Dissertation Research: Speciation and Underlying Processes in Graptemys

论文研究：笔龟的物种形成和潜在过程

• 批准号: 0508665
• 负责人: Fredric Janzen
• 金额: $ 1.2万
• 依托单位: Iowa State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-06-01 至 2008-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0508665&HistoricalAwards=false
• 关键词: Dissertation; Research; Speciation; Underlying; Processes

Since Darwin, scientists have continually inquired about the formation of species and their maintenance or breakdown via hybridization. This project addresses recent mechanistic theories and their applicability to a natural species complex. Research will focus on speciation, mechanisms that maintain the integrity of species, and courtship in one of the most species rich groups of turtles (map turtles). Facial color pattern differences are thought to be a key element in species identification and mate choice. The investigators will examine the interplay of genetics, morphology, and behavior, particularly as they relate to the origins and maintenance of species.The broader goals of this project are 1) to determine the historical relationships of the turtle species in this group, 2) to identify the role of facial color pattern in species identification and courtship, and 3) to evaluate the extent to which facial color pattern has played a role in forming new species. These goals will be addressed using an integrative study combining field and laboratory methods to generate a stronger, broader understanding of speciation and hybridization. The multi-faceted nature of this project provides an important opportunity to mentor undergraduates (including underrepresented groups and women) in both field and laboratory settings.

自达尔文以来，科学家们不断探究物种的形成及其通过杂交的维持或分解。该项目探讨了最新的机械理论及其对自然物种复合体的适用性。 研究将集中于物种形成、维持物种完整性的机制以及物种最丰富的海龟群体之一（地图龟）的求爱。面部颜色图案差异被认为是物种识别和配偶选择的关键因素。研究人员将研究遗传学、形态学和行为之间的相互作用，特别是当它们与物种的起源和维持有关时。该项目的更广泛目标是 1) 确定该群体中海龟物种的历史关系，2)确定面部颜色模式在物种识别和求偶中的作用，以及3）评估面部颜色模式在形成新物种中发挥作用的程度。这些目标将通过结合现场和实验室方法的综合研究来实现，以对物种形成和杂交产生更强大、更广泛的理解。该项目的多方面性质为在现场和实验室环境中指导本科生（包括代表性不足的群体和女性）提供了重要的机会。