范围转移的捕食者的影响受到猎物的偏好和组成的影响
Kyle J Suen1, Ryan A Beshai1, Cascade J B Sorte1
1Ecology & Evolutionary Biology University of California Irvine California USA.
Ecology and evolution
|November 24, 2025
概括
气候变化推动了物种范围的变化. 一项关于捕食大黄鱼的研究表明,贝的存在可以减少它们对鱼猎物的影响,突出了接收者社区的重要性.
科学领域:
- 海洋生态海洋生态学
- 侵入性物种研究研究 侵入性物种研究
- 气候变化影响气候变化的影响.
背景情况:
- 由于气候变化,全球生物多样性正在转变,物种改变了它们的范围.
- 生态影响研究往往侧重于入侵物种的特征,忽视了接收者社区的影响.
- 了解猎物组成如何影响新物种的影响对于生态管理至关重要.
研究的目的:
- 调查猎物的组成如何影响猎物的偏好和范围转移的掠食性鱼,Mexacanthina lugubris的生态影响.
- 测试第二种掠食物种 () 的存在是否会改变M. lugubris对另一种掠食物种 () 的消耗效应.
主要方法:
- 在加利福尼亚州南部进行了一项实地实验,持续了8周.
- 捕食大白 (*Mexacanthina lugubris*) 在不同密度的子里被困.
- 监测了鱼和鱼 (在赤裸的岩石上和鱼上) 的掠食率.
主要成果:
- 掠食性鱼 (Mexacanthina lugubris) 显示,它更喜欢在赤裸的岩石上吃鱼,而不是在鱼和鱼上吃鱼.
- 类的存在改变了鱼可以接触到类的猎物.
- *M. lugubris*首先消耗了赤裸的岩石上的鱼,然后是鱼上的鱼,最后是鱼.
结论:
- 猎物组成显著影响范围转移的捕食者的影响.
- 贝类可以通过改变捕食者的可访问性来作为贝类的避难所,显示出明显的便利性.
- 接收社区结构对于预测和管理物种范围变化的生态后果至关重要.
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