在早期发育期间的高温会降低野生动物群体的成年认知表现和生殖成功
Camilla Soravia1, Benjamin J Ashton2, Alex Thornton3
1Centre for Evolutionary Biology, School of Biological Sciences, University of Western Australia, Perth, WA, Australia.
The Science of the total environment
|December 9, 2023
概括
在早期发育期间的高温会损害野生鸟类的认知能力,并降低繁殖成功. 热暴露的这种长期影响对面临全球变暖的野生动物来说是令人担忧的.
科学领域:
- 生态学和进化生物学.
- 气候变化生物学 气候变化生物学
- 动物认知 动物认知
背景情况:
- 全球变暖改变了野生动物的现象学,分布,行为和人口统计.
- 高温可以导致野生动物的短期认知障碍.
- 在被囚禁的早期生活中暴露于热量会导致长期的认知缺陷.
研究的目的:
- 为了研究发育温度对成年认知表现和生殖成功在野生南方足巴巴 (Turdoides双色) 的影响.
- 了解早期热量暴露如何影响野生动物适应气候变化的能力.
主要方法:
- 监测了在这个关键时期经历的巢发展和记录的温度.
- 通过协会式和逆向式学习任务评估成人认知表现.
- 量化了成年后的生殖成功,并分析了它与发育温度和认知表现的关系.
主要成果:
- 巢发育期间平均每日最高温度较高,导致协会学习的长期认知障碍.
- 在后期护理期间,增加热天 (>35.5°C) 与减少成人生殖成功有关.
- 反向学习表现,但不是关联式学习,与成年鸟类的繁殖成功有负相关性.
结论:
- 在早期发育过程中自然发生的高温对野生动物的认知和繁殖成功产生不利的长期影响.
- 早期暴露于热量的认知障碍可能会阻碍野生动物适应正在进行的全球变暖.
- 对子死亡率和幸存者表现的综合影响引发了严重的保护问题.
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