NSF Minority Postdoctoral Research Fellowship for FY 2009

2009 财年 NSF 少数族裔博士后研究奖学金

• 批准号: 0905898
• 负责人: Gabriel Rivera
• 金额: --
• 依托单位: Rivera Gabriel
• 依托单位国家: 美国
• 项目类别: Fellowship
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-01-01 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0905898&HistoricalAwards=false
• 关键词: NSF; Minority; Postdoctoral; Research; Fellowship

This action funds an NSF Minority Postdoctoral Research Fellowship for FY 2009. The fellowship supports a research and training plan in a host laboratory for the Fellow who also presents a plan to broaden participation in biology. The title of the research and training plan for this fellowship to Gabriel Rivera is "The evolution of morphological divergence in semi-aquatic freshwater turtles inhabiting slow and fast-flowing aquatic habitats." This research is being conducted at Iowa State University under the sponsorship of Dr. Dean Adams.Species that inhabit a wide range of environments frequently display divergent morphologies that correlate with differences in specific ecological parameters. The velocity of water flow has been shown to influence morphology in a broad range of aquatic organisms. While the evolutionary processes that have produced these patterns have been examined for several species of fully aquatic organisms (e.g., fishes), how evolution produces these patterns in semi-aquatic vertebrates remains largely unexamined. The use of terrestrial and aquatic habitats makes freshwater turtles an excellent system for addressing such questions. The North American freshwater turtle Pseudemys concinna is composed of two distinct geographic lineages; those inhabiting Atlantic drainages and those inhabiting Gulf drainages. Turtles in both lineages inhabit a wide range of slow and fast-flowing environments, and differences in morphology that correlate with different flow velocities have been identified in the one lineage (Gulf) studied to date. This project is determining (1) the contribution of genetic and environmental factors in producing the morphological differences observed between slow and fast-flowing environments, and (2) whether differences in water flow produce the same morphological differences in both geographic lineages. This research provides additional understanding of how morphological diversity can result from evolutionary adaptations to different environments. Training plans include developing new skills by combining analytical procedures for examining patterns of morphological variation, mathematical techniques for quantifying organismal shape, and statistical methods. Additionally, this project provides laboratory and field research opportunities for undergraduates and increases the participation of underrepresented groups in science.

这项行动为2009财政年度的NSF少数民族博士后研究奖学金提供资金。该研究金支持研究员在东道实验室的研究和培训计划，研究员还提出了扩大生物学参与的计划。加布里埃尔里维拉的研究和培训计划的标题是“半水生淡水龟栖息在缓慢和快速流动的水生栖息地的形态分歧的演变。“这项研究是在爱荷华州州立大学的迪安亚当斯博士的赞助下进行的。栖息在各种环境中的物种经常表现出与特定生态参数差异相关的不同形态。 水流的速度已被证明会影响广泛的水生生物的形态。 虽然已经对几种完全水生生物（例如，鱼类），进化如何产生这些模式在半水生脊椎动物仍然在很大程度上没有研究。 利用陆地和水生栖息地使淡水龟成为解决这些问题的一个很好的系统。 北美淡水龟Pseudemys concinna由两个不同的地理谱系组成;那些居住在大西洋流域和那些居住在海湾流域。 海龟在这两个谱系居住在广泛的缓慢和快速流动的环境，并在形态上的差异，与不同的流速已被确定在一个谱系（海湾）研究的日期。 该项目正在确定（1）遗传和环境因素在产生慢速和快速流动环境之间观察到的形态差异方面的作用，以及（2）水流的差异是否在两种地理谱系中产生相同的形态差异。 这项研究提供了额外的理解形态多样性如何导致进化适应不同的环境。培训计划包括通过结合分析程序来研究形态变化的模式，量化生物体形状的数学技术和统计方法来开发新技能。此外，该项目为本科生提供实验室和实地研究机会，并增加了科学中代表性不足的群体的参与。