Book contents
- Frontmatter
- Contents
- Contributors
- Preface
- Part one Insect migration in relation to weather and climate
- Part two Adaptations for migration
- Part three Forecasting migrant pests
- 15 Operational aspects of forecasting migrant insect pests
- 16 Geographic information systems and remotely sensed data for determining the seasonal distribution of habitats of migrant insect pests
- 17 Forecasting systems for migrant pests. I. The Brown Planthopper Nilaparvata lugens in China
- 18 Forecasting systems for migrant pests. II. The rice planthoppers Nilaparvata lugens and Sogatella furcifera in Japan
- 19 Forecasting systems for migrant pests. III. Locusts and grasshoppers in West Africa and Madagascar
- Part four Overview and synthesis
- Index
18 - Forecasting systems for migrant pests. II. The rice planthoppers Nilaparvata lugens and Sogatella furcifera in Japan
Published online by Cambridge University Press: 04 November 2009
- Frontmatter
- Contents
- Contributors
- Preface
- Part one Insect migration in relation to weather and climate
- Part two Adaptations for migration
- Part three Forecasting migrant pests
- 15 Operational aspects of forecasting migrant insect pests
- 16 Geographic information systems and remotely sensed data for determining the seasonal distribution of habitats of migrant insect pests
- 17 Forecasting systems for migrant pests. I. The Brown Planthopper Nilaparvata lugens in China
- 18 Forecasting systems for migrant pests. II. The rice planthoppers Nilaparvata lugens and Sogatella furcifera in Japan
- 19 Forecasting systems for migrant pests. III. Locusts and grasshoppers in West Africa and Madagascar
- Part four Overview and synthesis
- Index
Summary
Introduction
The long-range migrations of the the Brown Planthopper Nilaparvata lugens and the White-backed Planthopper Sogatella furcifera extend over the whole area of rice cultivation in East Asia and are closely associated with the wind systems of the monsoon climate of the region (Chapter 3, this volume). Because they do not overwinter in Japan, field populations of these planthoppers originate with overseas immigration in the Bai-u (rainy) season in June and July.
Kisimoto (1976) found that immigration of rice planthoppers into Japan was associated with the activity of frontal depressions during the Bai-u season and concluded that mass immigration was correlated with depressions that had passed through eastern central China. The southwest winds in these depressions carry the migrating planthoppers and Rosenberg & Magor (1983) used trajectory analysis to estimate the source of N. lugens arriving in Japan or caught on board ship in the East China Sea. They showed that trajectories based on winds at 1.5 km above sea level originated in potential emigration source areas more frequently than trajectories at 10 m.
Seino et al. (1987) obtained highly significant correlations between the immigration of planthoppers into Japan and the development of lowlevel jet (LLJ) airflows (see below) that coincide with the occurrence of heavy Bai-u rainfall. This chapter discusses the use of analysis of LLJs in monitoring systems to determine the location and timing of rice-planthopper immigration into Japan.
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- Chapter
- Information
- Insect MigrationTracking Resources through Space and Time, pp. 365 - 376Publisher: Cambridge University PressPrint publication year: 1995
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