猎物出租车作为掠食者-猎物系统中的空间模式的驱动者:从斑点到螺旋和混乱
Henan Wang1, Suli Liu1, Huilai Li1
1School of Mathematics, Jilin University, Changchun 130012, People's Republic of China.
Chaos (Woodbury, N.Y.)
|January 9, 2026
概括
排斥性猎物出租车,捕食者避开猎物,驱动生态模式的形成,与仅仅是扩散不同. 这种行为在捕食者-猎物系统中产生复杂的空间结构和动态.
科学领域:
- 生态生态学 生态生态学
- 数学生物学 数学生物学
- 理论生态学理论生态学
背景情况:
- 空间模式的形成在生态学中至关重要.
- 经典模型通常依赖于扩散驱动的不稳定性 (图灵不稳定性).
- 导向运动,如猎物出租车在模式形成中的作用不太清楚.
研究的目的:
- 在生态学中确定空间模式形成的行为驱动机制.
- 为了调查排斥性猎物税在产生时空复杂性的作用.
- 分析一个扩散的掠食者-猎物模型与猎物出租车和克劳利-马丁功能反应.
主要方法:
- 扩散性捕食者-猎物模型的开发,包括猎物出租车和克劳利-马丁功能反应.
- 数学分析以确定解决方案的全球存在,独特性和局限性.
- 基于猎物税系数和转换率推导图灵和霍夫分叉的值.
- 广泛的数值模拟来观察新出现的模式.
主要成果:
- 排斥性猎物税率 (χ<0) 引发了新的不稳定性,引发了图灵和霍夫的分叉.
- 具有吸引力的猎物税率 (χ>0) 有稳定作用.
- 模拟显示了各种模式:斑点,条纹,迷宫,螺旋波和混乱.
- 不稳定性值是明确衍生出来的,并且可以从生态上解释.
结论:
- 排斥性猎物出租车是生态系统中空间自我组织的强大,行为驱动的机制.
- 这种机制产生了与扩散驱动的不稳定性不同的复杂性.
- 这些发现扩大了生物模式形成理论,突出了定向运动的重要性.
相关概念视频
Predator-Prey Interactions
21.0K
Predators consume prey for energy. Predators that acquire prey and prey that avoid predation both increase their chances of survival and reproduction (i.e., fitness). Routine predator-prey interactions elicit mutual adaptations that improve predator offenses, such as claws, teeth, and speed, as well as prey defenses, including crypsis, aposematism, and mimicry. Thus, predator-prey interactions resemble an evolutionary arms race.
21.0K
Optimal Foraging
13.6K
How animals obtain and eat their food is called foraging behavior. Foraging can include searching for plants and hunting for prey and depends on the species and environment.
13.6K
Ecological Niches
26.0K
All organisms have a position within an ecosystem. The complete set of living and nonliving factors—including food resources, climate, and terrain—that define the position of a given organism are collectively referred to as the organism’s ecological niche.
26.0K
Speciation Rates
22.6K
Overview
22.6K
Distribution and Dispersion
24.1K
To understand intra-specific interactions in populations, scientists measure the spatial arrangement of species individuals. This geographic arrangement is known as the species distribution or dispersion. Highly territorial species exhibit a uniform distribution pattern, in which individuals are spaced at relatively equal distances from one another. Species that are highly tied to particular resources, such as food or shelter, tend to concentrate around those resources, and thus exhibit a...
24.1K
What are Populations and Communities?
37.0K
Overview
37.0K


