Loshchagina J A, Tsvey A L, Naidenko S V
Zoological Institute, Russian Academy of Sciences, St. Petersburg, Russia.
Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Moscow, Russia.
Dokl Biol Sci. 2017 Mar;473(1):61-63. doi: 10.1134/S0012496617020089. Epub 2017 May 16.
To estimate differences in hormonal mechanisms of regulation of spring and autumn migration in European robins Erithacus rubecula, the plasma corticosterone (CORT) concentrations were compared in birds caught during both migratory seasons. A total of 414 blood samples were analyzed. It was found that the baseline and stress-induced CORT concentrations in free-living robins during spring migration were practically twice as high as during autumn passage. Our results demonstrate that autumn and spring migrations are independent stages of the avian annual cycle. Probably, the increase in the CORT concentrations in spring can be considered to be physiological preparation for the breeding season.
为了评估欧洲知更鸟（欧亚鸲）春季和秋季迁徙调控的激素机制差异，对两个迁徙季节捕获的鸟类血浆皮质酮（CORT）浓度进行了比较。共分析了414份血样。结果发现，自由生活的知更鸟在春季迁徙期间的基线和应激诱导CORT浓度几乎是秋季迁徙期间的两倍。我们的结果表明，秋季和春季迁徙是鸟类年度周期的独立阶段。春季CORT浓度的增加可能被认为是繁殖季节的生理准备。
