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迎接挑战:安装急性期免疫反应对被囚禁的鸟迁徙体质组成或迁徙不安没有长期负面影响

T R Kelly¹, A C Butnari¹, E A MacDougall-Shackleton¹

¹Advanced Facility for Avian Research, University of Western Ontario, 1151 Richmond Street, London, Ontario, N6A 3K7, Canada.

Integrative and comparative biology

|August 3, 2023

概括

迁徙鸟类可以激活免疫反应,而不会影响它们的迁徙行为或能量储备. 这项研究表明,短期的免疫挑战并没有妨碍歌的迁徙不安或身体组成.

科学领域:

鸟类生理学鸟类生理学
免疫学免疫学免疫学
生态生态学生态生态学

背景情况:

迁徙动物在免疫防御和能量储备之间面临着激烈的权衡.
观察性研究难以将免疫反应成本与感染成本分开.
解开这些权衡需要有控制的实验方法.

研究的目的:

研究急性免疫挑战对迁徙歌鸟的生理和行为影响.
为了确定免疫激活是否影响身体组成和迁徙不安.
为了区分免疫反应的成本与潜在的病原性感染.

主要方法:

在秋季迁徙期间捕获的歌 (Melospiza melodia) 和白喉 (Zonotrichia albicollis).
给药的非传染性抗原 (钥匙孔的血清素和脂多糖) 诱导免疫反应.
监测身体质量,肌肉质量和迁徙不安的变化 (Zugunruhe).

主要成果:

这两种物种在钥匙洞的第二天暴露于血清素后,体质增加.
白喉一周暴露于脂多糖糖后,增加了瘦肉量.
白喉在钥匙孔暴露于血清素后表现出增加的迁徙不安.

结论:

短期免疫反应的激活似乎没有限制这些歌鸟的迁徙生理.
免疫诱导的身体成分变化可能是长期的,宿主抗原特异的.
实验挑战为解开野生动物免疫反应成本提供了一种途径.

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