Development and Employment of New Approaches to the Study ofHydrothermal Vent Organisms

费舍尔博士将启动三种类型的调查， 化能自养热液喷口无脊椎动物 共生体这些研究将解决以下方面的具体主要差距： 我们对东太平洋北纬13度的物种的了解 崛起;开发的技术将在未来有用 在任何有双壳类或 管虫 首先是确定原位管 管虫Tevnia jerichonana的生长速度，以及相关的 这些测量值允许将这些测量值转换为 在重量基础上增长。 第二是发展， 采用新的和改进的技术， 使用完整的鳃制备物（来自B. 嗜热菌）作为完整的 动物和分离的细菌制剂，以研究共生体 physiology. 第三个系列的实验是研究 vestimentiferan共生体浓度和自养碳 固定率。pachyptila共生体，并扩大以前的 对第二种vestimentiferan进行比较研究 目的

Dr. Fisher will initiate three types of investigations of hydrothermal vent invertebrates with chemoautotrophic symbionts. These studies will address specific major gaps in our understanding of the species at 13N on the East Pacific Rise; the techniques developed will be useful in future investigations at any hydrothermal vent site with bivalves or tubeworms. The first is a determination of the in-situ tube growth rate of the tubeworm Tevnia jerichonana, and associated measurements which allow conversion of these measurement to growth on a weight basis. The second involves development and employment of new and modified techniques for physiological investigations using intact gill preparations (from B. thermophilus) incubated under pressure as models of intact animals, and isolated bacterial preparations to study symbiont physiology. The third series of experiments are studies of vestimentiferan symbiont concentration and autotrophic carbon fixation rate by R. pachyptila symbionts, and expand previous studies to a second species of vestimentiferan for comparative purposes.