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使用全基因组数据来确定对休斯顿 (Bufo [= Anaxyrus] houstonensis) 的分类地位和评估种群遗传结构

Shashwat Sirsi¹, David Rodriguez², Michael R J Forstner²

¹Department of Biology, Texas State University, 601 University Drive, San Marcos, TX, 78666, USA. s_s477@txstate.edu.

Scientific reports

|February 9, 2024

概括

休斯顿 (Anaxyrus houstonensis) 在进化上与美国 (Anaxyrus americanus) 不同,这证实了它独特的保护地位. 基因分析确定了四个管理单元,以指导对这个临灭绝的两动物的有针对性的保护工作.

科学领域:

两动物遗传学两动物遗传学
保护生物学保护生物学
进化生物学是进化的生物学.

背景情况:

休斯顿青 (Anaxyrus houstonensis) 临灭绝,由于土地使用变化而面临衰退.
种群补充是一种主要的保护策略,但其进化意义尚不清楚.

研究的目的:

为了澄清休斯顿的进化特色和保护意义.
调查与近北极和中美洲相关的物种的遗传关系.

主要方法:

全基因组的核DNA标记物 (1170) 用于遗传学分析.
使用混合物分析和ABBA-BABA测试来评估遗传特异性和基因流动.
遗传学分析检查了Anaxyrus houstonensis,Anaxyrus americanus群体和Anaxyrus nebulifer之间的关系. 这种类型的植物有多大?

主要成果:

遗传学分析证实 Anaxyrus houstonensis 与 Anaxyrus americanus 是不同的.
混合物分析支持最近Anaxyrus houstonensis和Anaxyrus americanus之间进行的生殖隔离.
在近北极物种之间发现了历史性的基因流动,但在近北极和中美洲物种之间没有发现.
在Anaxyrus houstonensis中,基于遗传差异化确定了四个不同的管理单位 (MU).

结论:

阿纳克西鲁斯 (Anaxyrus houstonensis) 代表了一个进化新且独特的分类群.
管理单位需要量身定制的保护策略,包括囚禁繁殖,人口补充和息地恢复.
这项研究重申了这个临灭绝的遗物物种独特的进化地位.

关键词:

布福 [= 亚纳克西鲁斯] 休斯敦人种临灭绝的危物种历史性的基因流动人类遗传学是一个学科.ddRADseqqq 的意思

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