PMID: 3770653Sep 1, 1986Paper

Behavioral and endocrine correlates of multiple brooding in the semicolonial house sparrow Passer domesticus. I. Males

Hormones and Behavior
R E Hegner, J C Wingfield

Abstract

Behavioral and endocrine changes associated with reproductive events were studied in free-living male house sparrows (Passer domesticus). Circulating levels of luteinizing hormone (LH), testosterone (T), and dihydrotestosterone (DHT) were maximal during egg-laying and declined during incubation and the first 2/3 of the nestling stage. As the young approached fledging, levels of LH and T rose to levels similar to those of the first egg-laying stage. This pattern was repeated three to five times during the prolonged breeding season of this species. Multivariate statistical analysis demonstrated that elevated levels of LH and androgens during egg-laying stages were associated with high rates of intrusion at nests by conspecifics, especially other adult males, and elevated levels of agonistic activity, nest defense, and mate-guarding behavior by breeding males. Feeding rates of males declined significantly as plasma levels of T began to rise. Concentrations of corticosterone (B) were high during each egg-laying and nestling stage and were correlated with high or rising levels of reproductive hormones. This suggests that reproductive activity, while energetically demanding, was not overly stressful to these birds. Body mass and fat ...Continue Reading

References

Jan 1, 1974·Behaviour·J Altmann
Jun 1, 1973·The Journal of Clinical Endocrinology and Metabolism·L ShenkmanC S Hollander
Feb 1, 1972·The Journal of Endocrinology·B K FollettF J Cunningham
Jul 1, 1983·Journal of Steroid Biochemistry·E Haase
Nov 1, 1981·Biology of Reproduction·T R Akesson, D G Raveling

❮ Previous
Next ❯

Citations

Mar 22, 2005·Hormones and Behavior·L Z GaramszegiA P Møller
Feb 28, 2003·General and Comparative Endocrinology·Maria Elena Pereyra, John C Wingfield
Jul 28, 1999·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·M RamenofskyM R Greenwood
Feb 24, 2016·General and Comparative Endocrinology·Nora H PriorKiran K Soma
Aug 29, 2009·Journal of Chemical Neuroanatomy·Gregory F Ball, Jacques Balthazart
Jan 1, 1989·General and Comparative Endocrinology·S A MyersM E el Halawani
Oct 7, 2004·Hormones and Behavior·Kristin A KochJohn D Buntin
Apr 15, 2014·Hormones and Behavior·Scott Davies, Pierre Deviche
Aug 30, 2008·The American Naturalist·L Z GaramszegiJ C Wingfield
Nov 17, 2006·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·W A ButtemerL B Astheimer
Apr 1, 1989·General and Comparative Endocrinology·T Meijer, H Schwabl
Jan 23, 2018·Journal of Experimental Zoology. Part A, Ecological and Integrative Physiology·Katie B NeedhamTimothy J Greives
Sep 17, 2019·Hormones and Behavior·John C WingfieldGregory F Ball
Mar 30, 2021·The Journal of Experimental Biology·Haley E HansonLynn B Martin
Nov 17, 2009·The Journal of Experimental Biology·K S Henry, J R Lucas
Feb 4, 2006·General and Comparative Endocrinology·Silke S SteigerBart Kempenaers

❮ Previous
Next ❯

Related Concepts

Related Feeds

BRAIN Initiative Cell Census Network (BICCN)

The BRAIN Initiative Cell Census Network aims to identify and provide experimental access to the different brain cell types to determine their roles in health and disease. Discover the latest research from researchers in the BRAIN Initiative Cell Census Network here.