US-Norway Cooperative Research: Metabolism of Amphipods in the Landfast Sea-Ice near Spitsbergen

美国-挪威合作研究：斯匹次卑尔根岛附近陆地海冰中片脚类动物的新陈代谢

• 批准号: 8903589
• 负责人: Joseph Torres
• 金额: $ 0.76万
• 依托单位: University of South Florida
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-06-01 至 1990-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8903589&HistoricalAwards=false
• 关键词: US; Norway; Cooperative; Research; Metabolism

This award supports Dr. Joseph J. Torres of the University of South Florida for collaborative research in marine biology with Dr. A. V. Aarset of the University of Trondheim, Norway. They are interested in the metabolic adaptations of organisms that live under sea-ice in the Polar regions. Such adaptations include strictly regulating the concentration of bodily fluids, tolerating dilution of bodily fluids, or some form of compromise between the two. Dr. Torres will determine metabolic energy costs for individual amphipods at different experimental salinities using oxygen electrodes and water-jacketed respirometers in multiple configuration. Dr. Aarset will examine survivorship and hemolymph concentration of these amphipods in response to changing salinity. He will also evaluate their tolerance of supercooling. This research will be done at Ny Aalesund, a field station on Spitsbergen, as part of the Pro Mare Program of Norway. Polar sea-ice is a conspicuous and important feature of the world's oceans. A well developed but little studied community of organisms exists within and beneath this ice. Gammarid amphipods are the most important macrofaunal grazers there, and they form a potentially important trophic link between the ice algae and the fishes living in the water column below the pack ice. These small crustaceans must withstand severe salinity changes caused by seasonal freezing and thawing of the pack ice. The proposed research will produce an excellent analysis of the adaptive strategies used by several species of amphipods.

该奖项支持南佛罗里达大学的约瑟夫·J·托雷斯博士与挪威特隆赫姆大学的A·V·阿尔塞特博士在海洋生物学方面的合作研究。他们对生活在极地海冰下的生物的新陈代谢适应感兴趣。这样的适应包括严格控制体液的浓度，容忍体液的稀释，或者在两者之间做出某种形式的妥协。托雷斯博士将使用氧电极和多种配置的水套呼吸器来确定不同实验盐度下单个两足类动物的代谢能量成本。Aarset博士将研究这些两足动物的存活率和血淋巴浓度对盐度变化的反应。他还将评估他们对过冷的容忍度。这项研究将在NY Aalesund进行，这是斯皮茨卑尔根上的一个野战站，作为挪威Pro Mare计划的一部分。极地海冰是世界海洋的一个显著而重要的特征。冰内和冰下存在着一个发育良好但很少被研究的生物群落。伽马类双足类是那里最重要的大型动物食草动物，它们在冰藻和生活在浮冰下面的水柱中的鱼类之间形成了潜在的重要营养联系。这些小型甲壳类动物必须经受住季节性冰冻和融化造成的严重盐度变化。这项拟议的研究将对几种两足类动物的适应策略进行极好的分析。