Cross-Site: Saurian Malaria: A Long-Term Study

跨站点：蜥蜴疟疾：一项长期研究

• 批准号: 9527115
• 负责人: Joseph Schall
• 金额: $ 20.85万
• 依托单位: University of Vermont & State Agricultural College
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-01-01 至 1999-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9527115&HistoricalAwards=false
• 关键词: Cross; Site; Saurian; Malaria; Long

BOREAS BSR Ballston BioScience Bioinformatics Bitnet CEAS CENR COI COV CRB Christensen Clements Clementsian CoI Collins Curtis DCA DD DDD DEB DEB's DGC Delmarva Detling Detrended Dioecious Drosophila Dulles EROC Edwards Erag9527115 Schall This project will continue long-term ecological studies on the malarial parasites of lizards. Three sites will be used: (1) the Hopland Field Station in northern California where field and laboratory studies on lizard malaria have been underway for 17 years, (2) the Luquillo LTER site in Puerto Rico where preliminary data were gathered, and (3) the eastern Caribbean island of Saba where other recent surveys have been conducted. The broad goal of this project is to continue studies at all three sites for at least the next decade. The research will examine the distribution, abundance, sex ratio, and interspecific interactions in three species of malarial parasites in lizard hosts. One species of malaria infects the western fence lizard in California. The ecology of this species is perhaps the best known of any non-human malaria. Two other malaria species coexist in the Caribbean. Parasite abundance, sex ratio, and interspecific associations all interact over ecological and evolutionary time. These long-term studies will provide the necessary base-line data for understanding this host-p arasite system. Three issues will be addressed. First, the distribution and abundance of the parasites will be followed over time and compared among sites. Classical and recent models of parasite prevalence will be explored with these data. Second, recent theory on sex ratios of malarial gametocytes will be tested by taking advantage of the different levels of prevalence at the tropical and temperate sites and as parasite prevalence changes over time. Third, interspecific interaction, especially facilitation, will be explored for the two coexisting species of malarial parasites at the two tropical sites. The relative and absolute abundances of the two parasites could effect interactions between the lizards. Malarial parasites are a diverse, geographically widespread group. Their importance to the biology, including population biology, of humans is well documented. Studies on lizard malaria now suggest that Plasmodium can be of central importance to non-human hosts as well, including population and even community-level effects. The Anolis lizards of Caribbean islands are extremely abundant and influence the entire biotic environment because of their diet of insects. Thus, lizard malaria can stand as a model system to study host-parasite ecology and its impacts on other aspects of the biota.

BOREAS BSR Ballston BioScience Bioinformatics Bitnet CEAS CENR COI COV CRB Christensen Clements Clementsian CoI Collins Curtis DCA DD DDD DEB DEB's DGC Delmarva Detling Detrended Dioecious Drosophila Dulles EROC Edwards Erag9527115 Schall This project will continue long-term ecological studies on the malarial parasites of lizards.将使用三个地点：（1）北加州的霍普兰田间站，有关蜥蜴疟疾的现场和实验室研究已经进行了17年，（（2）在波多黎各的Luquillo lter地点收集了初步数据，以及（3）最近有其他苏巴的东部加勒比海岛进行了其他最近进行的。 该项目的广泛目标是至少在接下来的十年中继续在所有三个地点进行研究。 该研究将检查蜥蜴宿主中三种疟疾寄生虫的分布，丰度，性别比和间种间相互作用。一种疟疾感染了加利福尼亚的西部栅栏蜥蜴。该物种的生态可能是任何非人类疟疾中最著名的。 加勒比海共存的另外两个疟疾物种。寄生虫的丰度，性别比和种间关联都在生态和进化时期相互作用。这些长期研究将提供必要的基线数据，以理解该宿主-P芳烃系统。 将解决三个问题。首先，随着时间的推移和比较，将遵循寄生虫的分布和丰度。这些数据将探索寄生虫患病率的经典和最新模型。其次，最新的关于疟疾配子细胞性别比例的理论将通过利用热带和温带部位的不同水平的患病率以及随着时间的流逝而变化来测试。第三，将在两个热带部位的两种共存的疟疾寄生虫物种中探索种间相互作用，尤其是促进性。两个寄生虫的相对和绝对丰度可以影响蜥蜴之间的相互作用。 疟疾寄生虫是一个多元化的地理广泛的群体。它们对人类的生物学（包括人群生物学）的重要性已得到充分记录。现在，对蜥蜴疟疾的研究表明，疟原虫对非人类宿主也可能具有至关重要的重要性，包括人口甚至社区级别的影响。 加勒比群岛的Anolis蜥蜴非常丰富，并且由于昆虫的饮食而影响整个生物环境。因此，蜥蜴疟疾可以成为研究宿主寄生虫生态学及其对生物群体其他方面的影响的模型系统。