侵袭性疫情昆虫的森林脱叶:对一个有魅力的巨型虫造成灾难性的后果
Richard L Lindroth1, Mark R Zierden1,2, Clay J Morrow3,4
1Department of Entomology University of Wisconsin-Madison Madison Wisconsin USA.
Ecology and evolution
|August 20, 2024
概括
侵袭性海绵虫增加了森林植物的毒性,损害了本地虫种群. 这项研究强调了侵入性昆虫如何破坏本地昆虫健康和森林生态系统.
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.
- 森林科学 森林科学 森林科学
背景情况:
- 全球昆虫种群正在迅速减少.
- 昆虫减少的原因是复杂的,并未完全理解.
- 侵入性物种可以改变生态系统并影响本地野生动物.
研究的目的:
- 为了测试森林被入侵昆虫的脱叶是否会增加植物毒性,伤害本地昆虫.
- 为了研究侵袭性海绵脱叶对本地的健康的影响.
- 了解森林植物化学物质的变化如何影响本地昆虫种群.
主要方法:
- 利用一种自然实验来研究侵袭性海绵 (Lymantria dispar) 脱叶对树 (Populus tremuloides) 的影响.
- 测量了叶子防御化合物的表达在树叶脱落后的青树基因型.
- 评估了原生多叶 (Anthereae polyphemus) 在无叶和无叶树上的生存,食和生长情况.
主要成果:
- 阿斯的基因型显示,在海绵脱叶后,叶状防御表达平均增加了8.4倍.
- 升高的叶子防御系统显著降低了多蝶幼虫的生存率,食和生长.
- 侵入性昆虫的爆发改变了森林植物的化学成分,为本地昆虫创造了有毒的环境.
结论:
- 侵入性昆虫,如海绵,可以通过增加植物毒性来间接伤害本地昆虫.
- 森林植物化学景观因入侵物种而发生的变化对本地昆虫种群构成威胁.
- 这些影响对森林社区的多样性和生态系统功能有潜在的级联影响.
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