ABR: Physiological Ecology of Hydrothermal Vent Animals

ABR：热液喷口动物的生理生态学

• 批准号: 9012076
• 负责人: James Childress
• 金额: --
• 依托单位: University of California-Santa Barbara
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-09-01 至 1993-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9012076&HistoricalAwards=false
• 关键词: ABR; Physiological; Ecology; Hydrothermal; Vent

This investigation is a continuation of research into the mechanisms used by hydrothermal vent animals to nurture themselves and to avoid the toxic potentials of the vent habitats. The on-site studies will be executed on cruises to 13'N on the East Pacific Rise during 1991 and 1992 in cooperation with a French group from IFREMER. The studies will focus on measuring the rates of exchange of CO2, O2, sulfide and potential nitrogen sources by the intact chemoautotrophic symbiotic associations (vestimentiferan tubeworms and mussels) under different conditions of temperature, pH, O2, sulfide and CO2, to define the environmental requirements and limitations on these organisms as well as to investigate the interaction of animal and symbiont metabolism in dealing with sulfide and its oxidation products. The transport of CO2, O2 and reduced sulfur compounds within the animals will be examined by means of experiments with intact animals and with isolated O2 and sulfide binding proteins. Similar studies will also be carried out on the hydrothermal vent crabs to gain an understanding of their abilities to live continuously in low O2, high sulfide environments. Similar studies will additionally be conducted for comparison on non-vent symbiotic and heterotrophic species as well.

这项研究是对热液喷口动物用于养育自己和避免喷口栖息地有毒潜力的机制研究的延续。在1991年和1992年期间，将在前往东太平洋高地13'N的游船上进行现场研究，并与国际海洋研究中心的一个法国小组合作。研究将侧重于测量在不同温度、pH值、O2、硫化物和CO2条件下，完整的化学自养共生关系（管虫和贻贝）对CO2、O2、硫化物和潜在氮源的交换速率，以确定这些生物的环境要求和限制，并研究动物和共生代谢在处理硫化物及其氧化产物时的相互作用。二氧化碳、氧气和还原硫化合物在动物体内的运输将通过完整动物和分离的氧气和硫化物结合蛋白的实验来检验。类似的研究也将在热液喷口蟹身上进行，以了解它们在低氧、高硫化物环境中持续生存的能力。此外，还将进行类似的研究，以比较非通气共生和异养物种。