野生犬类和类的不同之处在于它们依赖于重复使用的旅行路线
William F Fagan1, Ananke G Krishnan1, Christen H Fleming1,2,3,4
1Department of Biology, University of Maryland, College Park, MD 20742.
概括
哺乳动物食肉动物表现出明显的运动模式,犬类比类更强烈地使用旅行路线. 空间使用的这种差异具有进化根源,并影响生态相互作用.
科学领域:
- 生态学和进化生物学
- 动物的运动生态学动物的运动生态学
- 行为生态学 行为生态学
背景情况:
- 动物的运动和空间使用受到环境和认知因素的影响.
- 旅行路线的重复使用集中了活动,影响了捕食,交配和疾病传播.
- 跨物种路线使用的变化尚未得到充分理解.
研究的目的:
- 为了研究哺乳动物食肉动物中对重复使用的旅行路线的依赖性,在物种级别上存在差异.
- 为了确定是否存在分类级别的差异存在于canids和felids之间的路线使用.
- 探索狩猎策略和空间背景对路线重复使用强度的影响.
主要方法:
- 分析了1,239种息地食肉哺乳动物 (16种犬类,18种类动物) 的GPS运动轨迹.
- 在全球数据集和共享景观中比较犬类和类之间的路线密度和重复使用强度.
- 在不同景观中评估物种内路径密度.
主要成果:
- 与类相比,犬类在家庭范围内的路径密度显著增加 (在全球范围内增加15%,在共享景观中增加33%).
- 路线密度在不同景观的物种中保持相似,这表明息地独立.
- 猎犬表现出比类更密集地重复使用旅行路线,受狩猎策略和空间环境的影响.
结论:
- 肉食动物的路线使用模式具有显著的进化组成部分,在犬类和类之间存在明显的分类级别差异.
- 在运动模式中观察到的差异挑战了经典的捕食者-猎物理论假设.
- 了解这些运动变异对于人与野生动物的相互作用和基于遭遇的生态过程至关重要.
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