对不同的模拟交配系统和分散策略而言,交配系统诱导的范围扩张率的滞后:一个建模研究
W H Morgan1, S C F Palmer2, X Lambin2
1School of Biological Sciences, University of Aberdeen, Zoology Building, Tillydrone Avenue, Aberdeen, AB24 2TZ, UK. whm202@gmail.com.
Oecologia
|January 3, 2024
概括
由于交配失败导致的物种范围扩张滞后可以减轻. 偏好殖民遥远息地的分散策略有效地减少了这些滞后,促进了碎片化景观的成功殖民.
科学领域:
- 生态生态学 生态生态学
- 进化生物学 进化生物学
- 计算生物学 计算生物学
背景情况:
- 物种分布不匹配是由于环境变化引起的,导致种群反应滞后.
- 交配系统可以通过在范围边缘造成交配失败来加剧这些滞后.
- 积极分散者使用社会信息来告知分散策略需要进一步调查.
研究的目的:
- 模拟交配系统如何影响物种殖民碎片化景观的能力.
- 探索分散过程中的社会信息如何减轻受约束交配系统引起的滞后.
- 调查不同结算策略对范围扩张的影响.
主要方法:
- 利用基于个体的模型 (IBM) 模拟物种的分散和殖民.
- 将两性交配模型与仅为女性的模型进行比较,以评估伴侣限制效应.
- 实施了伴侣搜索和负密度依赖的结算策略.
主要成果:
- 两性模型中的伴侣寻找要求与伴侣无限模型相比,持续减缓了范围的扩张.
- 一个寻找伴侣的结算策略对传播率的影响最小.
- 负密度依赖的结算策略显著加快了范围的扩张,因为增加了长距离分散.
结论:
- 即使在范围边缘发生轻微的配对故障也可能导致相当大的范围扩张滞后.
- 优先殖民遥远,稀疏的人口区域的分散策略可以有效地缓解这些滞后.
- 了解交配系统的动态对于预测物种对环境变化和息地碎片化的反应至关重要.
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