Book contents
- Frontmatter
- Contents
- Contributors
- Preface
- Part one Insect migration in relation to weather and climate
- 1 Long-range insect migration in relation to climate and weather: Africa and Europe
- 2 Insect migration in North America: synoptic-scale transport in a highly seasonal environment
- 3 Migration of the Brown Planthopper Nilaparvata lugens and the White-backed Planthopper Sogatella furcifera in East Asia: the role of weather and climate
- 4 Migration of the Oriental Armyworm Mythimna separata in East Asia in relation to weather and climate. I. Northeastern China
- 5 Migration of the Oriental Armyworm Mythimna separata in East Asia in relation to weather and climate. II. Korea
- 6 Migration of the Oriental Armyworm Mythimna separata in East Asia in relation to weather and climate. III. Japan
- 7 Insect migration in an arid continent. I. The Common Armyworm Mythimna convecta in eastern Australia
- 8 Insect migration in an arid continent. II. Helicoverpa spp. in eastern Australia
- 9 Insect migration in an arid continent. III. The Australian Plague Locust Chortoicetes terminifera and the Native Budworm Helicoverpa punctigera in Western Australia
- Part two Adaptations for migration
- Part three Forecasting migrant pests
- Part four Overview and synthesis
- Index
6 - Migration of the Oriental Armyworm Mythimna separata in East Asia in relation to weather and climate. III. Japan
Published online by Cambridge University Press: 04 November 2009
- Frontmatter
- Contents
- Contributors
- Preface
- Part one Insect migration in relation to weather and climate
- 1 Long-range insect migration in relation to climate and weather: Africa and Europe
- 2 Insect migration in North America: synoptic-scale transport in a highly seasonal environment
- 3 Migration of the Brown Planthopper Nilaparvata lugens and the White-backed Planthopper Sogatella furcifera in East Asia: the role of weather and climate
- 4 Migration of the Oriental Armyworm Mythimna separata in East Asia in relation to weather and climate. I. Northeastern China
- 5 Migration of the Oriental Armyworm Mythimna separata in East Asia in relation to weather and climate. II. Korea
- 6 Migration of the Oriental Armyworm Mythimna separata in East Asia in relation to weather and climate. III. Japan
- 7 Insect migration in an arid continent. I. The Common Armyworm Mythimna convecta in eastern Australia
- 8 Insect migration in an arid continent. II. Helicoverpa spp. in eastern Australia
- 9 Insect migration in an arid continent. III. The Australian Plague Locust Chortoicetes terminifera and the Native Budworm Helicoverpa punctigera in Western Australia
- Part two Adaptations for migration
- Part three Forecasting migrant pests
- Part four Overview and synthesis
- Index
Summary
Introduction
The Oriental Armyworm Mythimna separata is a serious pest of gramineous crops and pastures in Asia and New Zealand (Sharma & Davies, 1983). In Japan, outbreaks occur every few years, mainly along the western (Sea of Japan) coasts of Hokkaido and Honshu and in western Kyushu (Fig. 6.1). Outbreaks affecting 200 ha or more of crops occurred in eight of the 31 years 1958–1988: in I960,1971, 1972, 1978, 1981, 1982, 1984 and 1987. The most serious outbreaks (over 20 000 ha affected) were in 1960, 1971 and 1987 (Oku & Kobayashi, 1977; Hirai, 1988a). These outbreaks are of significant economic importance and some required large-scale insecticidal control.
Since 1941, insect pests of rice (especially planthoppers (Delphacidae) and leafhoppers (Deltocephalidae)) have been monitored in Japan with a nationally operated light-trap network. The network extends throughout the country, with four or five traps in each of the 46 prefectures. M. separata is caught in these traps, but only in small numbers: the incandescent lamps used do not attract this species efficiently. A smaller network of food-lure traps (containing a mixture of sake lees, water, brown sugar and vinegar in the ratios 13 : 32 : 5 : 1 by weight) has therefore also been set up specifically to monitor M. separata. It extends to just four prefectures: Hokkaido, Aomori and Akita in the north and Kagoshima in the south.
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- Insect MigrationTracking Resources through Space and Time, pp. 117 - 130Publisher: Cambridge University PressPrint publication year: 1995
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