无生物环境是否会影响鲜花和水果颜色的分布?
Agnes S Dellinger1, Leah Meier2, Stacey Smith2
1Department of Botany and Biodiversity Research, University of Vienna, Rennweg 14, Vienna, 1030, Austria.
American journal of botany
|May 14, 2025
概括
温度和UV-B辐射等非生物因素极大地影响了全球花和水果的颜色多样性,挑战了动物相互作用是唯一的驱动因素的想法. 不同的颜色对环境压力有独特的反应,影响它们的分布模式.
科学领域:
- 生态生态学 生态生态学
- 进化生物学 进化生物学
- 植物科学 植物科学
背景情况:
- 鲜花和水果的颜色在吸引动物伴侣和减轻环境压力方面起着至关重要的作用.
- 从历史上看,研究强调生物相互作用 (授粉者,分散者) 是色彩进化的主要驱动因素.
- 无生物压力因素对大规模色彩多样性的影响以及鲜花和水果的相关反应在很大程度上仍未被探索.
研究的目的:
- 调查非生物因素 (温度,干旱,UV-B辐射) 是否影响全球花和水果颜色的多样性和分布.
- 为了确定花和水果的颜色是否表现出类似或不同的环境压力反应.
- 挑战动物相互作用是颜色进化的唯一选择性代理的范式.
主要方法:
- 利用了一个数据集,涵盖51个分类中的2815种动物授粉和动物分散的植物物种.
- 量化花和水果的颜色分为八个不同的类别.
- 与温度,干旱度和UV-B辐射等宏观气候变量相关的色彩多样性和分布模式.
主要成果:
- 全球鲜花和水果颜色的多样性是不结合的,鲜花的颜色多样性低于水果的颜色多样性.
- 鲜花的色彩多样性在非生物压力较高的地区达到顶峰,而水果的色彩多样性在热带地区达到顶峰,动物互惠主义多样性很高.
- 确定了特定的色彩压力关系:粉红色/红色的花与寒冷,黄色/紫色的花与UV-B相关;红色的水果与寒冷/潮湿的条件相关,黑色的水果与温暖相关,黄色/绿色/色的水果与UV-B相关.
结论:
- 无生物因素在塑造花和水果颜色多样性的宏观生态模式方面发挥着重要作用.
- 环境压力似乎充当了关键的选择性压力,可能在颜色进化过程中先行或影响生物相互作用.
- 鲜花和水果对非生物因素表现出明显的进化反应,表明对这些相关特征起作用的差异性选择性压力.
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