for the distinctions was considered genetic. Results indicate that (1) residents had a lower threshold to vernal photoperiod with elevations of plasma androgen, growth and development of reproductive structures preceding those of migrants; (2) only migrants displayed prenuptial molt, preparations for migration and migratory restlessness; and (3) neither baseline nor stress-induced plasma corticosterone differed across subspecies, suggesting energetic demands of the common garden were insufficient to induce a differential adrenocortical response in either subspecies, highlighting the impact of environmental conditions on corticosterone secretion. Thus, in a common garden experiment, Z. l. gambelii responds differently to the initial predictive cue, photoperiod, to initiate and execute the vernal stages of molt, migration and development of breeding in comparison to the shared stage of breeding with Z. l. nuttalli, confirming a genetic basis for the subspecies differences
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Finite state diversity
Flight muscle hypertrophy
Migratory restlessness
Prenuptial molt
Androgens
Corticosterone
Megjelenés:Journal Of Experimental Biology. - 220 : 7 (2017), p. 1330-1340. -
További szerzők:Campion, Andrew W. Pérez, Jonathan H. Krause, Jesse S. Németh Zoltán (1976-) (biológus)
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Intézményi repozitóriumban (DEA) tárolt változat
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3.

001-es BibID:BIBFORM103456
035-os BibID:(Wos)000455886700003 (Scopus)85059917864 (Cikkazonosító)jeb183517
Első szerző:Vincze Orsolya (biológus)
Cím:Wing morphology, flight type and migration distance predict accumulated fuel load in birds / Orsolya Vincze, Csongor I. Vágási, Péter László Pap, Colin Palmer, Anders Pape Moller
Dátum:2019
ISSN:0022-0949
Megjegyzések:Birds often accumulate large fat and protein reserves to fuel long-distance flights. While it is well known that species that fly the longest accumulate the largest amounts of fuel, considerable cross-species variation in fuel load is seen after controlling for overall migration distance. It remains unclear whether this variation can be explained by aerodynamic attributes of different species, despite obvious ecological and conservation implications. Here, we collected data on wing morphology, flight type, migration distance and fuel load from 213 European bird species and explored three questions: (1) does maximum fuel load relate to migration distance across species?; (2) does wing morphology, as described by wing aspect ratio and wing loading, influence maximum fuel load?; and (3) does flight type influence maximum fuel load? Our results indicate that maximum fuel load increases with migration across species, but residual variance is high. The latter variance is explained by aspect ratio and flight type, while wing loading and body mass explain little variance. Birds with slender wings accumulate less fuel than species with low wing aspect ratio when covering a similar migration distance. Continuously flapping species accumulate the largest amounts of fuel, followed by flapping and soaring species and flapping and gliding species, while the smallest fuel loads were observed in birds with passerine-type flight. These results highlight complex eco-evolutionary adaptations to migratory behaviour, pointing toward the importance of energy minimisation.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Aspect ratio
Fat reserves
Flight range
Flapping
Gliding
Soaring
Wing loading
Megjelenés:Journal Of Experimental Biology. - 222 : 1 (2019), p. 1-7. -
További szerzők:Vágási Csongor István Pap Péter László (ökológus) Palmer, Colin Møller, Anders P.
Pályázati támogatás:NTP-EFOP-15-0043
Egyéb
PD 121166
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