Dissertation Research: Molecular Systematics of the Genus Presbytis

论文研究：长叶草属的分子系统学

• 批准号: 9812726
• 负责人: Don Melnick
• 金额: $ 1.01万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-05-15 至 2001-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9812726&HistoricalAwards=false
• 关键词: Dissertation; Research; Molecular; Systematics; Genus

Recently, what was once considered one highly variable genus of "leaf-eating" or colobine monkeys in Asia, known as Presbytis, was subdivided into three genera on the basis of different sets of shared anatomical features. The separation of these three genera, Presbytis, Trachypithecus, and Semnopithecus, are now widely accepted by the primatology community. However, questions remain as to (1) whether they are "good" genera, that is each contains a series of species all derived from a common ancestor that is separate from the common ancestors of the other related genera, and (2) what the relationships are among the species within each newly defined genus. The proposed research attempts to answer these questions for one of the new genera, Presbytis. Biological samples will be collected from a number of populations of each of the seven species in this genus. Nuclear and mitochondrial DNA will be isolated from these samples and surveyed for variation. This variation will be used to assess (1) whether each Presbytis species is indeed one species, (2) whether the Presbytis genus is indeed one genus, (3) the relationship of the Presbytis species to one another, and (4) the relationship of the Presbytis genus to the other Asian Leaf-monkey genera. Answers to all of these questions will give us insight into the evolutionary history of this very diverse group of primates, and the differential ability of variation in the nuclear and mitochondrial DNA to shed light on that history. Secondarily, it will also give us information that can be used to conserve these highly endangered mammals.

最近，曾经被认为是亚洲高度变异的“食叶猴”属或疣猴属，即“长老猿”，根据不同的共同解剖特征被细分为三个属。 长鼻猴属、粗猿属和长颈猿属这三个属的分离现已被灵长类动物界广泛接受。 然而，仍然存在以下问题：（1）它们是否是“好”属，即每个属都包含一系列物种，所有物种都源自与其他相关属的共同祖先不同的共同祖先，以及（2）每个新定义的属内的物种之间的关系是什么。 拟议的研究试图回答新属之一——长老猿属（Presbytis）的这些问题。 生物样本将从该属七个物种中每个物种的多个种群中采集。 将从这些样本中分离出核 DNA 和线粒体 DNA 并进行变异调查。 这种变异将用于评估（1）每个长老猿物种是否确实是一个物种，（2）长老猿属是否确实是一个属，（3）长老猿物种之间的关系，以及（4）长老猿属与其他亚洲叶猴属的关系。 所有这些问题的答案将使我们深入了解这个非常多样化的灵长类动物群体的进化历史，以及核和线粒体 DNA 变异的差异能力，以阐明这段历史。 其次，它还将为我们提供可用于保护这些高度濒危哺乳动物的信息。