Physiological Genetic Basis of Metamorphic Timing in a Urodele

有尾鱼变态时间的生理遗传基础

• 批准号: 0080112
• 负责人: Stephen Voss
• 金额: $ 1.5万
• 依托单位: Colorado State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-08-15 至 2001-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0080112&HistoricalAwards=false
• 关键词: Physiological; Genetic; Basis; Metamorphic; Timing

The majority of organisms experience life in two distinct habitats as a result of undergoing a metamorphosis during ontogeny. The timing of metamorphosis is an ecologically important event because there are costs and benefits associated with the relative duration of the larval verses adult phase. Although much is known about the ecological and evolutionary significance of metamorphic timing, very little is known about the underlying mechanisms that contribute to variation in metamorphic timing. The proposed project would characterize the physiological genetic basis of variation in metamorphic timing using a model urodele system. The salamanders to be used are crosses and back-crosses of Ambystoma that differ in whether they undergo metamorphosis. These crosses, made with prior NSF support, required years to develop. This is a small award to maintain the salamander colony for a year, while the proposal for the research project is revised and resubmitted.

由于在个体发育过程中经历了蜕变，大多数生物在两个不同的生境中经历了生命。变态的时间是一个生态上重要的事件，因为与幼虫和成虫阶段的相对持续时间相关的成本和收益。虽然人们对变质计时的生态和进化意义了解很多，但对导致变质计时变化的潜在机制却知之甚少。拟议的项目将使用一个模型urodele系统来表征变质时间变化的生理遗传学基础。将使用的火蜥蜴是Ambystoma的杂交和回交，它们是否经历变态是不同的。这些由NSF以前支持的十字架需要数年时间才能开发出来。这是一个维持火蜥蜴栖息地一年的小奖励，同时研究项目的提案会被修改并重新提交。