Breeding on the extreme edge: modulation of the adrenocortical response to acute stress in two High Arctic passerines

Journal of Experimental Zoology. Part A, Ecological Genetics and Physiology
Brian G WalkerJohn C Wingfield

Abstract

Arctic weather in spring is unpredictable and can also be extreme, so Arctic-breeding birds must be flexible in their breeding to deal with such variability. Unpredictability in weather conditions will only intensify with climate change and this in turn could affect reproductive capability of migratory birds. Adjustments to coping strategies are therefore crucial, so here we examined the plasticity of the adrenocorticotropic stress response in two Arctic songbird species-the snow bunting (Plectrophenax nivalis) and Lapland longspur (Calcarius lapponicus)-breeding in northwest Greenland. Across the breeding season, the stress response was strongest at arrival and least robust during molt in male snow buntings. Snow bunting females had higher baseline but similar stress-induced corticosterone levels compared to males. Modification of the stress response was not due to adrenal insensitivity, but likely regulated at the anterior pituitary gland. Compared to independent nestlings and adult snow buntings, parental-dependent chicks had a more robust stress response. For Lapland longspurs, baseline corticosterone was highest at arrival in both male and females, and arriving males displayed a higher stress response compared to arriving ...Continue Reading

References

Dec 1, 1995·Hormones and Behavior·L B AstheimerJ C Wingfield
Feb 1, 1997·Comparative Biochemistry and Physiology. Part C, Pharmacology, Toxicology & Endocrinology·L M RomeroJ C Wingfield
May 6, 1998·Comparative Biochemistry and Physiology. Part C, Pharmacology, Toxicology & Endocrinology·L M Romero, J C Wingfield
Jun 5, 1998·The American Journal of Physiology·L M RomeroJ C Wingfield
Aug 26, 1998·Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology·L M RomeroJ C Wingfield
Apr 8, 2000·General and Comparative Endocrinology·L M RomeroJ C Wingfield
May 9, 2002·Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology·John C Wingfield, Kathleen E Hunt
Jul 19, 2002·Proceedings. Biological Sciences·E PostT V Callaghan
Sep 25, 2002·General and Comparative Endocrinology·L Michael Romero
Jul 2, 2003·Journal of Neuroendocrinology·J C Wingfield, R M Sapolsky
Jan 25, 2005·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·L Michael Romero, J Michael Reed
Aug 30, 2005·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·L Michael RomeroJohn C Wingfield
Dec 14, 2006·Proceedings. Biological Sciences·Adám Zoltán LendvaiOlivier Chastel
Jun 21, 2007·Current Biology : CB·Toke T HøyeMads C Forchhammer
May 6, 2008·The Journal of Experimental Biology·Haruka Wada, Creagh W Breuner
Jul 8, 2008·General and Comparative Endocrinology·Creagh W BreunerThomas P Hahn
Sep 23, 2008·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·David W DesRochersL Michael Romero
Jul 15, 2009·General and Comparative Endocrinology·Michelle A RenselStephan J Schoech
Aug 15, 2009·Trends in Ecology & Evolution·Frances BonierJohn C Wingfield
Apr 1, 2004·Integrative and Comparative Biology·Kathy Martin, Karen L Wiebe
Sep 7, 2012·Proceedings. Biological Sciences·Andrea L Liebl, Lynn B Martin
Jan 5, 2014·General and Comparative Endocrinology·Verónica QuiriciRodrigo A Vásquez

❮ Previous
Next ❯

Citations

Sep 6, 2015·General and Comparative Endocrinology·J C WingfieldS L Meddle
Jul 17, 2018·Integrative and Comparative Biology·László Zsolt GaramszegiTony D Williams
Jan 23, 2018·Journal of Experimental Zoology. Part A, Ecological and Integrative Physiology·Jonathan W HaskinsBrian G Walker
Jan 16, 2021·Journal of Experimental Zoology. Part A, Ecological and Integrative Physiology·Austin R SpenceLorin A Neuman-Lee
Jul 13, 2019·Integrative Organismal Biology·S A MacDougall-ShackletonI T Moore

❮ Previous
Next ❯

Software Mentioned

SPSS

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.

Anxiety Disorders

Discover the latest research on anxiety disorders including agoraphobia, panic disorder, obsessive-compulsive disorder, and post-traumatic stress disorder here.

Aphasia

Aphasia affects the ability to process language, including formulation and comprehension of language and speech, as well as the ability to read or write. Here is the latest research on aphasia.