寻找时间避难所以应对热应激:尽管存在掠食风险,但夜间活动增加
Francesca Brivio1, Marco Apollonio1, Pia Anderwald2
1Department of Veterinary Medicine, University of Sassari, via Vienna 2, Sassari 07100, Italy.
Proceedings. Biological sciences
|January 16, 2024
概括
全球变暖正在导致白天动物在夜间变得更加活跃. 羊 (Capra ibex) 在温暖的日子里转向夜间活动,这对于保护计划至关重要的一种策略.
科学领域:
- 生态生态学 生态生态学
- 动物行为 动物行为
- 适应气候变化 适应气候变化
背景情况:
- 生物通过灵活的活动时间来适应环境变化.
- 全球变暖可能会迫使白天内热生物将活动转移到更凉爽的夜间时间.
- 这种转变可能会带来新的挑战,例如掠食风险和减少食效率.
研究的目的:
- 为了调查羊 (Capra ibex) 是否会因变暖而改变活动模式.
- 为了确定捕食风险是否影响这种行为转变.
- 为了评估男性和女性是否对热量诱导的活动变化有不同的反应.
主要方法:
- 分析了两处保护区47头山羊的活动数据.
- 在有狼和没有狼 (Canis lupus) 的地区比较活动模式.
- 活动时间与每日温度和月亮亮度的相关性.
主要成果:
- 在温暖的日子后和更明亮的夜晚,牛增加了夜间活动.
- 无论是雄性还是雌性,都对热量表现出一致的反应,无论捕食风险如何.
- 在掠食者存在和掠食者缺席的区域之间没有观察到响应的显著差异.
结论:
- 将活动转移到夜间是面临全球变暖的日间内热植物的可行策略.
- 这种行为可塑性对于物种在不断变化的气候条件下生存至关重要.
- 保护计划必须包括时间行为修改,以有效管理野生动物.
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