利用分子遗传数据的贝叶斯分析推断南部非洲猎豹(Acinonyx jubatus)的历史人口统计。

IF 1.7 4区 生物学 Q4 BIOCHEMISTRY & MOLECULAR BIOLOGY
Genetics and Molecular Biology Pub Date : 2025-05-19 eCollection Date: 2025-01-01 DOI:10.1590/1678-4685-GMB-2024-0253
Ezequiel Chimbioputo Fabiano, Sandro Luis Bonatto, Anne Schmidt-Küntzel, Stephen J O'Brien, Laurie Marker, Eduardo Eizirik
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引用次数: 0

摘要

当代猎豹(Acinonyx jubatus)的遗传多样性一直是几项研究的焦点,这些研究表明变异水平非常低。人们提出了不同的假设来解释这种低多样性的模式,需要进一步的审查。在这里,我们使用已发表的微卫星数据和基于聚结的分析方法来探索最大的自由放养猎豹种群的历史人口统计,旨在评估当前的多样性是否可能受到历史人口下降的影响。我们的研究结果支持了一个假设,即在过去的1万年里,人口数量在历史上(很可能是逐渐的)下降,导致今天的东北人口数量在700到1600人之间。这种下降可能是由于气候驱动的植被变化影响了栖息地的适宜性,也可能是由于物种间与猎物和竞争对手的相互作用。这些结果有助于澄清非洲南部猎豹的人口统计历史及其对该种群当前遗传多样性的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Inferring the historical demography of southern African cheetahs (Acinonyx jubatus) using Bayesian analyses of molecular genetic data.

The contemporary genetic diversity of the cheetah (Acinonyx jubatus) has been the focus of several studies, which have revealed very low levels of variation. Different hypotheses have been proposed to explain this pattern of low diversity, and require additional scrutiny. Here, we used published microsatellite data and coalescence-based analytical methods to explore the historical demography of the largest free-ranging cheetah population, aiming to assess whether present-day diversity may have been impacted by a historical demographic decline. Our results support the hypothesis of a historical (and most likely gradual) demographic decline over the past ~10,000 years, leading to a present-day N e ranging from 700 to 1,600 individuals. This decline was likely induced by climate-driven vegetational shifts affecting habitat suitability and possibly also interspecies interactions with prey and competitors. These results help clarify the demographic history of cheetahs in southern Africa and its impact on the current genetic diversity of this population.

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来源期刊
Genetics and Molecular Biology
Genetics and Molecular Biology 生物-生化与分子生物学
CiteScore
4.20
自引率
4.80%
发文量
111
审稿时长
3 months
期刊介绍: Genetics and Molecular Biology (formerly named Revista Brasileira de Genética/Brazilian Journal of Genetics - ISSN 0100-8455) is published by the Sociedade Brasileira de Genética (Brazilian Society of Genetics). The Journal considers contributions that present the results of original research in genetics, evolution and related scientific disciplines. Manuscripts presenting methods and applications only, without an analysis of genetic data, will not be considered.
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