NSFGEO-NERC: Collaborative Research: The first actinopterygian ‘adaptive radiation’: integrating fossils, function and phylogeny to illuminate innovation in a post-extinction w

NSFGEO-NERC：合作研究：第一个放线虫“适应性辐射”：整合化石、功能和系统发育以阐明灭绝后世界的创新

• 批准号: 2218892
• 负责人: Michael Coates
• 金额: $ 11.5万
• 依托单位: University of Chicago
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-09-01 至 2025-08-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2218892&HistoricalAwards=false
• 关键词: NSFGEO; NERC; Collaborative; Research; first

Ancient mass extinctions resulted in the loss of many species but also provided new opportunities for surviving groups. Study of these events is central to both understanding the origin of today’s biological diversity as well as contextualizing the threats it faces from environmental change. This work focuses on a major interval of crisis and recovery that took place around 360 million years ago: the Devonian/Carboniferous extinction. This study will determine the impact of this event on the early history of ray-finned fishes, key components of today’s aquatic ecosystems and a major commercial resource. The project will provide training at high school, undergraduate, graduate, and postgraduate levels, and develop educational materials for wide audiences, including those underrepresented in STEM fields. Outreach includes a module for high-school students at the University of Michigan, programs at three museums with a combined annual attendance of greater than 500,000, and resources for use in local communities. This work will examine the role of the Devonian/Carboniferous extinction (359 Ma) in precipitating an apparent explosion of diversity among actinopterygians, setting the stage for the group’s dominance throughout the remainder of the Phanerozoic. The project will combine microCT, functional anatomy, 3D morphometrics, combined-evidence phylogenetic inference, and evolutionary comparative methods to Devonian and Carboniferous (419-299 Ma) actinopterygians. The project team will: (i) quantify discrete functional innovations, biomechanics, and shape for mandibles to test for increased functional and morphological diversity following a mass extinction; (ii) integrate anatomical, stratigraphic, and molecular data in a Bayesian framework to develop an inclusive hypothesis of early actinopterygian relationships and test hypotheses about the timing of evolutionary divergences and patterns of survival across the extinction boundary; and (iii) combine functional and morphological data with new phylogenetic hypotheses within a comparative framework in to test for shifts in evolutionary rate and mode among actinopterygians associated with the Devonian/Carboniferous extinction.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

研究事件是当今生物多样性的起源，以及在大约36000万年前使用的环境变化的线索。关于射线灌输的早期历史，当今的水生生态系统的关键组成部分和主要的商业资源在博物馆中，年度大于500,000多人，以及在当地社区中使用的资源。该项目与Microct，3D形态计量学，Com Bind-bind-bind-com-ben-ben-demen发育推论的结合：（i）分散功能创新，生物力学，生物力学和形状关于进化差异的时机和整个扩展的生存模式的假设；灭绝。