U.S.-Japan Cooperative Science: Ecophysiology of Larval-Stage Dispersal in Estuarine Fishes

美日合作科学：河口鱼类幼虫期扩散的生态生理学

• 批准号: 9725942
• 负责人: David Secor
• 金额: $ 2.33万
• 依托单位: University of Maryland Center for Environmental Sciences
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-04-01 至 2001-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9725942&HistoricalAwards=false
• 关键词: U.S.; Japan; Cooperative; Science; Ecophysiology

9725942 Secor This award supports a three year collaborative research project between Professor David Secor of the University of Maryland and Professor Masaru Tanaka of Kyoto University in Japan. The researchers will be exploring ecophysiology of larval-stage dispersal in estuarine fishes. A critical phase in estuarine fishes is the transition between larval and juvenile stages. For Japanese sea bass, transition- phase fish move from brackish to freshwater habitats. The researchers will examine the timing of this habitat shift in relation to: (l) the physiological ability of larvae to adapt to changing salinity habitats; (2) the size and age of larvae; and (3) environmental conditions. The project will couple methodologies in otolith microanalysis and immunocytochemistry. The otolith's chemical record will serve as a chronometer on the timing of the habitat shift relative to age and size. Individual level analysis of endocrine function will indicate whether a larva is competent to change habitats. This project brings together the efforts of two laboratories that have complementary expertise, research capabilities and equipment. The collaboration will unite the U.S. researcher's expertise in otolith microanalysis with the Japanese expertise in immunocytochemistry. Research results of otolith microanalysis will establish the where's and when's of larval ingress or egress into juvenile habitats. Also the endocrine status and larval growth rate will provide information on how the habitat shift is successfully accomplished. Through the exchange of ideas and technology, this project will broaden our base of basic knowledge and promote international understanding and cooperation. ***

小行星9725942 该奖项支持马里兰州大学的大卫塞科尔教授和日本京都大学的田中胜教授之间为期三年的合作研究项目。 研究人员将探索河口鱼类幼虫阶段扩散的生态生理学。 河口鱼类的一个关键阶段是幼体和幼鱼阶段之间的过渡。 对于日本鲈鱼来说，过渡期的鱼从半咸水的栖息地迁移到淡水的栖息地。 研究人员将研究这种栖息地转变的时间与以下因素的关系：（1）幼虫适应盐度变化栖息地的生理能力;（2）幼虫的大小和年龄;（3）环境条件。 该项目将结合耳石微量分析和免疫细胞化学方法。 耳石的化学记录将作为一个计时器的栖息地转移的时间相对于年龄和大小。 内分泌功能的个体水平分析将表明幼虫是否有能力改变栖息地。 该项目汇集了两个实验室的努力，这两个实验室具有互补的专业知识、研究能力和设备。 这项合作将把美国研究人员在耳石微量分析方面的专业知识与日本在免疫细胞化学方面的专业知识结合起来。 耳石微量分析的研究结果将确定幼虫进入或进入幼鱼栖息地的时间和地点。 此外，内分泌状态和幼虫生长速度将提供有关如何成功完成栖息地转移的信息。 通过交流思想和技术，该项目将扩大我们的基础知识，促进国际理解与合作。 ***