Nam H Y, Kim K S, Lee J-H
Entomology Program, Department of Agricultural Biotechnology, Seoul National University, Seoul 08826, Republic Korea.
Iowa State University, Department of Natural Resource Ecology and Management, Ames, IA, 50011, USA.
Bull Entomol Res. 2019 Aug;109(4):453-462. doi: 10.1017/S0007485318000755. Epub 2018 Oct 10.
The white-backed planthopper, Sogatella furcifera (Horváth) (Hemiptera, Delphacidae), has emerged as a serious rice pest in Asia. In the present study, 12 microsatellite markers were employed to investigate the genetic structure, diversity and migration route of 43 populations sampled from seven Asian countries (Bangladesh, China, Korea, Laos, Nepal, Thailand, and Vietnam). According to the isolation by distance analysis, a significant positive correlation was observed between genetic and geographic distances by the Mantel test (r2 = 0.4585, P = 0.01), indicating the role of geographic isolation in the genetic structure of S. furcifera. A population assignment test using the first-generation migrants detection method (thresholds a = 0.01) revealed southern China and northern Vietnam as the main sources of S. furcifera in Korea. Nepal and Bangladesh might be additional potential sources via interconnection with Vietnam populations. This paper provides useful data for the migration route and origin of S. furcifera in Korea and will contribute to planthopper resistance management.
白背飞虱，即电光叶蝉（Sogatella furcifera (Horváth)）（半翅目，飞虱科），已成为亚洲一种严重的水稻害虫。在本研究中，使用了12个微卫星标记来调查从七个亚洲国家（孟加拉国、中国、韩国、老挝、尼泊尔、泰国和越南）采集的43个种群的遗传结构、多样性和迁移路线。根据距离隔离分析，通过Mantel检验观察到遗传距离与地理距离之间存在显著正相关（r2 = 0.4585，P = 0.01），这表明地理隔离在电光叶蝉遗传结构中发挥了作用。使用第一代迁移者检测方法（阈值a = 0.01）进行的种群分配测试表明，中国南方和越南北部是韩国电光叶蝉的主要来源。尼泊尔和孟加拉国可能是通过与越南种群的联系而成为额外的潜在来源。本文为韩国电光叶蝉的迁移路线和起源提供了有用数据，并将有助于飞虱抗性管理。
