Strontium isotope and trajectory method elucidating overseas migration of Mythimna separata to Japan
文献类型： 外文期刊
第一作者： Hidaka, Naoya
作者： Hidaka, Naoya;Akiduki, Gaku;Otuka, Akira;Tian, Caihong;Zhang, Shengnan;Li, Guoping;Feng, Hongqiang;Tayasu, Ichiro;Shin, Ki-Cheol;Niiyama, Tokumitsu;Hu, Gao;Li, Shimin
作者机构：
期刊名称：ISCIENCE （ 影响因子：4.1； 五年影响因子：4.7 ）
ISSN：
年卷期： 2024 年 27 卷 11 期
页码：
收录情况： SCI
摘要： The oriental armyworm, Mythimna separata, generally migrates from eastern to northeastern China in early summer, and some individuals are believed to migrate overseas to Japan depending on meteorological conditions. This potential migration was investigated with the immigrants' strontium radiogenic isotope ratio 87Sr/86Sr and backward flight trajectories from Japanese trapping sites. The results showed that the 87Sr/86Sr ratios of Chinese reared M. separata were significantly higher than those of reared insects of Japanese immigration areas. As some individuals trapped in western Japan had 87Sr/86Sr ratios higher than a statistical discriminating ratio, they likely originated in China. Trajectory analysis also indicated those individuals might have originated from the East Asian continent, such as the first-generation outbreak region in China and their migration waypoint regions. Our analysis, thus, suggests direct or multistep overseas migration of individual M. separata from the East Asian continent to Japan, giving insight into migration pathways and population dynamics.
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