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火幼虫的应激反应在息地类型之间有所不同
Laura Schulte1, Pia Oswald1, Max Mühlenhaupt1
1Behavioural Ecology Department, Bielefeld University, Bielefeld 33615, Germany.
Royal Society open science
|April 5, 2024
概括
池中的欧洲火幼虫显示压力激素水平较高. 移植实验表明,它们对不太适合的池生境的适应程度有限,强调了为保护而进行的激素监测.
科学领域:
- 生态学和进化生物学
- 环境生理学环境生理学
- 两动物保护协会
背景情况:
- 欧洲火 (Salamandra salamandra) 幼虫居住在溪流和池中,由于掠食风险更高,食物供应更低,池的息地不太适合.
- 幼虫生理学,特别是应激反应,可以表明息地质量和潜在的适应能力.
- 水性皮质是一种经过验证的非侵入性生物标志物,用于评估两幼虫的应激反应.
研究的目的:
- 调查河流与池息地对欧洲火幼虫生理应激反应的影响.
- 评估幼虫应激反应对不断变化的息地的适应潜力,使用互惠移植实验 (RTE).
- 评估非侵入性激素测量对评估息地质量和保护需求的有用性.
主要方法:
- 从溪流和池息地捕获的64只野生捕获的欧洲火幼虫的基线和压力诱导的皮质水平的测量.
- 在火幼虫中测量水性皮质释放率的验证.
- 实施了一项相互移植实验 (RTE),其中幼虫在溪流和池息地之间移动两周,以评估应激反应的可塑性.
主要成果:
- 与流中的幼虫相比,生活在池中的幼虫表现出明显更高的基线和压力诱导的皮质水平.
- 经过两周的移植后,搬到池的幼虫在应激诱导时没有显著增加皮质,无论其来源如何.
- 与基线水平相比,转移到流中的幼虫保持了较高的压力诱导的皮质激素反应.
结论:
- 与溪流相比,池的息地对欧洲火幼虫施加了更大的生理压力.
- 幼虫的应激反应在两周内显示出有限的可塑性或适应不太有利的池环境.
- 非侵入性皮质测量是评估息地质量的宝贵工具,并为两动物的保护策略提供信息.
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