Quantifying the Role of Pollinator Mediated Selection in the Evolution of Pollination Syndromes in Silene (Caryophyllaceae)

量化授粉媒介介导的选择在石竹（石竹科）授粉综合症进化中的作用

• 批准号: 0108285
• 负责人: Charles Fenster
• 金额: --
• 依托单位: University of Maryland, College Park
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-09-15 至 2008-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0108285&HistoricalAwards=false
• 关键词: Quantifying; Role; Pollinator; Mediated; Selection

This project will quantify whether flower traits such as shape, color, scent, floral display, and nectar rewards reflects an adaptive response by plants to specific animals pollinators. Three Silene species (carnation family) will be investigated that differ in flower traits and a priori appear to be adapted to different types of animal pollinators, including bees, moths and hummingbirds. Through observations and manipulations we will determine how important different pollinators are to the reproductive success of each species and whether a particular group of pollinators actually selects for the present suite of floral traits found in each of the three species.The goal of the project is to understand the role of pollinators in promoting floral diversity in the plant kingdom. For example, flowers visited by hummingbirds are generally red, scentless and flower during the day, while moth pollinated flowers are often white, richly fragrant and open at night. Thus we hope to quantify whether hummingbirds and moths favor plants that have greater expression of traits associated with either hummingbird or moth pollination and whether this leads to greater reproductive success of the plants. Whether we find that a species is successfully pollinated by many types of animals or only by specific pollinators will have conservation implications. In the former scenario, the loss of animals may decrease plant reproductive success. However, in the later case, the loss of specific pollinators my result in the loss of a plant species.

该项目将量化花的性状，如形状，颜色，气味，花卉展示和花蜜奖励是否反映了植物对特定动物授粉者的适应性反应。三个Silene物种（康乃馨家庭）将进行调查，不同的花性状和先验似乎是适应不同类型的动物授粉，包括蜜蜂，飞蛾和蜂鸟。通过观察和操作，我们将确定不同的传粉者对每个物种的繁殖成功有多重要，以及一个特定的传粉者群体是否真的选择了这三个物种中每一个物种的花特征。该项目的目标是了解传粉者在促进植物王国花多样性方面的作用。例如，蜂鸟访问的花朵通常是红色的，没有气味，在白天开花，而飞蛾授粉的花朵通常是白色，香气浓郁，在晚上开放。因此，我们希望量化蜂鸟和飞蛾是否喜欢那些与蜂鸟或飞蛾授粉相关的性状表达更高的植物，以及这是否会导致植物更大的繁殖成功。无论我们发现一个物种是被许多类型的动物成功授粉，还是只被特定的传粉者成功授粉，都会对保护产生影响。在前一种情况下，动物的损失可能会降低植物繁殖的成功率。然而，在后一种情况下，特定传粉者的丧失可能导致植物物种的丧失。