极度濒危灰鼻猴(Rhinopithecus brelichi)仅存种群的生存能力和遗传结构

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Yanqing Guo, Paul A. Garber, Renbao Ping, Jiang Zhou
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引用次数: 0

摘要

过去几十年来,栖息地的破坏、土地的转换和森林的破碎化导致野生动物和植物物种大量减少并在当地灭绝。灰鼻猴(Rhinopithecus brelichi)目前被列为世界上最濒危的 25 种灵长类动物之一,估计其野生种群数量不足 400 只。鉴于小种群规模对遗传多样性的潜在负面影响,我们研究了气候、近亲繁殖、亲缘关系、种群结构和有效种群规模等因素对其遗传状况的影响。我们从 307 个粪便样本中提取了 DNA,并分析了 179 个野生个体的微卫星多样性、性别识别基因和 mtDNA 控制区。我们的分析表明,灰鼻猴在大约两万年前的末次冰川极盛时期经历了最初的种群数量下降。在过去的 70 年中,该物种经历了第二次更严重的种群下降,与人类活动同时发生。它们目前的有效种群数量(± SD)为 675 ± 292,超过了种群的剩余数量,在过去的 2 万年间下降了 93.9%-96.7% 。我们的研究结果突出表明,有必要立即采取保护和管理策略,以保护这一特有的极度濒危灵长类物种。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Population Viability and Genetic Structure of the Last Remaining Population of the Critically Endangered Gray Snub-Nosed Monkey (Rhinopithecus brelichi)

Population Viability and Genetic Structure of the Last Remaining Population of the Critically Endangered Gray Snub-Nosed Monkey (Rhinopithecus brelichi)

Habitat destruction, land conversion, and forest fragmentation over the past several decades have resulted in major declines and local extirpation of wild animal and plant species. The gray snub-nosed monkey (Rhinopithecus brelichi) is currently listed among the 25 most endangered primate species in the world, with an estimated remaining wild population of less than 400 individuals. Given the potential negative effects of small population size on genetic diversity, we investigated how factors, such as climate, inbreeding, kinship, population structure, and effective population size, have contributed to their genetic status. We extracted DNA from 307 fecal samples and analyzed microsatellite diversity, sex-identifying genes, and the mtDNA control region in 179 wild individuals. Our analyses suggest that gray snub-nosed monkeys experienced an initial population decline during the Last Glacial Maximum, some 20,000 years ago. During the past 70 years, this species experienced a second, steeper population decline, coinciding with human activities. Their current effective population size (± SD) of 675 ± 292 exceeds the remaining number of individuals in the population and has declined by 93.9%—96.7% over the past 20,000 years. Our findings highlight the need for immediate conservation and management strategies to protect this endemic and Critically Endangered primate species.

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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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