DISSERTATION RESEARCH: The Effects of Genetic Structure on Phenotypic Adaptation in South American Annual Killifishes

论文研究：遗传结构对南美一年生鳉鱼表型适应的影响

• 批准号: 9623578
• 负责人: Allan Larson
• 金额: $ 1.12万
• 依托单位: Washington University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-07-15 至 1998-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9623578&HistoricalAwards=false
• 关键词: DISSERTATION; RESEARCH; Effects; Genetic; Structure

9623578 Larson Geographic structuring of a group of South American annual fishes which inhabit seasonally wet environments will be analyzed using variation in mitochondrial DNA sequences. Hypotheses that phenotypic variation is correlated with molecular genetic variation, and that local adaptation to extant environments explains distributional patterns of variation in life history traits will be tested. By studying the distribution of molecular genetic variation in a statistically rigorous manner, it will be possible to determine whether phenotypic differences among populations reflect historical events or current local adaptations. Research funded by this award should improve the understanding of factors responsible for survival in environments experiencing rapid, often stochastic fluctuations. Results will also have potentially broad applied significance. Under normal conditions, temporary bodies of water become a breeding ground for mosquitoes; thus killifish, due to their unique ability to survive complete desiccation of their habitat, have been lauded as the ideal mosquito control agents. By understanding which populations are most likely to succeed in a given habitat, it will be possible to maximize the benefits of killifish as successful mosquito control agents.

小行星9623578 一组南美洲一年生鱼类栖息季节性潮湿的环境中的地理结构将使用线粒体DNA序列的变化进行分析。 假设表型变异与分子遗传变异相关，以及对现存环境的局部适应解释了生活史性状变异的分布模式，将进行检验。 通过以统计学上严格的方式研究分子遗传变异的分布，将有可能确定种群之间的表型差异是否反映了历史事件或当前的地方适应。 由该奖项资助的研究应该提高对在经历快速，往往是随机波动的环境中生存的因素的理解。 研究结果也将具有潜在的广泛应用意义。 在正常情况下，临时的水体成为蚊子的滋生地;因此，由于它们独特的生存能力，它们的栖息地完全干燥，被誉为理想的蚊子控制剂。 通过了解哪些种群最有可能在给定的栖息地取得成功，将有可能最大限度地发挥鳉鱼作为成功的蚊子控制剂的好处。