Theoretical Framework of the Adaptive Evolution of Premating Isolation

交配前隔离适应性进化的理论框架

• 批准号: 0108411
• 负责人: Maria Servedio
• 金额: $ 19.19万
• 依托单位: University of California-Davis
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-09-01 至 2002-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0108411&HistoricalAwards=false
• 关键词: Theoretical; Framework; Adaptive; Evolution; Premating

There are still large gaps in our knowledge of how new species form. One of the critical stages of speciation may often be the development of mating preferences that prevent interbreeding between members of diverging populations. Servedio and Turelli are using a series of mathematical models to systematically examine the roles that a number of proposed factors may play in driving this preference evolution. They will assess the importance of several mechanisms that lower the number of healthy and fertile offspring produced by pairs of hybridizing individuals. Emerging species may also occupy divergent habitats in which different traits may contribute to survival. The role of this phenomenon in driving speciation will also be assessed.By concentrating on the consequences of contact between populations that are in the process of speciating, this project will help to elucidate what mechanisms produce and maintain biological diversity. The exploration of these processes also has implications for the conservation of this diversity. As human disturbance erodes barriers and alters species ranges, it is becoming increasingly essential to understand the conditions that promote species divergence versus extinction in the face of new contacts between closely related species.

我们对新物种的形成方式仍然存在很大的差距。 物种形成的关键阶段之一可能通常是交配偏好的发展，这些偏好阻止人群分歧人之间的杂交。 Serveio和Turelli使用一系列数学模型来系统地检查拟议因素可能在推动这种偏好演化中起作用的作用。 他们将评估几种机制的重要性，这些机制降低了成对杂交个体产生的健康和肥沃后代的数量。 新兴物种也可能占据不同的栖息地，其中不同的特征可能有助于生存。 该现象在驾驶物种形成中的作用也将得到评估。通过专注于规范过程中人群之间接触的后果，该项目将有助于阐明哪些机制产生了哪些机制并维持生物学多样性。 对这些过程的探索也对保护这种多样性有影响。 随着人类干扰侵蚀障碍和变化物种范围，了解促进物种差异与灭绝的条件在面对紧密相关的物种之间的新接触中变得越来越重要。