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Abstract：
The nutria (Myocastor coypus) is an invasive alien species that have had major adverse effects on biodiversity and the agricultural economy in wetland habitats. Since 2014, the Ministry of Environment in South Korea has been carrying out the Nutria Eradication Project, and we investigated nutria distribution and genetic diversity of nutria populations in South Korea. We estimated that 99.2% of nutria habitats are in the mid-lower Nakdong River regions. To further analyze the genetic diversity in eight major nutria populations, we performed a genetic analysis using microsatellite markers. Genetic diversity levels of the eight nutria populations in South Korea were relatively lower than those in other countries. The probability of migration direction among nutria populations was predicted from genetic distance analysis. Genetic structure analysis showed little difference among the nutria populations in South Korea. These results suggest that nutrias in South Korea originated from a single population. Our results provide important data for establishing management strategies for the successful eradication of nutria populations in South Korea, as well as in other countries with alien invasive species.
摘要：
营养（Myocastorcoypus）是一种外来入侵物种，对湿地栖息地的生物多样性和农业经济产生了重大不利影响。自2014年以来，韩国环境部一直在开展Nutria根除项目，我们调查了韩国营养种群的营养分布和遗传多样性。我们估计99.2％的营养品栖息地位于中下游Nakdong河地区。为了进一步分析8个主要营养品种群的遗传多样性,我们使用微卫星标记进行了遗传分析.韩国八个营养学家种群的遗传多样性水平相对低于其他国家。通过遗传距离分析预测了营养品种群之间迁移方向的可能性。遗传结构分析显示，韩国营养品种群之间差异不大。这些结果表明，韩国的营养品起源于单一种群。我们的结果为建立成功根除韩国营养人群的管理策略提供了重要数据，以及其他有外来入侵物种的国家。
