实验性升高的温度影响大黄蜂的食和飞行速度
Maxence Gérard1,2, Erika Gardelin1, Philipp Lehmann1,3
1Department of Zoology, INSECT Lab, Division of Functional Morphology, Stockholm University, Svante Arrhenius väg 18b, 11418 Stockholm, Sweden.
Proceedings. Biological sciences
|October 29, 2024
概括
全球变暖影响大黄蜂的食. 升高的温度增加了熊蜂的飞行速度,但减少了食时间,可能破坏了重要的植物与授粉者相互作用.
科学领域:
- 生态生态学 生态生态学
- 动物行为 动物行为
- 气候变化生物学 气候变化生物学
背景情况:
- 全球变暖对野生蜜蜂种群和它们在植物授粉中的关键作用构成重大威胁.
- 以前的研究表明,气温上升对蜜蜂与植物的相互作用有负面影响,但对蜜蜂寻行为的影响仍然不太清楚.
研究的目的:
- 研究环境温度对熊蜂 (Bombus terrestris) 搜索食物行为的影响.
- 为了确定潜在的潜在生理机制,如飞行代谢率,受到温度变化的影响.
主要方法:
- 熊蜂 (Bombus terrestris) 在24°C和32°C的受控环境中从人工花中获取食物.
- 记录的关键行为包括花访问率,飞行速度,食时间和食旅行数量.
- 飞行代谢率在温度范围内测量,以评估生理反应.
主要成果:
- 在32°C时,熊蜂的花访问时间减少,但与24°C相比,花访问率和飞行速度增加.
- 在更高的温度下观察到飞行代谢率的降低,与飞行速度的增加相关.
- 每名工人食旅行的数量在32°C下降,这表明尽管能源成本较低,但潜在的热应激.
结论:
- 升高的温度显著改变了大黄蜂的食行为,包括速度和持续时间的变化.
- 在较高的温度下观察到的行为转变和潜在的压力表明,有破坏植物与传粉者相互作用的风险.
- 研究结果强调了大黄蜂对气候变化的脆弱性及其对生态系统功能的影响.
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