Seasonally sympatric songbirds that differ in migratory strategy also differ in neuroendocrine measures

• Published in: General and comparative endocrinology Vol. 285; p. 113250
• Main Authors: Kimmitt, Abigail A., Sinkiewicz, David M., Ketterson, Ellen D.
• Format: Journal Article
• Language: English
• Published: United States Elsevier Inc 01.01.2020
• Subjects: Animal Migration - physiology; Animals; Female; Gonadotropin-Releasing Hormone - genetics; Gonadotropin-Releasing Hormone - metabolism; Heteropatry; Hormone receptors; Hypothalamus - metabolism; Linear Models; Migration; Neurosecretory Systems - metabolism; Quantitative PCR; Reproductive physiology; RNA, Messenger - genetics; RNA, Messenger - metabolism; Seasonal sympatry; Seasons; Songbirds - physiology; Sympatry - physiology; Hormone receptors; Seasonal sympatry; Heteropatry; Reproductive physiology; Migration; Quantitative PCR

•Females differing in migratory strategy also differ in reproductive timing mechanisms.•Non-migrants (residents) are more reproductively developed than in migrants.•Top-down stimulation of the reproductive axis is stronger in residents.•Negative feedback of sex steroids on the reproductive axis is g...