Dissertation Research: Fitness Consequences of Floral Nectar Production Rate for the Hummingbird-Pollinated Plant Ipomopsis aggregata

论文研究：蜂鸟授粉植物 Ipomopsis aggregata 的花蜜生产率的适应性影响

• 批准号: 9001307
• 负责人: Nickolas Waser
• 金额: $ 0.31万
• 依托单位: University of California-Riverside
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-06-01 至 1991-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9001307&HistoricalAwards=false
• 关键词: Dissertation; Research; Fitness; Consequences; Floral

Nectar is the most common floral reward produced by angiosperms, but little is known about the effect of nectar production rate on pollination success. This investigation will focus on this relationship for the hummingbird-pollinated monacarpic plant Ipomopsis aggregata. The primary question of the study involves the overall effect of nectar production rate on fitness: 1) Do plants with higher nectar production rates have greater pollination success? Preliminary field evidence indicates that this does occur (at least for male function pollination success), so study of the causal mechanisms of this effect will be profitable. This question will answered by: 2) How does NPR affect standing crop? 3) How does standing crop affect visitation behavior? 4) How does visitation behavior affect pollination success? The study will investigate these questions with a variety of mutually reinforcing approaches, including computer simulation, observation of the effects of natural variation in NPR, and manipulative experiments in the field and aviary. Estimates of the effect of each mechanism in isolation can be combined to produce an estimate of pollination success that can be compared with benchmark values from Question 1, testing the adequacy of the mechanisms proposed. The research will increase understanding, not only of the fitness consequences of variation in NPR, but the mechanisms through which such effects may be expressed.

花蜜是最常见的花卉奖励生产的 被子植物，但对花蜜的影响知之甚少 授粉成功率。 这次调查将 专注于蜂鸟授粉的这种关系 一年结实植物Ipomopsis aggregata。 的首要问题 该研究涉及花蜜生产率的总体影响， 对健身：1）做植物具有较高的花蜜生产率 授粉成功率更高吗 初步现场证据 表明这种情况确实发生（至少对于男性功能而言 授粉成功），因此研究这一因果机制 效果将是有利可图的。 这个问题的答案是：（2） NPR如何影响现存量？ 3)现存量是如何 影响探视行为 4)探视行为 影响授粉成功吗 本研究将通过各种方法调查这些问题， 相互加强的方法，包括计算机模拟， 观察NPR中自然变化的影响，以及 在野外和鸟舍里进行操纵实验。 估计 每种机制的效果可以单独组合 得出授粉成功率的估计值， 问题1中的基准值，测试 提出的机制。 研究将增加 理解，不仅是变异的适应性后果， 在NPR中，但这种影响可能通过的机制 表达。