稀有啮齿动物 Rhagomys 属(啮齿目,Sigmodontinae):生物地理模式和一个新物种的描述

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-09-13 DOI:10.1007/s13364-024-00766-x
C. R. Bonvicino, C. Pires, R. O. Lanes, M. B. Faria
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引用次数: 0

摘要

Rhagomys 是南美洲一种罕见的 Sigmodontinae 啮齿动物,包括三个已知物种:R. rufescens、R. longilingua 和 R. septentrionalis。这些品系的地理分布十分奇特且互不相连,主要分布在安第斯山脉和大西洋森林的林区。这些地区目前被南美洲的塞拉多(Cerrado)和查科(Chaco)两个开放植被生物群落分隔开来。尽管最近开展了一些研究,但动物学收藏的 Rhagomys 标本数量的减少仍是限制人们更好地系统了解 Rhagomys 的主要因素。在此,我们汇编了文献中的数据,并基于综合方法分析了一个全面的样本,以描述一个显然仅限于巴西大西洋森林的 Rhagomys 新物种。这个新物种是通过一系列形态特征、DNA同源物及其核型诊断出来的。系统发生学分析表明,该新物种与大西洋森林中的同属物种Rhagomys rufescens是姊妹物种,与安第斯山脉的物种不同,表明安第斯山脉与大西洋森林之间目前存在分离。
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The rare rodent genus Rhagomys (Rodentia, Sigmodontinae): biogeographical patterns and description of a new species

Rhagomys is a rare Sigmodontinae rodent from South America that includes three known species: R. rufescens, R. longilingua, and R. septentrionalis. These lineages have an intriguing and disjunct geographic distribution, occurring in forest areas in the Andes and Atlantic Forest. These regions are currently separated by the Cerrado and Chaco, two biomes of open vegetation in South America. Despite recent studies, the reduced number of Rhagomys specimens in zoological collections is the main limiting factor for its better systematic understanding. Here, we compile data from the literature and analyze a comprehensive sampling based on an integrative approach to describe a new Rhagomys species, apparently restricted to the Brazilian Atlantic Forest. This new species is diagnosed by a suite of morphological characters, DNA synapomorphies, and its karyotype. Phylogenetic analyses place the new form as sister of the Rhagomys rufescens, its congeneric species from the Atlantic Forest, and apart from the Andean species, showing a current separation between the Andes and the Atlantic Forest lineages.

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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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