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A migration analysis of Sogatella furcifera (Horváth) (Homoptera: Delphacidae) using hourly catches and a three-dimensional simulation model

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• Migrations of Sogatella furcifera captured in Japan in the 2003 season were analysed using hourly catches and a simulation model.

• The catch data showed several clear migration peaks, with average durations of 4 h. The peaks were separated from each other by approximately 12 h, corresponding to the observed fact that planthoppers take off at dusk or dawn.

• The simulation model comprised two components: a numerical weather forecast submodel, MM5, and a particle dispersion submodel, GEARN. The simulation model used three-dimensional meteorological data and calculated the relative aerial density of migrating planthoppers to allow analysis of the timing and area of migrations in Japan.

• The simulation model, together with the hourly catches, enabled an estimation of migration source regions.

• Possible migration sources during our hourly observation period were located in the coastal area of Fujian province in China, as well as Taiwan.
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Keywords: GEARN; MM5; Sogatella furcifera; long-distance migration; planthopper; simulation

Document Type: Research Article

Publication date: 2006-01-01

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