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混合区分析使用基于青年的估计,对高原围 (Sceloporus tristichus) 的入侵和迁移进行分析

Adam D Leaché^1,2, Hayden R Davis^1,2, Sonal Singhal³

¹Department of Biology, University of Washington, Seattle, Washington, USA.

Molecular ecology

|June 4, 2025

概括

光模型显示,亚利桑那州的高原围杂交区起源于11000年前的普莱斯托纪,而不是最近的人类活动. 分析还质疑Sceloporus tristichus和Sceloporus cowlesi的分别分类学地位.

科学领域:

进化生物学是进化的生物学.
人口遗传学人口遗传学
类学类学类学

背景情况:

混合区提供了关于人口分歧,内进和迁移的见解.
在亚利桑那州的高原围 (Sceloporus tristichus) 杂交区提供了一个研究进化动态的机会.

研究的目的:

为了确定Sceloporus tristichus杂交区是否最近由于人类的影响或在普莱斯托时代气候变化期间形成.
为了调查物种界限和Sceloporus tristichus和Sceloporus cowlesi之间潜在的侵入.

主要方法:

协同形成的建模被用来分析人口历史,分歧时间和迁移率.
进行了核DNA分析,以测试来自Sceloporus cowlesi的内进.
空间斜坡分析被用来评估混合区运动.

主要成果:

混合区起源于大约11000年前,与普世时代的结束相吻合.
在杂交区中没有发现Sceloporus cowlesi核DNA的证据,并对两种物种产生分类学的担忧.
从南向北的单向迁移被检测到,与混合区中心向北转移一致.

结论:

混合区的形成与纪气候变化有关,而不是最近的人为变化.
对于Sceloporus tristichus和Sceloporus cowlesi的分类学有效性需要进一步调查.
凝聚式方法为混合区动力学和进化过程提供了宝贵的见解.

关键词:

克莱因分析的分析.混合化混合化混合化多种多种的凝聚在一起.植物地理学植物地理学系统学是一种系统学.

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Hybrid Zones

Hybrid Zones

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Genetics of Speciation

Genetics of Speciation

Speciation is the evolutionary process resulting in the formation of new, distinct species—groups of reproductively isolated populations.

Gene Flow

Gene Flow

Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.

Speciation Rates

Speciation Rates

Mutation, Gene Flow, and Genetic Drift

Mutation, Gene Flow, and Genetic Drift

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Formation of Species

Formation of Species

Speciation describes the formation of one or more new species from one or sometimes multiple original species. The resulting species are discrete from the parent species, and barriers to reproduction will typically exist. There are two primary mechanisms, speciation with and without geographic isolation—allopatric and sympatric speciation, respectively.