Seasonal changes in courtship behavior, plasma androgen levels and in hypothalamic aromatase immunoreactivity in male free-living European starlings ( Sturnus vulgaris )

Research highlights ► In male starlings, singing in spring is associated with wing-waving/flicking. ► Testosterone levels and aromatase immunoreactivity change parallel with singing. ► Vocalization without wing-waving/flicking characterize the non-breeding season. ► Testosterone and dehydroepiandros...

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Veröffentlicht in:	General and comparative endocrinology 2011-05, Vol.172 (1), p.151-157
Hauptverfasser:	Pintér, Ottó, Péczely, Péter, Zsebők, Sándor, Zelena, Dóra
Format:	Artikel
Sprache:	eng
Schlagworte:	Aggression Aggressive behavior Androgens Androgens - blood Animal Husbandry Animals Animals, Wild Aromatase Aromatase - metabolism Behavior, Animal - physiology Brain breeding season chicks cohesion Courtship Courtship behavior Dehydroepiandrosterone Dehydroepiandrosterone - blood Dominance Endocrinology & Metabolism European starling Female flocks Free-living hatching Hypothalamus Hypothalamus - metabolism Immunohistochemistry Immunoreactivity latitude Male males medial preoptic nucleus nesting Pair bond prasterone Preoptic area seasonal variation Seasonal variations Seasons Sexual behavior Song songbirds spring Starlings - blood Starlings - metabolism Starlings - physiology Sturnus vulgaris Testosterone Testosterone - blood unspecific monooxygenase vocalization Vocalization behavior
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Zusammenfassung:	Research highlights ► In male starlings, singing in spring is associated with wing-waving/flicking. ► Testosterone levels and aromatase immunoreactivity change parallel with singing. ► Vocalization without wing-waving/flicking characterize the non-breeding season. ► Testosterone and dehydroepiandrosterone levels are low in the non-breeding season. ► Androgens are not the exclusive regulators of courtship and non-courtship behavior.
ISSN:	0016-6480 1095-6840
DOI:	10.1016/j.ygcen.2011.02.002