MCF: Ecology and Evolution of Nectar-feeding Bats and Columnar Cacti

MCF：食花蜜蝙蝠和柱状仙人掌的生态学和进化

• 批准号: 9203037
• 负责人: Theodore Fleming
• 金额: $ 7.53万
• 依托单位: Individual Award
• 依托单位国家: 美国
• 项目类别: Fellowship Award
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-08-15 至 1994-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9203037&HistoricalAwards=false
• 关键词: MCF; Ecology; Evolution; Nectar; feeding

The Principal Investigator will spend the 1992-93 academic year in the Department of Ecology and Evolutionary Biology, University of Arizona conducting field work on the ecology and evolution of nectarivorous bat-cactus interactions in the Sonoran desert. Two hypotheses will be examined in this research: (1) the phylogeography of the migratory nectar-feeding bat Leptonycterid curasoae conforms to the type I pattern of Avise et al. (1987): there should be strong phylogenetic continuity within subspecies and a strong genetic separation between subspecies; northern migrants of the Mexican species represent a random draw from southern populations and (2) sex ratios in the trioecious, bat- pollinated cactus Pachycereus pringlei vary geographically with the proportion of females in populations being positively correlated with the availability of nectarivorous bats. The P.I. will use mtDNA techniques to test the first hypothesis and observational techniques to test the second hypothesis. When not in the field he P.I. will work in the Laboratory of Molecular Evolution and Molecular Systematics to learn molecular techniques (e.g. mtDNA and cpDNA restriction site analysis) and methods of phylogenetic analysis. These techniques are essential for future studies of the historical ecology of bat-plant interactions in New World desert ecosystems.

首席研究人员将在亚利桑那大学的生态与进化生物学系上度过1992-93学年，从事索诺兰沙漠中的蜜蜂蝙蝠 - 乳酸互动的生态学和进化。 在这项研究中将检查两个假设：（1）迁徙花蜜喂养的蝙蝠leptonycterid curasoae的植物地理学符合Avise等人的I型模式。 （1987）：亚种内应具有强大的系统发育连续性，并且在亚种之间应有很强的遗传分离。墨西哥物种的北部移民代表了南部人群的随机抽奖，（2）三重肉授粉的仙人掌pachycereus pringlei的性别比在地理上不同于地理上的不同地理位置，而雌性的比例与lect虫的可用性呈正相关。 P.I. 将使用mtDNA技术测试第一个假设和观察技术来检验第二个假设。 当不在野外时将在分子进化和分子系统学实验室工作，以学习分子技术（例如mtDNA和CPDNA限制性位点分析）和系统发育分析的方法。 这些技术对于新世界沙漠生态系统中蝙蝠植物相互作用的历史生态学的未来研究至关重要。