Collaborative Research: Molecular Systematics of the Avian Order Gruiformes

合作研究：鸟类鹤形目分子系统学

• 批准号: 0108568
• 负责人: Peter Houde
• 金额: $ 22.5万
• 依托单位: New Mexico State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-08-15 至 2005-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0108568&HistoricalAwards=false
• 关键词: Collaborative; Research; Molecular; Systematics; Avian

DEB-0108568Peter W. HoudeA collaborative grant has been awarded to Dr. Peter Houde at New Mexico State University and Dr. Carey Krajewski at Southern Illinois University to determine the genealogy of one of the most diverse groups of birds known, the Order Gruiformes. Genealogical relationships of families within the order will be assessed by comparing DNA sequences of several genes. Past patterns of anatomical divergence and geographic origins will be inferred from the pattern by which characteristics of living species have changed genealogically. The ages of major groups will be estimated from levels of difference between their DNA sequences. Individual genes and anatomical characters can provide misleading information about genealogy because of "convergence", so gruiform genealogy will be reconstructed from a large body of independent data, all of which will be evaluated for its consistency with the rest. Subsets of the data that are inconsistent will be scrutinized for functional and developmental correlates. This, in turn, will elucidate processes of convergence between lineages, both at the level of genes and that of anatomy. Gruiformes have singular importance in understanding the timing and geography of bird origins in general, because they are extremely diverse and geographically widespread. Many families appear to be relics of the long bygone Age of Dinosaurs when the continents were arranged quite differently than they are today. Gruiforms present many examples of convergence, providing an unparalleled opportunity for studying the processes that cause it. There is probably no other group of vertebrate animals whose relationships are so poorly understood, yet for which there is a comparable wealth of data on anatomical characteristics. There is also preliminary evidence for convergence at the genetic level, a phenomenon that has barely even been acknowledged in previous research. Thus, this group presents a truly unique opportunity for understanding the correlation between genetic and morphological change through time.

DEB-0108568PETER W. HODEA合作赠款已授予新墨西哥州立大学的Peter Houde博士和南伊利诺伊大学南部的Carey Krajewski博士，以确定已知最多样化的鸟类的家谱，该组织已知，Gruuiformes命令。 家族在顺序中的族谱关系将通过比较几种基因的DNA序列来评估。 解剖学差异和地理起源的过去模式将是根据生物特征在族谱上改变的模式来推断的。主要组的年龄将从其DNA序列之间的差异水平估计。 单个基因和解剖学特征可以因为“融合”而提供有关家谱的误导性信息，因此将从大量独立数据中重建Gruiorder Genealogy，所有这些都将以与其余的一致性进行评估。 不一致的数据子集将被仔细检查以进行功能和发育相关性。 反过来，这将在基因和解剖学水平上阐明谱系之间的收敛过程。 Gruiformes在理解一般的鸟类起源的时机和地理方面具有至关重要的重要性，因为它们在地理上非常多样化和地理广泛。 当大洲的安排与今天完全不同时，许多家庭似乎是恐龙漫长时代的遗物。 Gruiforms提供了许多融合的例子，为研究引起它的过程提供了无与伦比的机会。可能没有其他脊椎动物的脊椎动物，它们的关系知之甚少，但对于解剖学特征有可比的数据。 在遗传水平上也有收敛的初步证据，这种现象在先前的研究中几乎没有得到认可。 因此，该群体提供了一个真正独特的机会，可以随着时间的流逝理解遗传和形态变化之间的相关性。