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化石昆虫养的痕迹表明,澳大利亚标志性的白树的进化历史和生物多样性未被认可
L Alejandro Giraldo1, Peter Wilf1, Michael P Donovan2
1Department of Geosciences and Earth and Environmental Systems Institute, Pennsylvania State University, University Park, PA, 16802, USA.
The New phytologist
|November 28, 2024
概括
化石昆虫食草动物对5200万年前树叶造成的损害与现代损害相匹配. 这表明古老的植物-昆虫关系今天仍然存在,揭示了深层次的进化联系.
科学领域:
- 古生物学的古生物学
- 进化生物学 进化生物学
- 昆虫学 昆虫学是一门学科.
背景情况:
- 化石的植物-昆虫草食动物协会是理解地质时间上的陆地社区组合的关键.
- 古代协会的证据持续到今天是罕见的,这限制了我们对长期生态动态的理解.
研究的目的:
- 通过比较化石损害与现代损害对树物种来调查植物-昆虫食草协会的持久性.
- 为了确定在早期的欧世纪观察到的昆虫草食模式是否仍然存在于现存的树种群中.
主要方法:
- 对284个化石Eucalyptus frenguelliana叶子的分析,这些叶子来自巴塔哥尼亚的Eocene早期Laguna del Hunco热带雨林地区.
- 在化石叶子上对28种已识别的昆虫草食损伤类型进行比较,这些损伤类型与来自澳大利亚的1万多种现存的热带雨林相关的白树物种的草原标本中发现的模式进行比较.
主要成果:
- 在化石树叶上发现了28种不同的昆虫草食损伤类型.
- 在化石叶子上发现的所有28种损伤类型也在现存的树标本上观察到.
- 在现代物种上存在所有化石损伤类型的存在表明,这些关联跨越了5200万年,遍及南半球.
结论:
- 这项研究提供了强有力的证据,证明了昆虫食草系与树属之间的长期关联,至少持续了5200万年.
- 湿树林中的利基保护主义可能促进了这种长期持续的植物-昆虫相互作用.
- 化石证据显著有助于了解现存的昆虫草食群的组成,并突出了通过古生物学发现现存生物多样性的潜力.
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