叶子三介导的掠食者对虫在豆植物中的草食虫分布的影响
Tatsuya Yoshida1, Yasuyuki Choh2
1Laboratory of Applied Entomology, Department of Horticulture, Chiba University, 648, Matsudo, Chiba, 271-8510, Japan.
Experimental & applied acarology
|April 10, 2024
概括
掠食性虫 (Phytoseiulus persimilis) 在豆叶上留下痕迹,影响食草虫 (Tetranychus urticae) 产卵的地方. 这些捕食者的痕迹影响了草食动物的分布,影响了后代.
科学领域:
- 生态生态学 生态生态学
- 化学生态化学生态学
- 行为生态学 行为生态学
背景情况:
- 捕食者经常选择具有特定微观结构的叶片,留下化学或物理痕迹.
- 草食性关节动物可能会根据捕食者存在信号改变它们的分布.
- 植物微观结构在媒介掠食者痕迹对草食动物分布的影响中的作用尚未完全理解.
研究的目的:
- 研究叶子微观结构上的捕食者痕迹如何影响草食虫的分布.
- 为了检查掠食性虫Phytoseiulus persimilis和草食虫Tetranychus urticae在豆植物 (Phaseolus vulgaris) 上的卵置模式.
主要方法:
- 使用豆植物在不同的叶面和类型上具有不同体密度.
- 分析了成年雌性P.persimilis和T.urticae的卵位模式.
- 评估了先前的捕食者暴露对T. urticae卵位偏好的影响.
主要成果:
- 帕西米利斯 (P. persimilis) 首选在第一个三叶状叶子上排卵,三叶状叶子的密度较高.
- 一开始,T. urticae更喜欢斜叶面,但在植物暴露于捕食者后,这种偏好减少了.
- 在叶片上繁殖的T. urticae带有捕食者痕迹,表明变化的分布而不是避免.
结论:
- 豆叶上的捕食者痕迹,由三体等微观结构介导,影响草食动物的卵巢位置选择.
- 在随后的几代人中,T. urticae的繁殖成功可能会受到影响,原因是由于对捕食者线索的反应而改变了卵位.
- 植物微观结构在植物,食草动物和捕食者之间的三性相互作用中发挥着作用.
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