Breaking down seasonality: Androgen modulation and stress response in a highly stable environment

Highlights • Under extremely stable climatic conditions, seasonality of breeding and molting are lost. • Birds breed and molt year-round. • Testosterone was not related to breeding condition and did not vary across the year. • Stress-induced levels of CORT were suppressed even in birds not molting....

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Veröffentlicht in:	General and comparative endocrinology 2013-09, Vol.191, p.1-12
Hauptverfasser:	González-Gómez, Paulina L, Merrill, Loren, Ellis, Vincenzo A, Venegas, Cristobal, Pantoja, Javiera I, Vasquez, Rodrigo A, Wingfield, John C
Format:	Artikel
Sprache:	eng
Schlagworte:	Animals birds Breeding Corticosterone Corticosterone - metabolism Desert developmental stages Ecosystem Endocrine mechanisms Endocrinology & Metabolism Female habitats Male Molting Passeriformes Sparrows - metabolism Sparrows - physiology Stable environments stress response temperate zones temperature Testosterone Testosterone - metabolism Zonotrichia
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Beschreibung
Zusammenfassung:	Highlights • Under extremely stable climatic conditions, seasonality of breeding and molting are lost. • Birds breed and molt year-round. • Testosterone was not related to breeding condition and did not vary across the year. • Stress-induced levels of CORT were suppressed even in birds not molting. • Long-term extremely stable conditions could relax the timing of life history stages.
ISSN:	0016-6480 1095-6840
DOI:	10.1016/j.ygcen.2013.05.007