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001-es BibID:	BIBFORM081449
035-os BibID:	(cikkazonosító)20150272 (PMID)26179799
Első szerző:	Lendvai Ádám Zoltán (biológus)
Cím:	Within-individual plasticity explains age-related decrease in stress response in a short-lived bird / Ádám Z. Lendvai, Mathieu Giraudeau, Veronika Bókony, Frédéric Angelier, Olivier Chastel
Dátum:	2015
ISSN:	1744-9561
Megjegyzések:	A crucial problem for every organism is how to allocate energy between competing life-history components. The optimal allocation decision is often state-dependent and mediated by hormones. Here, we investigated how age, a major state variable affects individuals' hormonal response to a standardized stressor: a trait that may reflect allocation between self-maintenance and reproduction. We caught free-living house sparrows and measured their hormonal (corticosterone) response to capture stress in consecutive years. Using a long-term ringing dataset, we determined the age of the birds, and we partitioned the variation into within- and among-individual age components to investigate the effects of plasticity versus selection or gene flow, respectively, on the stress response. We found large among-individual variation in the birds' hormone profiles, but overall, birds responded less strongly to capture stress as they grew older. These results suggest that stress responsiveness is a plastic trait that may vary within individuals in an adaptive manner, and natural selection may act on the reaction norms producing optimal phenotypic response in the actual environment and life-history stage.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk corticosterone stress response plasticity
Megjelenés:	Biology Letters. - 11 : 7 (2015), p. 1-4. -
További szerzők:	Giraudeau, Mathieu Bókony Veronika (alkalmazott zoológus) Angelier, Frédéric Chastel, Olivier
Pályázati támogatás:	OTKA PD76862 OTKA OTKA K113108 OTKA
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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