REPRODUCTIVE ISOLATION WITHIN SPECIES AS A CONSEQUENCE OF GEOGRAPHIC VARIATION IN COMMUNITY INTERACTIONS IN CHORUS FROGS

合唱蛙群落互动的地理变化导致物种内的生殖隔离

• 批准号: 1120516
• 负责人: Emily Lemmon
• 金额: $ 69.93万
• 依托单位: Florida State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-09-01 至 2016-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1120516&HistoricalAwards=false
• 关键词: REPRODUCTIVE; ISOLATION; WITHIN; SPECIES; CONSEQUENCE

Reproductive interactions constitute a potentially powerful force driving the evolution of mating behaviors, particularly when species interact with different combinations of other species across geography. Theory predicts that if the various species that constitute the local community vary across the range of a particular species, different populations of that species may experience pressure to evolve different mating behaviors. This diversifying selection may cause the rapid divergence of populations within a species as males evolve different signals across populations and females evolve preferences for local signals. The purpose of this project is to determine whether geographic variation in the species that constitute the local community has caused a particular frog species to evolve into multiple distinct species through direct selection on reproductive traits. This work will be accomplished by integrating behavioral experiments, genetic data, and ecological studies throughout the distribution of the study species.This research represents one of the first empirical tests of theoretical predictions that reproductive interactions among different species can cause diversification within a particular species. This phenomenon is a cryptic but potentially widespread mechanism of speciation. The project supports the training of a postdoctoral researcher, graduate students, and undergraduate students in a diversity of biological fields and technologies. Two important components of this work are a biology outreach program to home-schooled students and a public outreach program to monitor the health of local amphibian populations.

生殖相互作用构成了推动交配行为进化的潜在强大动力，特别是当物种与地理上其他物种的不同组合相互作用时。理论预测，如果组成当地群落的各种物种在特定物种的范围内有所不同，该物种的不同种群可能会面临进化出不同交配行为的压力。这种多样化的选择可能会导致物种内种群的快速分化，因为雄性在不同种群中进化出不同的信号，而雌性进化出对局部信号的偏好。这个项目的目的是确定构成当地群落的物种的地理变异是否导致特定的青蛙物种通过对生殖特征的直接选择而进化成多个不同的物种。这项工作将通过整合整个研究物种分布的行为实验、遗传数据和生态学研究来完成。这项研究是对不同物种之间的生殖互动可以导致特定物种内多样性的理论预测的首批经验检验之一。这种现象是一种神秘但可能广泛存在的物种形成机制。该项目支持对一名博士后研究员、研究生和本科生进行各种生物领域和技术方面的培训。这项工作的两个重要组成部分是针对在家接受教育的学生的生物推广计划和监测当地两栖动物种群健康的公共推广计划。