DISSERTATION RESEARCH: Ecological Selection and the Evolution of Reproductive Isolation in a Marine Copepod

论文研究：海洋桡足类的生态选择和生殖隔离的演变

• 批准号: 0104683
• 负责人: Daniel Promislow
• 金额: $ 0.72万
• 依托单位: University of Georgia Research Foundation Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-05-01 至 2003-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0104683&HistoricalAwards=false
• 关键词: DISSERTATION; RESEARCH; Ecological; Selection; Evolution

DISSERTATION RESEARCH: Ecological Selection and the Evolution of Reproductive Isolation in a Marine CopepodDaniel Promilow and Amber KeyserThis research is designed to study the evolutionary consequences of environmental change on an abundant, marine organism, Tigriopus californicus. Changing climate patterns affect the temperature and salinity conditions that these copepods experience. The species must be able to adapt to these changes, or risk extinction. However, adaptation to changing ecological conditions can be a mixed blessing because the indirect effects of adaptation can influence many different aspects of the organism's lifestyle. One of the most dramatic secondary consequences can be the evolution of barriers to interbreeding between populations. In this series of experiments, the researchers will maintain populations of copepods under different environmental conditions in the laboratory. This will simulate various kinds of climate change. Over sixteen generations in the laboratory, the researchers will look for evidence of adaptation to the new conditions at a molecular level and at the developmental level. In addition, they will look for indirect effects of climate change such as an increasing inability of copepods from different populations to interbreed. The results of these experiments will help researchers to predict the long-term, evolutionary effects of global climate change on crustaceans in the marine environment.

论文研究：海洋桡足类动物的生态选择和生殖隔离的进化丹尼尔·普罗米洛和琥珀钥匙这项研究旨在研究环境变化对丰富的海洋生物--加州虎鱼的进化后果。气候模式的变化会影响这些桡足类所经历的温度和盐度条件。该物种必须能够适应这些变化，否则就有灭绝的危险。然而，适应不断变化的生态条件可能是喜忧参半，因为适应的间接影响可能会影响生物体生活方式的许多不同方面。最戏剧性的次要后果之一可能是种群间杂交障碍的演变。在这一系列实验中，研究人员将在实验室中保持不同环境条件下的桡足类种群。这将模拟各种气候变化。在实验室的16代人中，研究人员将在分子水平和发育水平上寻找适应新条件的证据。此外，他们还将寻找气候变化的间接影响，例如来自不同种群的桡足类动物越来越不能进行杂交。这些实验的结果将有助于研究人员预测全球气候变化对海洋环境中甲壳类动物的长期进化影响。