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001-es BibID:	BIBFORM042009
035-os BibID:	(cikkazonosító)e40651
Első szerző:	Vágási Csongor István
Cím:	Haste makes waste but condition matters : Molt rate-feather quality trade-off in a sedentary songbird / Csongor I. Vágási, Péter L. Pap, Orsolya Vincze, Zoltán Benkő, Attila Marton, Zoltán Barta
Dátum:	2012
ISSN:	1932-6203
Megjegyzések:	AbstractBackground: The trade-off between current and residual reproductive values is central to life history theory, although thepossible mechanisms underlying this trade-off are largely unknown. The ♭molt constraint' hypothesis suggests that molt andplumage functionality are compromised by the preceding breeding event, yet this candidate mechanism remainsinsufficiently explored.Methodology/Principal Findings: The seasonal change in photoperiod was manipulated to accelerate the molt rate. Thistreatment simulates the case of naturally late-breeding birds. House sparrows Passer domesticus experiencing acceleratedmolt developed shorter flight feathers with more fault bars and body feathers with supposedly lower insulation capacity (i.e.shorter, smaller, with a higher barbule density and fewer plumulaceous barbs). However, the wing, tail and primary featherlengths were shorter in fast-molting birds if they had an inferior body condition, which has been largely overlooked inprevious studies. The rachis width of flight feathers was not affected by the treatment, but it was still condition-dependent.Conclusions/Significance: This study shows that sedentary birds might face evolutionary costs because of the molt rate?feather quality conflict. This is the first study to experimentally demonstrate that (1) molt rate affects several aspects of bodyfeathers as well as flight feathers and (2) the costly effects of rapid molt are condition-specific. We conclude that molt rateand its association with feather quality might be a major mediator of life history trade-offs. Our findings also suggest a noveladvantage of early breeding, i.e. the facilitation of slower molt and the condition-dependent regulation of feather growth.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban Élettudományok - Biológiai tudományok
Megjelenés:	PLoS ONE. - 7 : 7 (2012), p. 1-9. -
További szerzők:	Pap Péter László (ökológus) Vincze Orsolya (1988-) (biológus) Benkő Zoltán Marton Attila (1990-) (biológus) Barta Zoltán (1967-) (biológus, zoológus)
Pályázati támogatás:	MTA-DE Lendület MTA Viselkedésökológiai Kutatócsoport
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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