模拟男性替代生殖策略对人口动态的影响
Jennifer A M Young1, Sigal Balshine2, David J D Earn1
1Department of Mathematics and Statistics, McMaster University, Hamilton, Ontario, Canada L8S 4K1.
Journal of the Royal Society, Interface
|October 25, 2023
概括
男性的替代生殖策略 (ARTs) 可以显著影响人口动态. 这项研究表明,某些ART频率可以导致人口减少甚至灭绝,这凸显了在人口模型中考虑表型可塑性的重要性.
科学领域:
- 生态生态学 生态生态学
- 进化生物学 进化生物学
- 人口动态 人口动态
背景情况:
- 数学模型经常探索男性替代生殖策略 (ARTs) 的演变.
- 然而,这些ART的人口动态后果尚未得到充分研究.
- 了解ART对于预测物种种群轨迹至关重要.
研究的目的:
- 开发一个包含两个男性ART的种群模型:守护者和运动鞋.
- 研究环境决定的战术频率和密度依赖的繁殖成功如何影响人口动态.
- 评估ART可能导致人口崩或灭绝的可能性.
主要方法:
- 开发了一个数学人口模型,其中有两个男性表型 (守护者和运动鞋).
- 假设的战术频率是由环境决定的.
- 在这两种策略中都包含了密度依赖的繁殖成功.
主要成果:
- 运动鞋的存在通常会增加人口密度.
- 然而,高比例的运动鞋 (或罕见的守护者) 可以导致种群灭绝.
- 在极端的饮食中观察到Allee效应,即人口增长减少至低于值密度.
结论:
- 替代生殖策略 (ARTs) 可以深刻影响人口动态.
- 在种群模型中,应该考虑像ARTs一样的表型可塑性,特别是在生态或商业重要物种中.
- 这项研究提供了适用于入侵性圆 (Neogobius melanostomus) 等物种的见解.
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