数字农科院2.0

Initial Detections And Spread Of Invasive Spodoptera Frugiperda In China And Comparisons With Other Noctuid Larvae In Cornfields Using Molecular Techniques

文献类型： 外文期刊

作者： Jing, Da-Peng;Jiang, Yu-Ying;Zhao, Jian-Zhou;Guo, Jing-Fei;Sethi, Amit;He, Kang-Lai;Wang, Zhen-Ying

作者机构：

关键词： Corn; Molecular Identification; Mythimna Separata; Spodoptera Exigua; Spodoptera Frugiperda; Spodoptera Litura

期刊名称： INSECT SCIENCE

ISSN： 1672-9609

年卷期： 2020 年 27 卷 4 期

页码：

摘要： The fall armyworm, Spodoptera frugiperda, is a species native to the Americas and has spread to many countries in Africa and Asia in recent years. Proactive actions for potential invasion of S. frugiperda to China coordinated by government agencies and agricultural extension systems resulted in timely detection in January 2019 in Yunnan province neighboring onto Myanmar. The extensive monitoring in southern provinces of China since February 2019 resulted in dynamic tracking of S. frugiperda spreading to 13 provincial regions in China within 4 months by May 10, 2019, which is crucial for timely management actions in the fields. The first detections of S. frugiperda (corn strain) in China were confirmed using cytochrome oxidase subunit 1 (CO1) and triosephosphate isomerase (Tpi) genes molecular marker method. In addition to S. frugiperda, larvae of three other noctuid species with similar morphological appearance (S. litura, S. exigua and Mythimna separata) can occur simultaneously and cause similar damage in cornfields in southern China. Thus, we can use both morphological and molecular marker methods to compare larval stages of four noctuid species. Further, we discuss the risk of potential spread of invasive S. frugiperda to other regions and impact on corn production in China.

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