@article{SUN2026, 
author = {Si-Si SUN and Yi-Yang ZHANG and Chun-Yan YANG and Pi-Ru TANG and Gao HU and Yun-Xuan BAO and Yan WU and Shi-Yan ZHANG},
title = {Influence of atmospheric quasi-biweekly oscillation on immigration of Sogatella furcifera (Horváth) in southern China},
year = {2026},
journal = {Journal of Environmental Entomology},
volume = {48},
number = {1},
pages = {66-75},
keywords = {Sogatella furcifera, atmospheric quasi-biweekly oscillation, atmospheric circulation, immigration},
url = {https://www.sciopen.com/article/10.3969/j.issn.1674-0858.2026.01.6},
doi = {10.3969/j.issn.1674-0858.2026.01.6},
abstract = {AimThis study aims to investigate the influence of quasi-biweekly oscillations on the immigration of the white-backed planthopper (Sogatella furcifera) into southern China, with a focus on the characteristic low-frequency atmospheric circulation fields and their mechanisms during different immigration phases (population peak and trough periods).MethodsLight-trap data from 20 stations across South China (2011-2016) were analyzed. The Morlet wavelet analysis was employed to extract the dominant low-frequency oscillation period of the immigration population during March-May. Key low-frequency atmospheric circulation elements significantly associated with immigration volume were then identified through correlation analysis, and their phase-dependent influences were examined using phase composite analysis, and the climatological characteristics of low-frequency circulation fields during specific phases were summarized.ResultsThe analysis revealed a dominant low-frequency oscillation period of 10~20 days in the immigration volume of white-backed planthopper in South China, consistent with the period of atmospheric quasi-biweekly oscillations. The low-frequency wind and geopotential height fields were identified as the primary circulation backgrounds influencing immigration. A regime shift from southwesterly to northeasterly winds-driven by the strengthening of cyclonic circulation over the western Pacific/Sea of Japan and the weakening of anticyclonic circulation over the South China Sea/Bay of Bengal-was found to suppress immigration from source areas to South China. In contrast, positive low-frequency height anomalies and a northward shift of the subtropical high facilitated immigration.ConclusionTherefore, atmospheric quasi-biweekly oscillations dynamically modulate immigration through the configuration and evolution of wind and geopotential height fields, indicating that quasi-biweekly signals, such as the activity phase of zonal wind, can support medium-term forecasting of white-backed planthopper immigration.}
}