父亲对新型捕食者暴露的反应与三尖杆背脊后代的跨代反应相关
Michaela M Rogers1,2, Jennifer K Hellmann1,2
1Department of Biology, University of Dayton, Dayton, OH 45469, USA.
Royal Society open science
|January 9, 2025
概括
父母暴露在视觉捕食者的线索中,主要是三脊椎背后的后代. 然而,这种跨代塑性 (TGP) 可能导致不适应性反应,增加后代掠食风险.
科学领域:
- 生态生态学 生态生态学
- 进化生物学 进化生物学
- 动物行为 动物行为
背景情况:
- 父母的经验可以通过跨代可塑性 (TGP) 影响后代的特征.
- 父母用来检测新型捕食者的感官线索及其对后代TGP的影响尚未得到充分理解.
- 个人可能依靠单个或多个感官模式来识别和应对新的威胁.
研究的目的:
- 为了研究一种新型捕食者的视觉和嗅觉线索如何影响三脊的父母行为.
- 为了确定父亲暴露于捕食者的后果,对后代的反捕食者行为和生存的线索.
- 评估仅视觉线索是否足以引发跨代影响.
主要方法:
- 在受精之前,三脊鱼雄性被暴露在新型鱼捕食者的视觉和/或嗅觉线索中.
- 对后代进行了反捕食者行为和对抗活捕食者的生存测试.
- 暴露后记录了父亲的方向和接近捕食者线索的距离.
主要成果:
- 暴露于视觉捕食者线索的父亲表现出对新型捕食者的更强的定位和接近.
- 暴露于视觉线索的父亲的后代更快被活生生的捕食者捕获.
- 仅仅视觉线索就足以诱导对后代掠食风险的跨代影响.
结论:
- 父亲接触到视觉捕食者线索可以诱导三脊椎杆背脊后代的跨代效应.
- 这些由视觉线索引发的跨代效应似乎没有提供对新型捕食者的适应性启动.
- 这项研究表明,在应对新型掠食风险时,可能存在适应不良的跨代可塑性.
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