Morphology of the Anterior Vertebral Regions and Otophysic Systems of Clupeomorphs and Ostariophysans, with Phylogenetic Implications for the Clueocephala

Clupeomorphs 和 Ostariophysans 的前椎区域和耳生理系统的形态学，对 Clueocephala 的系统发育意义

• 批准号: 9903533
• 负责人: Terry Grande
• 金额: $ 6.71万
• 依托单位: Loyola University of Chicago
• 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: 1999-09-01 至 2003-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9903533&HistoricalAwards=false
• 关键词: Morphology; Anterior; Vertebral; Regions; Otophysic

9903533Grande and dePinnaThe overall goal of this project is to examine the historical relationship between the Clupeomorpha (e.g., herrings and anchovies) and the Ostariophysi (e.g., carps, minnows, catfishes) with some intriguing new character information. We will conduct a comparative study focusing on the anterior vertebral-otophysic complexes of these fishes. Our rationale for examining the anterior vertebral regions of these fishes is that, from our preliminary investigations, and from those of other researchers, this region appears to be a source of phylogenetic information potentially fundamental to understanding the relationships of several major clupeocephalan groups. One important fish group that we will focus on is the Pristigasteroidea. This is an important group scientifically because it appears to have the diagnostic clupeiform mechanics used to enhance near-field hearing. Further, the skeletal modifications are strikingly similar to those used by ostariophysans to transmit high frequency sound vibrations. The Pristigasteroidea may thus hold the key to understanding the origin of clupeomorphs and ostariophysans, two of the largest fish groups in existence today. If clupeomorphs and ostariophysans are related, then so, too, are their otophysic modifications. In this study the P.I.s will survey all genera of pristigasteroid fishes for modifications of the anterior vertebrae-gasbladder complex, and describe this morphology in detail for the first time. We will survey and examine representatives of all major clupeomorph subgroups for modifications of the anterior vertebral column as seen in pristigasteroids, and to assess their anterior vertebral modifications. They will construct a data matrix of their findings based on their survey of clupeomorph and ostariophysan taxa. As a test of character congruence, and to truly test the monophyly of Clupeomorpha, this new character set will be added to those characters already proposed in the literature and analyzed cladistically.

9903533Grande 和 dePinna 该项目的总体目标是通过一些有趣的新特征信息来研究 Clupeomorpha（例如鲱鱼和凤尾鱼）和 Ostariophys（例如鲤鱼、米诺鱼、鲶鱼）之间的历史关系。我们将针对这些鱼类的前椎骨-耳物理复合体进行比较研究。 我们检查这些鱼类的前椎区域的理由是，根据我们的初步调查和其他研究人员的调查，该区域似乎是系统发育信息的来源，对于理解几个主要的鲱鱼类群的​​关系可能至关重要。 我们将重点关注的一个重要鱼类群体是 Pristigasteroidea。 从科学角度来看，这是一个重要的群体，因为它似乎具有用于增强近场听力的诊断鲽形力学。 此外，骨骼的修改与骨科动物用来传递高频声音振动的骨骼修改惊人地相似。 因此，Pristigasteroidea 可能掌握着了解当今现存最大的两个鱼类群体——鲽鱼和骨鱼起源的关键。 如果鲽形目和骨骺目有相关性，那么它们的耳生理修饰也有相关性。 在这项研究中，PI 将调查所有属的 pristigasteroid 鱼类的前椎骨-气囊复合体的变化，并首次详细描述这种形态。我们将调查和检查所有主要clupeomorph亚组的代表，以了解在pritigasteroids中所见的前椎体改变，并评估其前椎体改变。他们将根据对鲫鱼和骨藻类群的调查构建一个数据矩阵。 作为字符一致性的测试，并真正测试 Clupeomorpha 的单系性，这个新的字符集将添加到文献中已经提出并进行分支分析的字符中。