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在两种竞争中的共存与延迟成熟
Maud El-Hachem1, Nicholas J Beeton2
1Data61, CSIRO, Battery Point, Tasmania, Australia. maud.el-hachem@data61.csiro.au.
Journal of mathematical biology
|December 19, 2023
概括
成熟期间的竞争是物种生存的关键. 使用分布式延迟的新模式促进了物种的共存和生存,影响了害虫和危物种的管理.
科学领域:
- 生态生态学 生态生态学
- 数学生物学 数学生物学
- 人口动态 人口动态
背景情况:
- 跨物种和内物种竞争对物种产生重大影响,特别是在生命未成熟阶段.
- 蚊子物种,关键的疾病载体,经常共存,并在成熟期间面临激烈的竞争.
研究的目的:
- 通过将成熟时间的分布式延迟纳入Lotka-Volterra竞争模型的泛化.
- 分析成熟延迟对物种竞争,共存和生存的影响.
主要方法:
- 使用了一个分布式延迟内核,由一个截断的Erlang分布表示.
- 通过线性链近似将延迟微分方程转换为普通微分方程.
- 使用nullclines和局部稳定性分析来确定稳定性条件.
主要成果:
- 均衡解决方案是由埃尔兰分布的形状,速率和截断决定的.
- 数字解决方案展示了竞争排斥和共存的场景.
- 发现分布式延迟与离散延迟相比,促进了物种的共存和生存.
结论:
- 具有分布式成熟延迟的一般化Lotka-Volterra模型提供了对人口动态的洞察力.
- 整合分布式延迟可以增强物种的生存和共存,这对于管理生态和经济重要物种至关重要.
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