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外在生殖隔离的变化对物种化过程有多重要?

Linyi Zhang^1,2, Etsuko Nonaka^3,4, Megan Higgie⁵

¹Department of Biological Sciences, George Washington University, Washington, D.C. 20052, USA linyi.zhang@gwu.edu.

Cold Spring Harbor perspectives in biology

|March 19, 2024

概括

生殖隔离 (RI) 的强度因生态条件而异. 我们的模拟表明,混合体健康的空间和时间变化往往会增加基因流动,可能阻碍物种完成.

科学领域:

进化生物学进化生物学
规范研究研究规范研究
人口遗传学人口遗传学

背景情况:

生殖隔离 (RI) 的强度因生态条件而异.
大多数物种化研究都在广泛的环境中检查RI,忽视了更细微的空间或时间异质性.
在RI的变化可能抑制物种化 (漏洞障碍) 或促进它 (增强).

研究的目的:

研究RI空间和时间变化的对物种的影响.
检查跨时空混合健身的变化如何影响基因流动.
探索变量RI在完成物种化所面临的挑战中的作用.

主要方法:

关于RI变化的实地研究的文献综述.
基于个体的模拟,以模拟混合健身变异.
基因流动动力学分析在静态与可变混合适应条件下.

主要成果:

跨越空间和时间的混合健身的变化,与静态条件相比,通常会增加基因流.
这种基因流量的增加与杂交物种的基因流和选择强度之间的凸起关系有关.
变量RI对基因流动的影响在平均RI较低时最为显著.

结论:

在RI的空间和时间变化是影响物种化的普遍,未被充分探索的因素.
变量RI,特别是当它很弱时,可以增加基因流动,并挑战物种化的完成.
需要进一步的经验研究来记录和理解外部RI变化的流行.

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