Comparative Study of the Bioenergetics, Growth Rates and Food Preferences of Heterotrohic Dinoflagellates and Ciliates

异养甲藻和纤毛虫生物能学、生长速率和食物偏好的比较研究

• 批准号: 9403426
• 负责人: Evelyn Lessard
• 金额: $ 25.05万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-06-01 至 1998-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9403426&HistoricalAwards=false
• 关键词: Comparative; Study; Bioenergetics; Growth; Rates

9403426 Lessard This project will investigate the bioenergetics, growth and prey preferences of representative heterotrophic dinoflagellates and ciliates in batch cultures to define the trophic roles of each group and to determine how these two groups of potential competitors coexist in the marine plankton. A systematic investigation will be done on the bioenergetics and food preferences in a large number of representative heterotrophic dinoflagellates and ciliates using a 14C-radiotracing method which will include direct measures of egestion and excretion of organic matter. Information on gross growth efficiencies, maximal growth rates, and the effects of temperature and food quality will be obtained under strictly comparable conditions. Careful evaluation of the carbon: volume relationship of thecate and athecate dinoflagellates will also be undertaken, as this is an important but uncertain parameter, which greatly affects estimates of gross growth efficiencies and biomass estimations.

小行星9403426 本项目将研究在批量培养中具有代表性的异养甲藻和纤毛虫的生物能量学、生长和猎物偏好，以确定每组的营养作用，并确定这两组潜在竞争者如何在海洋浮游生物中共存。 系统的调查将在大量的代表性异养甲藻和纤毛虫的生物能量学和食物偏好，使用14 C-放射性示踪方法，其中包括有机物质的排泄和排泄的直接措施。 将在严格可比的条件下获得关于总生长效率、最大生长率以及温度和食物质量的影响的信息。 仔细评估的碳：体积关系的thecate和athecate甲藻也将进行，因为这是一个重要的，但不确定的参数，这极大地影响了估计的总增长效率和生物量的估计。