秋季网虫宿主植物的偏好导致其与寄生虫的相互作用减少了掠食敌人空间
Lina Pan1, Wenfang Gao1, Zhiqin Song1
1Tianjin Key Laboratory of Conservation and Utilization of Animal Diversity, Tianjin Normal University, Tianjin 300387, China.
Insects
|August 28, 2025
概括
秋季网虫 (Hyphantria cunea) 喜欢多树 (Morus alba), 它们的捕食者较少. 这种植物提供了无敌的空间,减少了寄生虫黄蜂 (Chouioia cunea) 的攻击.
科学领域:
- 生态学
- 化学生态学
- 昆虫学
背景情况:
- 植物和昆虫可以相互防御.
- 草食动物可能会选择阻止自然敌人的宿主植物.
- 寄生虫是食草昆虫的自然敌人.
研究的目的:
- 调查秋季网虫 (Hyphantria cunea) 的宿主植物偏好与其主要的自然敌人寄生虫黄蜂 (Chouioia cunea) 的植物吸引力有关.
- 了解宿主植物挥发性化合物的作用,以调解这种三性相互作用.
主要方法:
- 评估了女性秋季网虫 (Hyphantria cunea) 的宿主植物偏好.
- 对不同宿主植物的营养含量进行了分析.
- 使用气体染色体质谱 (GC-MS) 和气体染色体电磁探测 (GC-EAD) 来识别草食诱导的植物挥发物 (HIPV).
主要成果:
- 梅 (Morus alba) 是雌性秋季网虫的首选宿主植物,尽管营养价值低于最佳.
- 与其他宿主植物相比,木吸引了较少的寄生虫黄蜂 (Chouioia cunea).
- 果是唯一一个不释放三糖的植物物种,这是一种在HIPV中发现的挥发性化合物.
结论:
- 秋季网虫 (Hyphantria cunea) 选择木 (Morus alba) 来创造一个没有敌人的空间,尽量减少寄生虫黄蜂 (Chouioia cunea) 的掠夺风险.
- 草食动物对宿主植物的选择受到营养效益与对自然敌人的保护之间的平衡的影响.
- 适应性草食策略涉及复杂的多营养相互作用, 不仅仅是最佳营养.
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