系统地理分析揭示了印度黑鸭(羚羊)的遗传结构

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Ranjana Bhaskar, Praveen Kanaparthi, Kumarapuram Apadodharanan Subramanian
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引用次数: 0

摘要

黑斑羚羊(Antilope cervicapra)是印度次大陆的特有物种。它的栖息地非常广泛,从开阔的平原、草地、灌木丛到森林稀疏的地区都有。目前的研究有助于深入了解黑巴克种群中现有的遗传变异,这对提高种群的适应性和长期生存至关重要。为了了解黑鸭子的系统发育和遗传多样性,我们对黑鸭子分布在印度 18 个地点的颗粒样本(n = 233)进行了 MtDNACytb 和对照区的处理。在这些种群中观察到了较高的单体型(0.991)和核苷酸多样性(0.033)。基于 mtDNA 的 AMOVA 显示,印度黑鸭种群间的遗传变异率为 41.73%。结果证实,黑鸭子在不同地点都有独特的单倍型,而其他种群并不共享这种单倍型。从地理位置上看,我们的研究结果发现了四个不同的基因群:印度北部、南部东部、南部西部和东部中部地区。研究显示,一个祖先种群最初分离成两个群体,从而形成了北方和南方聚类。随后,南方人口进一步分化成三个群:东南、西南和中东部人群。邻接分析表明,东部-中部地区是南部-东部地区的一部分,而贝叶斯系统发育则表明,东部-中部地区后来出现了一个独立的支系。贝叶斯天际线图显示了北部地区种群平衡的历史,随后东部南部、西部南部和中东部地区种群在近期出现扩张。人口统计学分析表明,黑腹滨鹬已经有效地适应了各自的地貌。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Phylogeographic analysis reveals genetic structure of blackbuck (Antilope cervicapra) in India

Phylogeographic analysis reveals genetic structure of blackbuck (Antilope cervicapra) in India

The blackbuck (Antilope cervicapra) is endemic to the Indian subcontinent. It occurs in a wide variety of habitats that range from open plains, grasslands, scrublands, and lightly forested areas. The current study provides insights into the existing genetic variation in blackbuck populations, which is crucial for enhancing population fitness and long-term survival. To understand the phylogeny and genetic diversity of blackbuck, we processed the pellet samples (n = 233) from 18 locations across their distribution range in India for MtDNACytb and control region. High haplotype (0.991) and nucleotide diversity (0.033) were observed in the populations. The mtDNA-based AMOVA indicated 41.73% genetic variations among the blackbuck populations of India. The results confirmed that the blackbuck has a unique haplotype in different locations that is not shared by other populations. Geographically, our results identified four genetically distinct clusters: Northern, Southern East, Southern West and Eastern central regions of India. The study reveals that an ancestral population initially separated into two groups, leading to the formation of the North and South clusters. Subsequently, the South population diverged further into three clusters: Southeast, Southwest, and Eastern-central populations. Neighbor-joining analysis suggested the Eastern-central region as part of the Southern East region, while Bayesian phylogeny indicated a separate clade emerging from the Eastern-central region at a later time. Bayesian skyline plots revealed a history of population equilibrium in the Northern region followed by a recent population expansion in Southern East, Southern West and Eastern-central regional populations. Demographic analysis suggests that blackbucks have effectively adapted to their respective landscapes.

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来源期刊
Accounts of Chemical Research
Accounts of Chemical Research 化学-化学综合
CiteScore
31.40
自引率
1.10%
发文量
312
审稿时长
2 months
期刊介绍: Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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