松树对虫激素的反应:对虫卵位和幼虫生长的影响
Asifur Rahman-Soad1, Norbert Bittner1,2, Monika Hilker1
1Applied Zoology/Animal Ecology, Institute of Biology, Freie Universität Berlin, 12163 Berlin, Germany.
Insects
|June 26, 2024
概括
松树接触到昆虫的性激素可以增强对虫蛋的防御能力. 然而,松的雌性适应了,减少了在暴露于激素的树上产卵,但幼虫的表现没有受到影响.
科学领域:
- 植物与昆虫的相互作用
- 化学生态化学生态学
- 行为生态学 行为生态学
背景情况:
- 昆虫激素调解通信,但它们对植物防御和随后的草食效应的影响还未得到充分研究.
- 以前的研究表明,松树 (Pinus sylvestris) 在暴露于其性费洛蒙时,可以增强对Diprion pini蛋的防御能力.
- D. pini和P. sylvestris之间的共同进化表明,虫可能对植物反应进行了反适应.
研究的目的:
- 调查Diprion pini如何应对由其自身的性激素诱导的增强植物防御.
- 为了评估D. pini雌性对暴露于费洛蒙的松树的行为反应.
- 评估激素诱导的植物防御对D. pini幼虫表现和化成功的影响.
主要方法:
- 进行了行为测试,以观察D. pini雌性的卵置选择.
- 在行为测试之前,松树被暴露在D. pini的性激素中.
- 幼虫的表现和化成功被监测在暴露于费洛蒙和未暴露的松树.
主要成果:
- 雌性D. pini没有根据气味进行歧视,但在接触时,在暴露于费洛蒙的松树上显示出减少的卵位.
- 与未暴露对照组相比,暴露于费洛蒙的松针的卵子存活率较低.
- 的表现和化成功没有受到松树暴露于费洛蒙的影响.
结论:
- 松叶雌性表现出修改的卵置行为,以抵消费洛蒙诱导的植物防御.
- 虽然卵子的存活率降低,但这些植物反应不会对D. pini幼虫的发育或存活产生负面影响.
- 这项研究强调了昆虫激素,植物防御和草食动物对抗适应之间的复杂相互作用.
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