昆虫食草的空间变化是否与植物质量的变化相匹配? 一个元分析
Elena L Zvereva1, Bastien Castagneyrol2, Mikhail V Kozlov1
1Department of Biology, University of Turku, Turku, Finland.
Ecology letters
|May 23, 2024
概括
昆虫的草食不能由植物的防御系统 (如二次代谢产物或物理特征) 预测. 较高的草食动物压力仅与植物水平的增加有关,这表明营养价值是关键.
科学领域:
- 生态生态学 生态生态学
- 植物与昆虫的相互作用
- 进化生物学是进化的生物学.
背景情况:
- 草食动物压力通常是由植物抗草食动物防御系统预测的.
- 植物特征,如二次代谢物和物理特征,通常被研究为防御.
- 草食动物的空间变化及其与植物质量的关系需要进一步研究.
研究的目的:
- 测试野地昆虫草食的空间变化是否与植物质量的变化有关.
- 通过元分析分析,分析草食水平与特定植物特征之间的关系.
- 根据植物防御来评估预测草食压力的现有理论.
主要方法:
- 对223个相关系数进行了元分析.
- 检查了草食水平和植物二次代谢物之间的关系.
- 评估了草食和叶子的物理特征之间的相关性,包括度.
主要成果:
- 在草食动物和植物二次代谢物或物理叶子特征之间没有发现总体相关性.
- 在田间草食动物和植物度之间观察到显著的积极关联.
- 个别研究显示出低和相反的相关性混合,掩盖了总体趋势.
结论:
- 植物的二次代谢物和物理特征不足以预测野外条件下的昆虫草食.
- 植物的营养价值,特别是含量,是影响昆虫草食的空间变化的主要自下而上的因素.
- 目前将植物防御与草食相联系的理论需要改进,以更好地解释现场观测.
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