草食动物和授粉者体型对草果质量的影响
Annika Leigh Salzberg1, Heather Grab2, Casey Hale1
1Department of Entomology, Cornell University, Ithaca, New York, United States of America.
PloS one
|June 25, 2024
概括
土地使用变化改变了昆虫的体型,影响了草作物. 较大的草食害虫,而不是授粉者,减少水果大小,突出特征变化.
科学领域:
- 生态生态学 生态生态学
- 昆虫学 昆虫学是一门学科.
- 农业 农业 农业 农业
背景情况:
- 土地利用变化影响着传粉者和食草动物种群,影响作物生产.
- 昆虫的特征,特别是身体大小,可以根据景观梯度而有所变化.
- 这些特征变化对作物生产率的影响仍然未得到充分研究.
研究的目的:
- 为了调查草食害虫的体型是否在土地使用梯度上有所变化.
- 为了确定授粉者 (Bombus impatiens) 和食草动物 (Lygus lineolaris) 身体大小的变化如何影响草果生产.
- 测试这一假设,即关键物种的体型变化会影响作物生产率.
主要方法:
- 在不同的土地使用景观中评估Lygus lineolaris的体型变化.
- 在草植物上进行了受控实验,以评估不同规模的授粉者和食草动物对水果生产的影响.
- 在不同的昆虫大小操纵下测量了水果大小和损伤.
主要成果:
- 在拥有更多自然和半自然息地的景观中,食草虫害较小.
- 草食虫害的大小,而不是授粉者大小,对草果产量产生了微小的负面影响.
- 暴露于较大的食草害虫的植物产生较小的水果.
结论:
- 昆虫害虫的功能特征,如身体大小,可以根据土地使用情况而有所不同.
- 草食害虫体型的变化,受景观层面的土地使用的影响,可能会对作物产量产生负面影响.
- 土地使用变化通过昆虫社区结构的改变和个体特征变异影响作物生产.
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