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三只迁徙蝙蝠的皮肤皮质醇水平的差异
Dana M Green1, Christine Gilman2, Gabriela Mastromonaco2
1Department of Biology, Laboratory Building LB109, University of Regina, 3737 Wascana Parkway, Regina, SK, S4S 0A2, Canada. dana.green.eco@gmail.com.
概括
蝙蝠毛皮中的野生动物葡萄皮类皮质 (GC) 含量揭示了对环境压力的洞察力. 长距离迁徙的蝙蝠表现出更高的皮质醇水平,这表明它们适应了能源需求.
科学领域:
- 内分泌学和野生动物生态学
- 哺乳动物对环境因素的生理反应.
背景情况:
- 葡萄糖皮质醇 (GCs) 是一种关键的代谢激素,反映了生物体的生理状态和对环境变化的反应.
- 在自由行哺乳动物毛皮中测量皮质醇,一种主要的GC,提供了一种非侵入性的方法来评估不同生命阶段的基线激素水平.
- 蝙蝠是唯一的飞行哺乳动物,为研究环境对新陈代谢和能量学的影响提供了一个独特的模型.
研究的目的:
- 为了确定北美三种蝙蝠的基线皮肤皮质醇水平:,银发和小棕色的Myotis.
- 调查与迁移,冬眠,生殖状况和年龄相关的皮肤皮质醇水平的跨物种差异.
- 为了将皮质醇水平与这些蝙蝠种群中的特定生命历史特征和环境压力相关联.
主要方法:
- 在阿尔伯塔省南部和萨斯喀彻温省,从 (Lasiurus cinereus),银发 (Lasionycteris noctivagans) 和小棕色Myotis (Myotis lucifugus) 蝙蝠收集毛皮样本.
- 毛皮样本的分析,以量化皮质醇的基线水平,主要的葡萄糖皮质激素激素.
- 对不同物种,性别,年龄组 (成年人与青少年) 和生殖阶段的皮质醇水平进行比较.
主要成果:
- 在研究的蝙蝠物种中观察到基线皮肤皮质醇水平的显著跨物种差异.
- 与冬眠的短距离迁徙者相比,迁徙距离较长的蝙蝠表现出更高的皮肤皮质醇水平.
- 银发和色蝙蝠的成年人表现出比青少年更高的皮肤皮质醇水平,在繁殖阶段没有显著差异.
结论:
- 蝙蝠的皮肤皮质醇水平可以作为与迁移和能量需求相关的生理压力的有价值指标.
- 年轻蝙蝠的皮质醇升高可能反映了母体在哺乳期间的激素转移,强调了母体状况的重要性.
- 基线皮质醇测量提供了一个非侵入性工具,用于评估野生动物的健康状况和对未受到干扰的群体环境变异的反应.
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