揭开寻食的决策:来自实地实验的见解
Eneko Arrondo1, Jorge Carracedo2, Patrick McAllister2
1Estacion Biologica de Donana CSIC, Sevilla, Spain.
Royal Society open science
|April 17, 2025
概括
在寻找食物时,鸟优先考虑尸体的近距离,而不是饥饿. 无论资源的可用性如何,食量都保持一致,与行为中的I型功能反应保持一致.
科学领域:
- 生态生态学 生态生态学
- 行为生态学 行为生态学
- 野生动物生物学 野生动物生物学
背景情况:
- 最佳食理论 (OFT) 通常会单独评估消费者和资源.
- 猎是理想的OFT由于最小的捕获/处理的努力,专注于搜索行为.
研究的目的:
- 调查捕食决策的决定因素.
- 评估与资源丰富性相关的肉消费模式.
- 评估影响向尸体下降的因素.
主要方法:
- 61只伊比利亚的GPS跟踪.
- 通过摄影捕捉监测49具尸体.
- 分析因素:距离,饥饿和竞争.
主要成果:
- 资源距离,而不是饥饿,主要决定向尸体下降.
- 在不同资源可用性的地区,肉消费模式是相似的.
- 表现出I型的功能反应,机会性地消耗资源.
结论:
- 的食决定主要受到资源的接近的影响.
- 一致的食消费表明机会主义的食行为.
- 这些发现支持将I型功能响应模型应用于生态的应用.
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