Postdoctoral Research Fellowship in Biosciences Related to the Environment for FY 1998

这项行动资助了1998年NSF与环境相关的生物科学博士后研究奖学金。该奖学金为研究员提供了一个获得博士学位之外的额外科学培训的机会，并在美国国家科学基金会生物科学理事会支持的任何生物学领域中，在分子、细胞、有机体、种群、群落和/或生态系统层面上，对生物与其环境之间相互作用的基本机制进行创新和富有想象力的研究。每个奖学金支持在赞助实验室进行的研究和培训计划。本奖学金的研究和培训计划题为“Mimulus guttatus物种复合体交配系统分化的遗传机制和后果：适应性进化的案例研究”。这个项目解决了在适应进化中起主要作用的基因的作用和相互作用的基本问题。基于数量性状位点（qtl）连锁图谱的渗入线将用于估计对拟鹃花形态、交配行为和适合度的直接和上位性影响。在大多数交配系统进化模型中，雄性适合度的测量定义了自我传递优势的遗传约束。该研究还通过测量不同分类群之间的生殖隔离来评估观察到的遗传结构对物种形成过程的影响。

Abstract DBI-9804122 Lila Fishman This action funds an NSF Postdoctoral Research Fellowship in Biosciences Related to the Environment for 1998. This fellowship provides an opportunity for the Fellow to gain additional scientific training beyond the doctoral degree and to pursue innovative and imaginative research into the fundamental mechanisms underlying the interactions between organisms and their environment at the molecular, cellular, organismal, population, community and/or ecosystem level in any area of biology supported by the Directorate for Biological Sciences of the National Science Foundation. Each fellowship supports a research and training plan to be carried out in a sponsoring laboratory. The research and training plan for this fellowship is entitled genetic mechanisms and consequences of mating system divergence in the Mimulus guttatus species complex: a case study of adaptive evolution. This project addresses fundamental questions about the action and interaction of genes of major effect in adaptive evolution. Introgression lines based on a linkage map of quantitative trait loci (QTLs) involved in mating system divergence in Mimulus will be used to estimate direct and epistatic effects on floral morphology, mating behavior, and fitness. Measures of male fitness define the genetic constraints on the selfer transmission advantage assumed by most models of mating system evolution. The research also evaluates the impact of the observed genetic architecture on the speciation process by measuring reproductive isolation between divergent taxa.