Population Genetics and Trajectory Simulation Reveals the Invasion Process of the Fall Armyworm (Spodoptera frugiperda) in the Eastern Hemisphere.

ABSTRACT: As a migratory agricultural pest, the fall armyworm has been in the spotlight since it invaded Africa in 2016. Invasive populations have now colonized much of the Eastern Hemisphere, causing severe damage to a wide range of crops. However, there is still disagreement internationally on the origin and mode of invasion of fall armyworm populations, especially from the Americas to China. In this study, we provided an in-depth insight into the invasion of the fall armyworm in the Eastern hemisphere based on genome-wide data from 124 fall armyworm individuals collected from 14 sites across three continents and trajectory simulation. First, based on 770,423 high-quality SNPs, the PCA and ADMIXTURE analyses clearly distinguished the geographical populations of the Eastern and Western hemispheres.

SUBMITTER: Fu P 

PROVIDER: S-EPMC11848417 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature