U.S.-Korea Cooperative Research: Origins of Rice Insects Determined by Genetic Analysis and GIS

9816384Roderick本奖项将资助夏威夷大学保护研究与培训中心的George K. Roderick博士与韩国庆生大学农业生物学系的yoo - han Song博士进行为期36个月的合作研究项目，以确定韩国稻飞虱（同翅目：飞虱科）的移民物种来源。这些物种不在温带地区如中国中部、朝鲜和日本越冬，但在南亚和东南亚的热带地区全年都有发现。合作者将利用他们各自在分子群体遗传学（Roderick博士）和地理信息系统分析（Song博士）方面的专业知识来检验这些害虫起源的假设。根据移民时的盛行风模式，我们假设移民稻害虫的来源是中国南部和越南北部的一个地区，而更南部的人口不会对每年的移民池做出贡献。然而，这些假设从未得到验证。合作者建议使用新的分子遗传学工具以及使用地理信息系统（GIS）的分析来解决这些假设。特别是，他们将确定稻飞虱（同翅目：稻飞虱科）的韩国移民的起源，并检验南方热带地区的稻飞虱种群（越南红河三角洲以南）是否与北方发现的稻飞虱种群不同。他们还将研究地理障碍、风向和风速在决定迁移模式方面的相对作用。这项研究将深入了解导致种群间遗传分化的因素，并为水稻害虫的管理提供信息。合作者都是在各自研究领域备受尊敬的科学家。该项目与美韩合作科学项目的目标相关，该项目旨在通过科学信息、思想、技能和技术的交流以及在互利问题上的合作，提高美韩科学家和工程师之间的合作水平。韩国的参与得到了韩国科学与工程基金会（KOSEF）的支持

9816384RoderickThis award provides funds to permit Dr. George K. Roderick, Center for Conservation Research and Training, University of Hawaii, to pursue with Dr.Yoo-Han Song, Department of Agricultural Biology, Geong-Sang University, Korea, for 36 months, a program of cooperative research to determine the source of immigrant species of rice planthoppers (Homoptera: Delphacidae) to Korea. These species do not over-winter in temperate areas such as middle China, Korea, and Japan but are found throught the year in tropical regions of South and Southeast Asia. The collaborators will use their respective areas of expertise in molecular population genetics (Dr. Roderick) and in GIS analysis (Dr. Song) to test hypotheses of the origin of these insect pests.Based on prevailing wind patterns at the time of immigration, the sources of immigrant rice pests have been hypothesized to be a region of Southern China and northern Vietnam and that populations further south do not contribute to the yearly pool of migrants. These hypotheses, however, have never been tested. The collaborators propose to address these hypotheses using new molecular genetic tools coupled with an analysis using a geographical information system (GIS). In particular, they will determine the origins of the Korean immigrations of rice planthoppers (Homoptera: Delphacidae) as well as test whether southern, more tropical populations (south of the Red River Delta in Vietnam) are distinct from populations found to the north. They also will examine the relative roles of geographic barriers and wind direction and speed in determining patterns of migration. This research will provide insight into the factors that lead to genetic differentiation among populations as well as provide information for management of rice pests. The collaborators are highly regarded scientists in their respective fields of research. This project is relevant to the objectives of the U.S.-Korea Cooperative Science Program which seeks to increase the level of cooperation between U.S. and Korean scientists and engineers through the exchange of scientific information, ideas, skills, and techniques and through collaboration on problems of mutual benefit. Korean participation is supported by the Korea Science and Engineering Foundation (KOSEF).***