DISSERTATION RESEARCH: Sexual signal variation within and between populations of an incipiently speciating lizard

论文研究：早期物种形成蜥蜴种群内部和种群之间的性信号变异

• 批准号: 1110497
• 负责人: Barry Sinervo
• 金额: $ 1.45万
• 依托单位: University of California-Santa Cruz
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-06-01 至 2013-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1110497&HistoricalAwards=false
• 关键词: DISSERTATION; RESEARCH; Sexual; signal; variation

Variation is key to evolution. Differences between individuals within a population, between populations of the same species, and between closely related species represent successive stages in the formation of new species. Ph.D. student Elizabeth Bastiaans and Dr. Barry Sinervo will study individual, population and between species variation in the mesquite lizard species complex, a Mexican lizard whose evolutionary relationships are not yet fully understood. The mesquite lizard inhabits the mountains of central and northern Mexico, an environment that is changing rapidly due to both climate change and increasing urbanization. Ms. Bastiaans and Dr. Sinervo?s work with these lizards will help illuminate how new species form and adapt to the environment. Within populations, the lizards vary in the color of brightly pigmented patches used in mating and aggressive interactions. Between populations and closely related species, the lizards vary in coloration, habitat use, and genetic characteristics. The researchers will use field surveys, behavioral experiments, and molecular tools to address how ecology, behavior, and genetics contribute to divergence between populations in the mesquite lizard. The results of the research will shed light on which populations are most vulnerable to decline or extinction due to climate change and/or habitat loss. This work fosters collaboration between the United States and Mexico on problems that show no respect for borders, and it provides opportunities to train and educate high school and college students from both nations.

变化是进化的关键。 人群中的个体之间的差异，同一物种的种群之间以及密切相关的物种之间的差异代表了新物种形成的连续阶段。 博士学生伊丽莎白·巴斯蒂亚（Elizabeth Bastiaans）和巴里·辛沃（Barry Sinervo）博士将研究个体，种群以及豆科灌木蜥蜴物种综合体的物种变化，这是一种墨西哥蜥蜴，其进化关系尚未完全了解。 豆科灌木蜥蜴居住在墨西哥中部和北部的山脉，由于气候变化和城市化的增加，这种环境正在迅速变化。 巴斯蒂亚安斯女士和西尔沃博士与这些蜥蜴一起工作将有助于阐明新物种如何形成并适应环境。 在种群中，蜥蜴在交配和侵略性相互作用的色素色素色素的颜色上有所不同。 在人群和密切相关的物种之间，蜥蜴的着色，栖息地使用和遗传特征有所不同。 研究人员将使用现场调查，行为实验和分子工具来解决生态，行为和遗传学如何在豆科灌木蜥蜴中造成种群之间的差异。 该研究的结果将阐明由于气候变化和/或栖息地丧失，人口最容易下降或灭绝。 这项工作促进了美国和墨西哥之间关于不尊重边界的问题的合作，并提供了培训和教育来自两国的高中和大学生的机会。